What is the Aries birthstone?

There isn't one settled answer. The traditional tropical zodiac (March 21 – April 19) names Bloodstone; the modern jewelry-trade convention names Diamond instead. Both are sourced, dated lists — see the comparison table above.

Why do the two zodiac birthstone lists disagree for Aries?

Aries's traditional stone, Bloodstone, comes from the historical March birthstone list — the month Aries begins in. Its modern stone, Diamond, 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 Diamond, Aries's modern birthstone?

Diamond occurs in colourless tones, with a Mohs hardness of 10.

Is my Vedic sign the same as Aries?

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

Why is Aries' traditional stone bloodstone but its modern stone diamond?

Bloodstone comes from the historical March list Aries inherits by starting in late March. Diamond comes from the current US trade list for April, the month that holds most of Aries' date range (March 21 – April 19). The two lists draw on different sources — an old regional custom versus a 20th-century retail standard — so Aries lands on very different stones in each.

Aries Birthstones

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

Aries at a glance

Date range: March 21 – April 19
Element: Fire
Modality: Cardinal
Ruling planet: Mars
Polarity: Positive

Aries birthstones by system

Both zodiac-birthstone systems for Aries, side by side
Sign	Traditional tropical zodiacTraditional Western astrology	Modern jewellery-trade zodiacContemporary retail convention
Aries	Bloodstone	Diamond

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

Bloodstone (traditional tropical zodiac)

Bloodstone is a variety of Chalcedony. Mohs hardness: 6.5–7. Color: Green and Multicolour. Bloodstone is a green chalcedony (sometimes classed as jasper) flecked with red iron-oxide inclusions; it is also called heliotrope.

Diamond (modern jewelry-trade zodiac)

Diamond is its own mineral species. Mohs hardness: 10. Color: Colourless.

Why Aries has two different stones

Aries begins in March. The historical March birthstone list named Bloodstone and Jasper, and Bloodstone is the entry that carried through into the traditional tropical-zodiac list for Aries — 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. Aries ends in April, and its modern stone, Diamond, matches the current US birthstone table for April — the month that holds most of Aries'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 Aries (March 21 – April 19), your sidereal placement is often Pisces instead — especially for birthdays in the first few weeks of the range. We have not sourced Vedic birthstone assignments for Pisces or any other sign, so this is a note about the sign shift only, not a birthstone recommendation.

Aries birthstone FAQ

What is the Aries birthstone?: There isn't one settled answer. The traditional tropical zodiac (March 21 – April 19) names Bloodstone; the modern jewelry-trade convention names Diamond instead. Both are sourced, dated lists — see the comparison table above.
Why do the two zodiac birthstone lists disagree for Aries?: Aries's traditional stone, Bloodstone, comes from the historical March birthstone list — the month Aries begins in. Its modern stone, Diamond, 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 Diamond, Aries's modern birthstone?: Diamond occurs in colourless tones, with a Mohs hardness of 10.
Is my Vedic sign the same as Aries?: Not necessarily. The sidereal zodiac used in Vedic astrology runs roughly 23 days behind the tropical zodiac, so a birth date in tropical Aries often falls under sidereal Pisces instead. We have not sourced Vedic birthstone assignments, so this concerns the sign only, not a stone recommendation.
Why is Aries' traditional stone bloodstone but its modern stone diamond?: Bloodstone comes from the historical March list Aries inherits by starting in late March. Diamond comes from the current US trade list for April, the month that holds most of Aries' date range (March 21 – April 19). The two lists draw on different sources — an old regional custom versus a 20th-century retail standard — so Aries lands on very different stones in each.

Sources

Retrieved 2026-08-10.