Our English age tool shows Pearl for a June birthday. That is one display value, not an instruction to buy pearls. The American Gem Society’s June page gives three choices: pearl, alexandrite and moonstone.
Try a June birthday
Use June 15, 1988 as a fictional example in the English age tool. Its Birthstone card shows Pearl. The tool does not show the full June list on that card: Moonstone and Alexandrite remain options in the AGS list. The tool does not choose a gift for you.
- Confirm the month. Compare June with the linked AGS list; do not infer a gemstone from the zodiac sign.
- Keep all listed choices. A single card is not an official ranking. A different listed June stone is not a wrong result for the month.
- Ask the recipient. If they prefer moonstone, the tool’s Pearl label is not a reason to overrule that preference. This is an invented example, not a customer story.
- Check the actual item separately. A birthstone label does not establish a product’s material, treatments, quality or value. Read the seller’s description and ask about unclear claims before relying on it. Choosing no jewelry is also an option.
This is our suggested checking procedure, not a jewelry-industry rule. The month list does not tell us what a person wants.
The 1912 American birthstone list
The modern U.S. birthstone list was created in 1912 by the American National Retail Jewelers Association — now Jewelers of America (the American Gem Society is a separate trade group). The list has been revised three times since: in 1952 (four gemstones added), in 2002 (Tanzanite) and in 2016, when Jewelers of America and the American Gem Trade Association added Spinel. The table below follows the list the American Gem Society publishes today.
| Month | Tool display | Other listed stones | Color example |
|---|---|---|---|
| January | Garnet | — | Deep red |
| February | Amethyst | — | Purple |
| March | Aquamarine | Bloodstone | Pale blue |
| April | Diamond | — | Clear |
| May | Emerald | — | Green |
| June | Pearl | Moonstone, Alexandrite | White, multi |
| July | Ruby | — | Deep red |
| August | Peridot | Sardonyx, Spinel (added 2016) | Olive green |
| September | Sapphire | — | Blue |
| October | Opal | Tourmaline | Multi |
| November | Topaz | Citrine | Gold |
| December | Turquoise | Tanzanite (added 2002), Zircon | Blue-green |
The Tool display column matches our site’s representative value, not an official ranking. The other stones are not lesser choices. Color is only an example, not a promise about every stone or product. For the source list rather than our display layout, use the AGS month list.
Tanzanite was added to the December list in 2002 — only 35 years after its discovery in Tanzania in 1967. Spinel joined the August list in 2016. The list continues to evolve.
Western zodiac — Babylonian signs, not today’s sky
The 12 signs of the Western zodiac go back to Babylonian astronomers, who divided the zodiac into 12 equal parts to fit their 12-month calendar. The tropical zodiac divides the ecliptic into 12 equal 30-degree segments starting at the spring equinox. That convention is not the same as measuring a constellation.
The table below describes our tool, not a sky calculation. The tool uses fixed month/day ranges; it does not use birth time or location or calculate the Sun’s position. The Element and Ruling Planet columns are traditional labels stored in the tool, not measured properties of a person.
| Sign | Date Range | Element | Ruling Planet |
|---|---|---|---|
| Aries | March 21 – April 19 | Fire | Mars |
| Taurus | April 20 – May 20 | Earth | Venus |
| Gemini | May 21 – June 21 | Air | Mercury |
| Cancer | June 22 – July 22 | Water | Moon |
| Leo | July 23 – August 22 | Fire | Sun |
| Virgo | August 23 – September 22 | Earth | Mercury |
| Libra | September 23 – October 22 | Air | Venus |
| Scorpio | October 23 – November 21 | Water | Pluto |
| Sagittarius | November 22 – December 21 | Fire | Jupiter |
| Capricorn | December 22 – January 19 | Earth | Saturn |
| Aquarius | January 20 – February 18 | Air | Uranus |
| Pisces | February 19 – March 20 | Water | Neptune |
NASA explains Earth’s roughly 26,000-year axial precession. This is one reason astronomical positions need a reference epoch; it does not validate our fixed birthday ranges. The Sun passes through 13 constellations, including Ophiuchus, along its yearly apparent path. Do not read the table as the constellation behind the Sun at the moment you were born.
Birth-year animal — check the boundary first
Our English card repeats these twelve labels using the Gregorian birth year:
Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Goat, Monkey, Rooster, Dog, Pig
This is the site’s mapping, not a claim that every culture uses identical animals or the same new-year boundary. The card changes on January 1, not Lunar New Year. Confirm the convention with the person or family if the label is for a cultural occasion.
Try a date on each side of Lunar New Year
The Hong Kong Observatory’s 2026 table starts the first lunar month on February 17. Compare these fictional dates using the Gregorian date option in the English age tool:
| Gregorian birth date | Our January 1 card | Lunar New Year comparison |
|---|---|---|
| February 16, 2026 | Horse | Snake — still before the new lunar year |
| February 17, 2026 | Horse | Horse — first day of the new lunar year |
The tool should show Horse for both dates. That is its stated January 1 rule, not a lunar conversion error. If you need the lunar-year classification, the tool card alone is insufficient. This comparison does not cover every astrological or family convention.
For someone born 1988-03-12, the Chinese zodiac animal is Dragon — both under a January 1 boundary and under the traditional Lunar New Year boundary (the HKO 1988 table places the first lunar month on February 17).
Three labels, different inputs
| Label | Example for March 12, 1988 | What it uses |
|---|---|---|
| Birthstone | Aquamarine | The birth month and our representative display value |
| Western zodiac | Pisces | The article’s month-and-day convention |
| Birth-year animal | Dragon | The birth year; check the year boundary for January and February |
This is not a personality assessment. A gemstone name does not establish someone’s communication style, and this calculator does not test artistic ability, compatibility or future outcomes. We have removed the old invented character reading rather than presenting it as evidence about a real person.
The older article also made a claim about the absence of peer-reviewed evidence across these systems. We did not conduct a systematic literature review, so that blanket statement has been removed. The narrower point here is about this page: its date classifications and tool output are not evidence for judging a person’s character.
Tool — get all three cards from one birthday
The age tool takes a date of birth and shows the three “cards” together: birthstone, Western zodiac, and a birth-year animal (which uses a January 1 year boundary, not Lunar New Year). The Korean page shows the same three cards; the Japanese page shows the Chinese zodiac (eto) and Western zodiac but no birthstone card. Use the birthstone result as a starting point for checking a list, not as a complete selection or a purchase recommendation.
Correction (2026-10-12): We replaced the unsupported primary/secondary hierarchy with the distinction between our display value and the source list, added the June checking example, and removed invented personality readings and old card images. The existing history and calendar sections were not fully reverified in this update.
Media update scope (2026-10-10): The older embedded player was withdrawn because a separate review against the current text was not verified. This does not establish that the video was factually wrong. This update checks only the embed withdrawal; the article source review remains dated 2026-09-28, not a fresh validation of every claim.
October 13 scope: The fixed-date and year-boundary explanations, the two fictional February dates and the linked HKO/NASA checks were reviewed. The unsupported sixth-century origin and all-culture animal-list generalization were removed. This is not a new review of every birthstone-history claim or an expert cultural/astronomical assessment.