What is the Sagittarius birthstone?

There isn't one settled answer. The traditional tropical zodiac (November 22 – December 21) names Topaz; the modern jewelry-trade convention names Tanzanite instead. Both are sourced, dated lists — see the comparison table above.

Why do the two zodiac birthstone lists disagree for Sagittarius?

Sagittarius's traditional stone, Topaz, comes from the historical November birthstone list — the month Sagittarius begins in. Its modern stone, Tanzanite, comes from the separate current monthly birthstone table instead. The disagreement between the two zodiac lists is really the historical list diverging from the modern one; each sign inherits that divergence from its date range.

What color is Tanzanite, Sagittarius's modern birthstone?

Tanzanite occurs in blue and purple tones, with a Mohs hardness of 6–7.

Is my Vedic sign the same as Sagittarius?

Not necessarily. The sidereal zodiac used in Vedic astrology runs roughly 23 days behind the tropical zodiac, so a birth date in tropical Sagittarius often falls under sidereal Scorpio instead. We have not sourced Vedic birthstone assignments, so this concerns the sign only, not a stone recommendation.

Do the two zodiac systems ever agree on a stone for Sagittarius?

No. Sagittarius' traditional tropical stone is topaz and its modern trade stone is tanzanite, so the two lists disagree here exactly as they do for every other sign. You will see it claimed that Sagittarius is the one sign where the two systems agree on topaz. That claim is wrong, and it is easy to see why it spreads: topaz genuinely does appear on both lists, but under different signs — traditional Sagittarius and modern-trade Scorpio. The two systems sit one sign apart, so a stone showing up on both lists is the expected result of that offset, not evidence of agreement.

Sagittarius Birthstones

Sagittarius doesn't have one settled birthstone. The traditional tropical zodiac assigns Topaz; the modern jewelry trade assignsTanzanite instead. Both are attested, dated conventions — not ancient absolutes — and the comparison and sourcing below show exactly where each one comes from.

Sagittarius at a glance

Date range: November 22 – December 21
Element: Fire
Modality: Mutable
Ruling planet: Jupiter
Polarity: Positive

Sagittarius birthstones by system

Both zodiac-birthstone systems for Sagittarius, side by side
Sign	Traditional tropical zodiacTraditional Western astrology	Modern jewellery-trade zodiacContemporary retail convention
Sagittarius	Topaz	Tanzanite

Traditional tropical zodiac: This list derives from the historical monthly birthstone table keyed to each sign's starting month, so it inherits that table's lack of a single standardising source.

Modern jewellery-trade zodiac: This is a contemporary retail convention mapping the current monthly list onto zodiac date ranges — a 20th/21st-century commercial construct, not an ancient astrological tradition.

The stones themselves

Topaz (traditional tropical zodiac)

Topaz is its own mineral species. Mohs hardness: 8. Color: Yellow, Blue, Brown, and Colourless. Natural "imperial" topaz (pink to orange-red) is rare; the great majority of blue topaz in jewelry is colorless topaz that has been irradiated and heat-treated.

Tanzanite (modern jewelry-trade zodiac)

Tanzanite is a variety of Zoisite. Mohs hardness: 6–7. Color: Blue and Purple. Tanzanite is the blue-to-violet gem variety of the mineral zoisite; it is found in gem quantity at only one place on Earth, the Merelani Hills near Mount Kilimanjaro in Tanzania.

Why Sagittarius has two different stones

Sagittarius begins in November. The historical November birthstone list named Topaz and Pearl, and Topaz is the entry that carried through into the traditional tropical-zodiac list for Sagittarius — the same stone, tied to the month the sign begins in.

The modern jewelry-trade list works differently: rather than drawing on the historical table, it draws on the current monthly birthstone table instead. Sagittarius ends in December, and its modern stone, Tanzanite, matches the current US birthstone table for December — the month that holds most of Sagittarius's date range.

Western vs. Vedic: which sign are you really?

The dates above use the tropical zodiac, the system Western astrology — and this page — is built on. The sidereal zodiac used in Vedic (Jyotish) astrology runs roughly 23 days behind it, because it tracks the actual position of the constellations rather than the seasons. If you were born under tropical Sagittarius (November 22 – December 21), your sidereal placement is often Scorpio instead — especially for birthdays in the first few weeks of the range. We have not sourced Vedic birthstone assignments for Scorpio or any other sign, so this is a note about the sign shift only, not a birthstone recommendation.

Sagittarius birthstone FAQ

What is the Sagittarius birthstone?: There isn't one settled answer. The traditional tropical zodiac (November 22 – December 21) names Topaz; the modern jewelry-trade convention names Tanzanite instead. Both are sourced, dated lists — see the comparison table above.
Why do the two zodiac birthstone lists disagree for Sagittarius?: Sagittarius's traditional stone, Topaz, comes from the historical November birthstone list — the month Sagittarius begins in. Its modern stone, Tanzanite, comes from the separate current monthly birthstone table instead. The disagreement between the two zodiac lists is really the historical list diverging from the modern one; each sign inherits that divergence from its date range.
What color is Tanzanite, Sagittarius's modern birthstone?: Tanzanite occurs in blue and purple tones, with a Mohs hardness of 6–7.
Is my Vedic sign the same as Sagittarius?: Not necessarily. The sidereal zodiac used in Vedic astrology runs roughly 23 days behind the tropical zodiac, so a birth date in tropical Sagittarius often falls under sidereal Scorpio instead. We have not sourced Vedic birthstone assignments, so this concerns the sign only, not a stone recommendation.
Do the two zodiac systems ever agree on a stone for Sagittarius?: No. Sagittarius' traditional tropical stone is topaz and its modern trade stone is tanzanite, so the two lists disagree here exactly as they do for every other sign. You will see it claimed that Sagittarius is the one sign where the two systems agree on topaz. That claim is wrong, and it is easy to see why it spreads: topaz genuinely does appear on both lists, but under different signs — traditional Sagittarius and modern-trade Scorpio. The two systems sit one sign apart, so a stone showing up on both lists is the expected result of that offset, not evidence of agreement.

Sources

Retrieved 2026-08-10.