March Birthstone: Aquamarine Meaning, Color & History

Aquamarine illustration

March is the rare month where the birthstone names double as ingredient labels. Aquamarine comes straight from the Latin for “seawater,” a fittingly literal name for a stone the color of shallow ocean. Bloodstone earned its name from red iron-oxide spots scattered through dark green chalcedony, dramatic looking but mineral, not gore. Two very different stones, two literal names, and one real decision in front of you: a clear blue jewel or an opaque, storied cabochon?

March at a glance

• Birthstones: aquamarine and bloodstone
• Aquamarine: pale to deeper green-blue beryl; 7.5–8 Mohs
• Bloodstone: dark-green chalcedony with red iron-oxide inclusions; 6.5–7 Mohs
• Wearability: aquamarine is the stronger daily-wear candidate; bloodstone works especially well in protected or lower-impact jewelry
• Price direction: the two materials occupy different markets, so compare like with like rather than assuming one March stone has one price

Two stones, two completely different looks

Aquamarine lives up to its name, running from deep green-blue to a light, slightly greenish blue, and faceted stones are usually eye-clean, meaning you won’t spot inclusions without magnification. It’s a beryl, the same mineral family as emerald, though its pale, watery color gives it an entirely different personality and, happily, none of emerald’s usual fuss over hidden fractures. At 7.5 to 8 on the Mohs scale, it’s tough enough for a ring you’ll actually wear.

Bloodstone, sometimes called heliotrope, is a different animal altogether: a semi-translucent to opaque, jasper-like variety of chalcedony, dark green and speckled with red inclusions of iron oxide, usually hematite. Rather than being faceted, it’s almost always cut as a smooth cabochon, which turns those red flecks into part of the design instead of a flaw to hide. The best material shows a deep forest green with spots that look evenly scattered and intentional, not like random damage.

Caring for each one

Aquamarine handles daily wear well, but a soft brush, warm water, and a little mild soap is still the easiest default cleaning routine. Ultrasonic and steam cleaning are usually fine too, as long as the stone has no visible fractures or liquid inclusions, so check with your jeweler first if yours does.

Bloodstone asks for a gentler touch. Its 6.5 to 7 hardness sits close to ordinary household dust, which can abrade the surface over time, so warm soapy water and a soft brush, followed by a soft-cloth dry, is the safer routine. Keep it away from harsh chemicals and extreme heat, and store both March stones apart from harder gems like diamond, ruby, and sapphire that could scratch them.

Comparing cost the right way

Don’t expect one “March birthstone” price. For aquamarine, color, transparency, size, and cut quality drive value. Bloodstone is judged on its green body color and how well-distributed and vivid its red markings are. The real first decision is which look you’re even after, a translucent blue faceted jewel or an earthy cabochon, and only then does it make sense to compare quality within that category.

Why March, and the stories behind the names

Both stones sit on March’s spot in the modern Western birthstone list, a jewelry-trade convention rather than a scientific rule, so a March 3 birthday and a March 29 birthday get the identical pairing. It’s also unrelated to the date ranges used in Western zodiac traditions. If you want to see how the rest of the year shakes out, the birthstones hub covers every month, and the birthday calculator has more on your specific date.

Bloodstone’s older name, heliotrope, comes from Greek words tied to the sun and turning, and old folklore linked its red spots to blood itself. The real explanation is simpler: iron-oxide inclusions in green chalcedony. Aquamarine is often heat treated to tone down a yellowish tint and push the color toward a purer blue, a stable and common treatment that should still be disclosed. A paler aquamarine isn’t a lesser one, either; that lightness can be exactly what makes a large pendant feel airy rather than heavy.

Making the choice, then the comparison

Go with aquamarine if you want a transparent, faceted stone with a cool blue look that can handle frequent wear, though a protective setting is still smart for a ring. Go with bloodstone if an opaque, graphic surface appeals to you, especially in the signet-ring tradition, or in carved and cabochon designs; it’s often striking in a pendant, cufflinks, or a ring with a recessed stone.

For aquamarine, look closely at color, cut, and transparency, and check whether a pale center looks washed out rather than luminous. For bloodstone, check the polish, the depth of the green, and how the red inclusions sit across the surface. Ask whether the aquamarine has been heated and whether the bloodstone carries any dyeing or stabilization disclosure. Neither answer crowns one stone “better,” it just tells you what you’re actually buying, and it’s the kind of detail that makes March’s two-stone tradition feel like an opportunity rather than a complication.