Marking a moment of your own by the month you were born. Birthstones & Birth Months is an intention theme in the Cosmos & Symbols group.
Answer at a glance
The birthstone lists differ from country to country. The American one comes from Jewelers of America and goes back to 1912. The British one, from the National Association of Jewellers, is arranged by star sign and gives two stones for each month, one traditional and one alternative.
The Japanese one comes from the Japan Jewellery Association, which gives 20 December 2021 as its revision date. This theme is about marking a month that matters to you; the three lists are compared on the culture page.
Scope
Not a claim about the wearer or their month. Birthstone rosters are maintained separately by trade associations in different countries and they disagree; we show the differences rather than picking one and calling it the standard.
Marking a moment of your own by the month you were born.
Wearing the stone for your birth month is a way of holding on to a particular stretch of time: the month you were born, or a month that came to mean something later. Which stone that is comes down to convention, not to mineralogy and not to law.
What it does not represent
Not a claim about the wearer or their month. Birthstone rosters are maintained separately by trade associations in different countries and they disagree; we show the differences rather than picking one and calling it the standard.
This site promises no healing, no efficacy, and no health or financial outcome. An intention is the meaning a wearer gives a piece, not something the object does.
Three trade bodies — in the United States, the United Kingdom and Japan — each publish their own birthstone list. Where they disagree the pages set them side by side; none of them is treated as the single standard.
Questions to reflect on
What happened in this month that I want to keep?
Whose birthday am I really marking?
Checked material associations
No checked material association has been published for this theme yet.
Cultural record
These reviewed links connect this theme with a page in the LumaLark culture section. Each link records a documented historical, symbolic, industry or practice context; it does not mean this theme causes, requires, or is endorsed by that historical or cultural practice.
Jewelers of America, “Birthstone Jewelry” (web page, consulted 2026-08-22) — Jewelers of America page, body text: “the official birthstone list dates back to 1912”
National Association of Jewellers, “Zodiac Birthstones Jewellery: Star Signs, Gemstones and Their Meaning” (web page, consulted 2026-08-22) — National Association of Jewellers page, Zodiac birthstone chart
Editorial note
Birthstone-by-month rosters differ by region: the U.S. list traces to 1912 (Jewelers of America), the U.K. National Association of Jewellers publishes its own chart by star sign, and Japan's roster was revised in 2021 to add stones the American and British lists do not carry.