On this page
UnderstandWhat it is, what people ask, how far this page goes
Natural inorganic gem materials · Trade name: inclusion / visual-effect descriptor · Natural identity; treatment status unknown
Multi-inclusion Quartz
Also known asMelody Stone · Super Seven
Quartz containing several visually distinguishable kinds of inclusions, sold under the non-standard trade name Super Seven; the name does not prove a fixed mineral combination. This page compares how the major standards and institutions name it, what must be disclosed when selling it, whether it can be worn every day, how it is treated and identified, and which source each conclusion comes from.
Price, rarity and origin are outside the scope of this wiki.
What this page can answer
This page covers
- How Multi-inclusion Quartz forms and what gives its colourFormation setting, process and timescale, each finding graded and sourced
- How to identify Multi-inclusion QuartzIdentification points from the research literature
- Treatments and enhancements of Multi-inclusion QuartzThe enhancements and treatments the GB/T and JJA/AGL tables list
- Hardness, density and refractive index of Multi-inclusion QuartzEach value with its source and check date
- Multi-inclusion Quartz in English, Chinese and Japanese; national standard namesNames in four languages, the GB/T standard name and the suggested listing name; and: Has any of GIA, FTC, CIBJO or Gem-A put a name for it on record here?
- Listing and disclosing Multi-inclusion QuartzThe listing name to use; what must be disclosed before sale
What we cannot conclude
- Whether one particular bead is natural, treated or synthetic — only a laboratory report can settle that.
- Geographic origin, unless an origin report accompanies the item.
- Price, rarity or investment value: this wiki covers naming and disclosure only.
Material research: formation, causes and history
What authoritative sources say about how this material forms, what causes its colour and optical effects, where its name comes from and how people have used it. Each statement carries an evidence grade and its sources; it describes the material in general, not any specific piece.
How it forms
Super-seven quartz is a collective trade name for quartz with visually diverse inclusions, marketed as containing several mineral inclusions 'at once'. Its host is still quartz (SiO2): the quartz grows from silica-bearing fluids in open cavities and can trap a variety of mineral or fluid inclusions during growth (e.g., hematite, pyrite, chalcopyrite, and multi-component fluids). Because quartz can genuinely host several inclusion types at once, a 'multi-inclusion' look is not unusual; but 'super seven' is not a mineralogical classification, and its claimed inclusion set and count are undefined in the available authoritative sources, requiring case-by-case testing.
Scope: Used to explain that quartz can contain several kinds of inclusions at once, and the boundary of 'Super Seven' as a non-standard collective trade name; no determination is made of the specific inclusion combinations claimed for it.
Sources G&G Spring 2023 · G&G Fall 2024
Where it forms
Open cavities or vein pockets where quartz grows from silica-bearing fluids and can host multiple inclusion types.
Sources G&G Fall 2024
Silica-bearing hydrothermal system: inclusions are trapped during growth.
Sources G&G Fall 2024
How it forms, step by step
Silica-bearing fluids feed quartz growth in an open cavity.
During growth, different mineral and fluid inclusions are captured by the growth faces.
Several inclusion types coexist in one quartz crystal, producing a diverse internal appearance.
The inclusion set and count claimed for 'super seven' must be confirmed by testing each sample.
Link to appearance
Quartz contains multiple inclusion types of varied colour and habit (e.g., hematite, pyrite, chalcopyrite), giving a multi-inclusion appearance; appearance cannot prove the species or the 'seven' claim.
Sources G&G Spring 2023 · G&G Fall 2024
Timescale
No growth duration or absolute age is given, and no geological data specific to this trade name is available.
Sources G&G Spring 2023 · G&G Fall 2024
Related base materials
- Quartz (SiO2): inclusion-bearing-quartz-of | This type of material is quartz containing inclusions, attached to the mineral species quartz, not an independent mineral species
Supporting findings
The inclusions of super-seven quartz are trapped during quartz growth, aligned along growth layers and the growth direction.
Evidence grade AScope: Concerns the generic trapping mechanism; does not assert inclusion type or count.
How it is identified
The colour and inclusion appearance of 'super-seven-quartz' cannot establish whether a stone is natural, synthetic or treated: quartz varieties that look alike may differ entirely in composition, growth history and treatment, and synthetic and natural quartz share essentially the same composition and physical properties, so the unaided eye cannot separate them. Laboratory identification rests on measurable properties and the division of labour between instruments — a polariscope with a conoscope lens can judge colour-zoning orientation from extinction and optic-axis readings, a refractometer gives refractive-index values, and EDXRF with infrared spectroscopy supplies chemical and structural fingerprints. Limitations: some methods depend on how the stone was cut and on comparison with reference material, and the final conclusion must be issued by an accredited gemological laboratory through testing rather than inferred from appearance.
Evidence grade AScope: Identification and separation points; testing must be performed by an accredited gemological laboratory, and no self-test thresholds are given.
Sources G&G Summer 2014 · CIBJO Gemstone Book 2022
Other research findings
Quartz can host several mineral inclusion types at the same time (e.g., hematite, pyrite, chalcopyrite).
Evidence grade AScope: An example of quartz inclusion diversity; makes no specific claim about a 'super seven' sample's inclusions.
'Super seven quartz' is a collective trade name, not a mineralogical classification; its claimed inclusion set and count are undefined in the available authoritative sources.
Evidence grade CScope: A naming-boundary judgement; sources do not define this trade name.
Inclusions in quartz can be multi-component (e.g., petroleum, methane, asphaltite and water), so a varied appearance need not correspond to several distinct minerals.
Evidence grade AScope: An example of quartz fluid-inclusion composition; makes no specific determination for 'super seven'.
Limits of this research
- Research status: Formation, occurrence or other material-specific findings found in authoritative sources
- 'Super seven quartz' is a non-standard collective trade name; the claimed inclusion set and count are unsupported by authoritative sources, hence claims rated C.
- No growth duration or absolute age; not a single mineral species.
Methodology
- Origin determination and its limits
- Quality grading and value factors
- How gemmology became a technical discipline
Evidence grades
- A
- Standards bodies, government geological surveys, peer-reviewed research and museum records
- B
- Institutional educational material
- C
- Specialist databases or cautious readings
A statement is never graded above its strongest source.
This section is LumaLark's own factual restatement of public authoritative sources, credited item by item; it contains no verbatim excerpts, images or third-party logos.
DecideListing name, disclosure, care and treatments
- Suggested listing name
- Quartz sold as Super Seven (trade name; state the inclusions actually identified)
GB/T 16552—2017 5.1.1 c)
Construction or treatment status
Natural identity; treatment status unknown
Treatments recorded for this material: Heated / Heat-treated (via parent material), Irradiated (via parent material), Filled / Fracture-filled (via parent material), Dyed (via parent material), Coated (via parent material)
Related:Disclosure and cautions
This page cannot answer
Natural? · Origin · Price
A lab report settles these; this wiki covers naming and disclosure.
Related:What this page can answer
Answer at a glance
"Multi-inclusion Quartz (trade name: Super Seven)" is a market name rather than a mineral species name; before using it, verify: Trade name rather than a mineralogical species name.
What this means for you
Before buying, check the recommended listing name "Quartz sold as Super Seven (trade name; state the inclusions actually identified)" and any disclosed treatments on this page, and ask the seller for a grading report if in doubt.
Known uncertainty
- This entry's exact material identity is not fully settled.
- See “Disclosure and cautions” above
- Last reviewed
- 2026-09-01
Trade-name ruling
- Trade name rather than a mineralogical species name.
- Suggested listing name
- Quartz sold as Super Seven (trade name; state the inclusions actually identified)
Care and wear
No care facts are recorded for this entry itself. Its parent material has care records: see Quartz.
Treatments and identification leads
One row per treatment, with three standards side by side: how often it occurs and how stable it is (CIBJO), its category in GB/T 16552—2017 Table B.1 (this site's paraphrase) and how the JJA/AGL 2025 table lists it. Each CIBJO value links to its entry under “Testing and market”, where the wording and source are given in full.
This table scrolls sideways on narrow screens.
| Treatment | Market frequency (CIBJO) | Stability (CIBJO) | GB/T 16552 category | JJA/AGL listing | Identification leads |
|---|---|---|---|---|---|
| Heating | — | — | Optimization | — | — |
| Irradiation | — | — | Optimization | — | — |
| Filling | — | — | Graded — see §5.4.1, Table 1 | — | — |
| Dyeing | — | — | Treatment | — | — |
| Coating | — | — | Treatment | — | — |
“—” means the cited source gives no value for that item, not “none”. Source: GB/T 16552—2017 Table B.1 (row for Rock Crystal)
Whether a treatment has to show in the name differs between the two rule sets (this site’s paraphrase):
- GB/T 16552—2017: a method classed as treatment has to be stated in the name itself — the method put before the name, or added in brackets after it; a method classed as optimization does not need to appear in the name, though one marked “Optimization (annotation required)” still has to be noted in the quality documents. Source: §5.4.2.1 a), b); §5.4.2.2 a)
- CIBJO Gemstone Book 2022: no longer splits treatments into ones that need specific disclosure and ones that need only general disclosure: every treatment is to be disclosed, and the seller tells the buyer which treatment was used and what special care it calls for. Source: §4.2.5 Note 2, §4.2.5.1, pp.14–15
VerifyNames, standards, technical facts, clauses and sources
Names
Besides Multi-inclusion Quartz, the name register records "Melody Stone" and "Super Seven", for which no restriction on use as a name is recorded; 4 further names in non-Latin scripts are listed in the name register below (4 with no restriction recorded on use as a name).
Standard and listing namesThe national-standard name corresponding to Multi-inclusion Quartz is rock crystal (GB/T 16552—2017), and the name itself is not listed in the original; the suggested listing name is Multi-inclusion Quartz (trade name; state the inclusions actually identified). Trade and mineralogical namesTrade names/synonyms include Super Seven, Melody Stone, black-gold Super Seven, purple Super Seven, red Super Seven and Super Seven purple rutilated quartz, all registered as market names on the basis of a ruling by this site with no clause attached; the related high-risk names are Super Seven, Lemurian and Azeztulite. Names in four languagesNames are given in four languages: the Simplified Chinese and Traditional Chinese names are the same, the English is Multi-inclusion Quartz, and the entry's own Japanese name means quartz with multiple inclusions (trade name: Super Seven); Japan's GSJ wording for it is not yet verified by this site. Institution usageOn authority wording, the FTC and CIBJO texts on file have no wording for this name (checked), and GIA and Gem-A are unchecked; the qualifier stripped from the title name is trade name Super Seven, which comes from the entry's own English name; GIA and Gem-A wording is unchecked, and the FTC and CIBJO texts on file have no wording for this name (checked). Bodies without a recorded wording show the entry's own English name, which does not represent their position.
Name register
Every name recorded for this entry, with how it is classified, whether it may be matched to this entry automatically, whether it may be used as a product name, and the clause it rests on.
This table scrolls sideways on narrow screens.
| Name | Type | Matching | Use as a name | Basis |
|---|---|---|---|---|
| no restriction recorded (6) | ||||
| Melody StoneEnglish | market name | matched automatically | no restriction recorded | editorial ruling (no clause cited); Note: Related high-risk name “Super Seven, Lemurian, Azeztulite”. |
| Super SevenEnglish | market name | matched automatically | no restriction recorded | editorial ruling (no clause cited); Note: Related high-risk name “Super Seven, Lemurian, Azeztulite”. |
| 紫超七Simplified Chinese | market name | matched automatically | no restriction recorded | editorial ruling (no clause cited); Note: Related high-risk name “Super Seven, Lemurian, Azeztulite”. |
| 红超七Simplified Chinese | market name | matched automatically | no restriction recorded | editorial ruling (no clause cited); Note: Related high-risk name “Super Seven, Lemurian, Azeztulite”. |
| 超七紫发晶Simplified Chinese | market name | matched automatically | no restriction recorded | editorial ruling (no clause cited); Note: Related high-risk name “Super Seven, Lemurian, Azeztulite”. |
| 黑金超七Simplified Chinese | market name | matched automatically | no restriction recorded | editorial ruling (no clause cited); Note: Related high-risk name “Super Seven, Lemurian, Azeztulite”. |
How each authority words this name: see Names › Authority wording.
- GSJ (Japan) formal name
- 複数包有物入りクォーツ（商業名：スーパーセブン） (not yet checked for this body — the entry's own Japanese name is shown)
- GB/T naming counterpart (this name is not in the standard)
- 水晶 (GB/T 16552—2017 §5.1.1 c))
- Mineralogical name
- Quartz with visually diverse inclusions sold under a non-standard trade name
- Trade names and synonyms
- Super Seven (market name) · Melody Stone (market name)
Four-language names
- 简体中文
- 超七水晶
- 繁體中文
- 超七水晶
- English
- Multi-inclusion Quartz (trade name: Super Seven)
- 日本語
- 複数包有物入りクォーツ（商業名：スーパーセブン）
Qualifiers stripped from the headline name
See also: Misleading and prohibited trade names · Supplementary name index
Classification
- Origin
- Natural materials
- Material domain
- Natural inorganic gem materials
- Browsing family
- Quartz and chalcedony materials
- Identity tier
- Trade name: inclusion / visual-effect descriptor
- Mineral chemical class
- Silicates
- Construction or treatment status
- Natural identity; treatment status unknown
Treatments listed by standards
Multi-inclusion Quartz is classified under the “Rock crystal” row of GB/T 16552—2017 Annex B, Table B.1: heating is listed as optimization, irradiation as optimization, filling is defined by grade, dyeing is listed as treatment and coating as treatment. The notes to Table B.1 and the definitions of the filling grades are on the Gem treatments page.
GB/T 16552-2017, Annex B, Table B.1
Under the “Rock Crystal” row of Table B.1: Heating Optimization; Irradiation Optimization; Filling Graded — see §5.4.1, Table 1; Dyeing Treatment; Coating Treatment. The full row, with the effect column, is on the Rock Crystal page.
What Table B.1 is, and how the “see 5.4.1” grades are defined: see the GB/T 16552: optimization vs treatment page.
What it is and how it's identified
All registered material facts for Multi-inclusion Quartz are written in the cited clause for "rock crystal (the whole class)", not measured on Multi-inclusion Quartz alone; for chemical composition, luminescence, UV-visible spectrum, infrared spectrum and magnification, see the Rock Crystal entry. Registered for rock crystal (the whole class): structure crystalline, trigonal, with hexagonal prismatic crystals showing pronounced horizontal striations on the prism faces; Mohs hardness 7, cleavage none; density 2.64–2.69 g/cm³, derived from the cited clause value 2.66 and its permitted tolerance (+0.03, −0.02). Registered for rock crystal (the whole class): refractive index 1.544–1.553, birefringence 0.009, optical character anisotropic, uniaxial, positive, and a "bull's-eye" interference figure may appear; pleochroism weak and varying with colour (treatment status: untreated), lustre vitreous (treatment status: untreated); among optical effects, the cat's-eye effect can occur, and asterism can occur as six-rayed stars, mostly seen in rose quartz.
Registered material facts
Each row carries its own source and check date and can be cited on its own; “—” means the cited source gives no value, not “none”.
Chemical composition, luminescence, UV-visible spectrum, infrared spectrum, magnification: these whole-class features are given in the cited clause for rock crystal (the whole class), so they are not repeated on the Multi-inclusion Quartz page; see the material facts on the Rock Crystal entry.
Items below that name the class they cover give the cited clause’s value for that whole class, not a measurement of Multi-inclusion Quartz (how to read class-level values).
Structure
Quartz sold as Super Seven — structure (overall): crystalline
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- rock crystal (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.16 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Quartz sold as Super Seven — structure (crystal system): trigonal
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- rock crystal (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.16 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Quartz sold as Super Seven — structure (crystal habit): hexagonal prisms with prominent horizontal striations on the prism faces
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- rock crystal (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.16 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Durability
Quartz sold as Super Seven — Mohs hardness: 7
GB/T 16553—2017
Reference points on this site: Talc 1–3, Fluorite 4, Apatite 5–5.5, Orthoclase 6–6.5, Topaz 8, Diamond 10 (Source: GB/T 16553—2017); Gypsum 1.5–2, Calcite 3, Quartz 7 (Source: Handbook of Mineralogy); Corundum 9 (Source: GIA Gem Encyclopedia (care guide))
- Does this standard apply
- applies to this entry
- What this covers
- rock crystal (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.16 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Quartz sold as Super Seven — cleavage: none
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- rock crystal (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.16 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Physical properties
Quartz sold as Super Seven — density: 2.64–2.69 g/cm³
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- rock crystal (the whole class)
- Qualification
The clause we cite gives 2.66, with a stated tolerance of +0.03 / -0.02. The range shown here is worked out from that.
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.16 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Optical
Quartz sold as Super Seven — optic character: anisotropic material, uniaxial, with positive optic character; a “Bull's eye” interference figure may be present, and Brazil-law twinning is common in amethyst.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- rock crystal (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.16 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Quartz sold as Super Seven — refractive index: 1.544–1.553
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- rock crystal (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.16 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Quartz sold as Super Seven — birefringence: 0.009
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- rock crystal (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.16 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Quartz sold as Super Seven — pleochroism: weak; it depends on the body colour.
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- rock crystal (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.16 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Quartz sold as Super Seven — optical effect (chatoyancy): seen
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- rock crystal (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.16 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Quartz sold as Super Seven — optical effect (asterism): seen; a six-rayed star, common in rose quartz.
GB/T 16553—2017
- Does this standard apply
- applies to this entry
- What this covers
- rock crystal (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.16 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
- CIBJO definitions
- chatoyancy, asterism
Quality factors
Quartz sold as Super Seven — quality factor (lustre): vitreous
GB/T 16553—2017
- Treatment state
- untreated
- Does this standard apply
- applies to this entry
- What this covers
- rock crystal (the whole class)
Source & check 2026-09-26
- Source
- GB/T 16553—2017 Gems — Testing (GB/T): §5.1.16 (locator checked 2026-09-26)
- Fact checked on
- 2026-09-26
Each row's “Source & check” expands to the full source; the date beside it is the fact check date.
This material (RI / SG midpoints): 1.548 / 2.67; Closest values: 1Agate 1.537 / 2.63, 2Shoushan Stone 1.56 / 2.7, 3Changhua Stone 1.56 / 2.6, 4Bamboo Coral 1.57 / 2.65, 5Synthetic Beryl 1.57 / 2.69
Show the full chart (330 registered materials)
Outside the full chart's range, drawn as triangles at the edge (RI / SG midpoints): Hematite 3.045/5.12, Synthetic Rutile 2.76/4.26, Rutile 2.753/4.23, Synthetic Moissanite 2.67/3.22
Evidence and sources
Authority basis and clause sources
Sources
Further reading
Related entries and topic cluster
Parent entry and related pages on this site. Rows marked “Planned” are suggested new content and have no link yet.
Related-entry tree for Quartz on this site: 74 entries listed by this site's parent-entry links; synthetic, treated and similar entries carry their recorded state after the name; this page (Multi-inclusion Quartz) is marked.
- Quartz
Sub-entries (57)
- Agate
Sub-entries (1)
- Amethyst
- Ametrine
- Aventurine Quartz
- Aventurine Quartz / Green Aventurine
- Banded Agate
- Black Agate
- Bloodstone / Heliotrope
- Blue Lace Agate
- Carnelian
- Chalcedony
Sub-entries (2)
- Chrysoprase
- Citrine
- Clear Quartz / Rock Crystal
- Coated Quartz
- Colourless to White Quartz (brand name: Azeztulite)
- Crazy Lace Agate
- Dendritic Agate
- Dyed Agate (Treated: dyed)
- Elestial Quartz / Skeletal Quartz
- Eye Agate
- Flower Agate / Cherry Blossom Agate
- Green Quartz
- High-clarity quartz with golden needle-like inclusions
- Included Quartz
- Jasper
Sub-entries (1)
- Madeira Citrine
- Malachite Agate
- Morion / very dark Smoky Quartz
- Moss Agate
- Moss Chalcedony
- Multi-inclusion Quartz
- Onyx (banded chalcedony)
- Phantom Quartz
- Prase
- Prasiolite / Green Quartz
- Quartz Cat’s-eye
- Quartz claimed to be from the Himalayas
- Quartz Crystal
- Quartz with dark needle-like inclusions
- Quartz with fine fibrous inclusions
- Quartz with flower-like inclusions
- Quartz with golden needle-like inclusions
- Quartz with green needle-like inclusions
- Quartzite Jade
- Quartzose Jade
- Red Agate
- Rock Crystal
- Rose Quartz
- Rutilated Quartz
- Sard
- Sardonyx
- Silicified Asbestos
Sub-entries (2)
- Hawk’s Eye
- Tiger’s Eye
Sub-entries (1)
- Smoky Quartz
- Smoky Quartz (brown variety)
- Strawberry Quartz
- Yellow-green Quartz
- Agate
This table scrolls sideways on narrow screens.
| Page | Content | Status |
|---|---|---|
| Browsing family | Quartz and chalcedony materials | Live |
| Treatments recorded for this material | Heated / Heat-treated (via parent material), Irradiated (via parent material), Filled / Fracture-filled (via parent material), Dyed (via parent material), Coated (via parent material) | Live |
| Related articles | To be added (placeholder) | Planned |
Who maintains this page
The material facts in the Multi-inclusion Quartz entry are maintained by the LumaLark wiki and matched one by one to the standard clauses or institutional sources they cite: every fact carries its source (with a clause or page locator) and a check date, so it can be traced back to the original. The entry exists so that buyers and sellers can check naming, disclosure and material facts item by item.