Bloodstone: The Ancient March Birthstone with a History as Bold as Its Appearance

A gemstone curator's guide to the bold, ancient stone that was March's original birthstone, and why collectors still seek it today.

If you were born in March, you probably grew up hearing that aquamarine is your birthstone. That beautiful blue-green gem gets all the attention now, but it was not always the star of the show. Before 1952, March belonged to bloodstone, a dark green chalcedony marked with vivid red spots that look like drops of blood on stone. It is one of the most visually dramatic gemstones in the world, and it carries one of the most powerful backstories in all of gemstone history.

I have handled bloodstone at gem shows from Tucson to Jaipur, and every time I pick up a fine specimen, I am reminded of why this stone has captivated people for thousands of years. The deep forest green contrasted with those unmistakable crimson flecks creates something that no other gemstone can replicate. There is a weight to it, both literally and figuratively, that draws you in.

Whether you are a March baby looking to explore your traditional birthstone, a collector who appreciates gemstones with real history, or simply someone who has seen bloodstone and wondered about its story, this guide will give you everything you need to know.

History and Legend

Few gemstones carry as much legend and symbolism as bloodstone. Its history stretches back thousands of years, and the stories attached to it are some of the most vivid in the gemstone world.

The most well-known legend comes from medieval Christianity. According to the tradition, when Christ was crucified, drops of his blood fell onto a piece of green jasper at the foot of the cross. The stone was forever marked with red, and it became a sacred object. This story gave bloodstone a revered place in medieval religious art. You can find it carved into crucifixion scenes, altar decorations, and church seals throughout Europe. For centuries, it was considered one of the most holy of all gemstones.

But bloodstone's history predates Christianity by a long stretch. Ancient warriors carried it as a talisman, believing it could stop bleeding from wounds and grant courage in battle. Soldiers would sometimes place bloodstone directly on injuries, trusting the gem's power to heal.

The ancient Greeks had their own name for it: heliotrope, which translates to "sun-turner." They believed that if you placed a bloodstone in water, it could turn the sun red. That might sound fanciful today, but it tells you something about how seriously the ancient world regarded this stone. It was not just decorative. It was considered genuinely powerful.

Bloodstone was also one of the earliest gemstones used for carved seals and signet rings. Its dense, fine-grained structure made it ideal for detailed engraving, and its dark color provided an authoritative backdrop for family crests and official marks. If you had an important document to seal in ancient Rome, there is a good chance you were pressing a bloodstone signet into the wax.

What Is Bloodstone, Exactly?

Let me clear up the mineralogy, because bloodstone's identity gets muddled in some descriptions you will find online.

Bloodstone is a variety of chalcedony, which is a form of cryptocrystalline quartz. That means its crystal structure is so fine-grained that you cannot see individual crystals, even under a standard microscope. The result is a smooth, dense stone with a waxy luster that takes a beautiful polish.

The dark green base color comes from chlorite or hornblende inclusions within the chalcedony matrix. Those distinctive red spots are caused by iron oxide, specifically hematite, dispersed through the stone. When you hold a fine bloodstone up to the light, you can sometimes see the way the red inclusions sit within the green like tiny suspended droplets.

You will sometimes hear bloodstone called "blood jasper," but this is technically inaccurate. While jasper is also a form of cryptocrystalline quartz, it has a different internal structure and opacity. Bloodstone is properly classified as chalcedony, though the boundary between chalcedony and jasper can be blurry in the real world. Gemologists generally classify it as chalcedony based on its translucency and texture.

There are two main varieties to know about:

• Classic bloodstone (heliotrope): Dark green base with distinct red spots. This is what most people picture when they hear "bloodstone," and it is the most sought-after variety.
• Plasma: Solid dark green without the red spots. Plasma is attractive in its own right, but it lacks the dramatic contrast that gives classic bloodstone its character and value.

Where Bloodstone Comes From

India has been the primary source of fine bloodstone for centuries, particularly the Deccan region. Indian bloodstone has set the standard for what collectors and jewelers expect in terms of color, spot distribution, and overall quality. When someone in the trade talks about "classic bloodstone," they are almost always referring to Indian material.

Other notable sources include Brazil, which produces some excellent specimens with strong color contrast. Australia yields bloodstone with distinctive patterning. China and Madagascar also contribute to the global supply, though Indian material remains the benchmark.

At the gem shows I attend regularly, Indian bloodstone is consistently what the serious dealers carry. The best pieces from the Deccan region have a depth of green and a vividness of red that is hard to match from other origins. It is one of those cases where the traditional source truly does produce the finest material.

How Bloodstone Lost March to Aquamarine

This is a question I get asked often, and the answer tells you something important about how the jewelry industry works.

When the American National Association of Jewelers (now Jewelers of America) created the first standardized birthstone list in 1912, bloodstone was listed as March's primary birthstone. It had held that association for centuries, and the 1912 list simply formalized what was already tradition.

Then came the 1952 revision. The Jewelry Industry Council updated the list, and aquamarine was elevated to the primary March position while bloodstone was moved to "traditional alternative" status.

Why the change? It comes down to practical jewelry-making and market appeal. Aquamarine is a transparent gem with brilliant blue-green color that works beautifully in faceted cuts, engagement-style settings, and the kind of fine jewelry that was becoming increasingly popular in the mid-20th century. It photographs well, it sparkles, and it appeals to a broad audience.

Bloodstone, on the other hand, is opaque with a dark color palette. It does not sparkle or catch light the way a faceted transparent gem does. Its strengths lie in carved pieces, cabochons, signet rings, and statement jewelry, categories that were falling out of mainstream fashion in the 1950s.

The 1952 change was not a judgment on bloodstone's quality or beauty. It was a commercial decision about which stone would sell more birthday jewelry. Bloodstone remains officially recognized as the traditional March birthstone, and for collectors and gemstone enthusiasts, it is often the more interesting choice.

If you are curious about how birthstone lists have evolved over the centuries, I have put together a detailed history of birthstones that traces these changes from ancient times to the present day.

Evaluating Bloodstone Quality

When you are shopping for bloodstone, the evaluation criteria are quite different from what you would use for a transparent faceted gem. Here is what to look for:

Color contrast is the key factor. The best bloodstone has vivid, well-distributed red spots set against a deep, even green base. The greater the contrast between the red and the green, the more dramatic and valuable the piece. Think of it like a painting: you want bold colors that play off each other.

Red spot size and distribution matter. Larger, more vivid red spots generally increase value, especially when they are distributed in an interesting pattern across the stone. Some collectors prize specimens where the red spots create a particularly striking visual composition.

The green base should be even and deep. Look for a rich forest green without brown or muddy patches. Brown undertones diminish the stone's visual impact and indicate lower-quality material. The green should be consistent and saturated.

Polish and luster tell you about quality. A well-cut bloodstone will have a smooth, waxy luster with a good polish. The surface should feel silky and show a soft sheen when you turn it in the light. Poor polish or a dull surface suggests either inferior material or careless cutting.

Cut style matters for bloodstone. Unlike transparent gems that are faceted to maximize brilliance, bloodstone is typically cut as cabochons, beads, or carved pieces. A good cabochon will have a well-proportioned dome that shows off the color pattern to its best advantage. For carved pieces, look for clean, precise detailing that takes advantage of the stone's fine grain.

Bloodstone in Jewelry Today

Bloodstone may have lost its primary birthstone status, but it has never disappeared from the jewelry world. In fact, it is experiencing something of a revival right now.

Traditionally, bloodstone has been most popular in men's jewelry. Signet rings with bloodstone intaglios (carved designs pressed into the surface) have been a classic for centuries, and they remain popular with men who appreciate traditional style. Bloodstone cufflinks are another timeless option. The stone's dark, rich color palette works naturally in masculine design contexts.

But bloodstone is finding new audiences among collectors and jewelry enthusiasts who are looking for something beyond the mainstream. In an era where many people wear similar-looking diamond and colored gemstone pieces, bloodstone stands out. It is a conversation starter. When you wear bloodstone, someone will inevitably ask about it, and you will have quite a story to tell.

In terms of settings, bloodstone works beautifully in gold. The warm tones of yellow gold create a stunning contrast with the cool green of the stone, and gold has been the traditional metal for bloodstone settings for thousands of years. Rose gold adds warmth, while white gold or silver creates a more contemporary look.

Bloodstone also appears frequently in beaded jewelry, where its deep green color alternates beautifully with other stones or with gold spacer beads. A well-made bloodstone bead bracelet or necklace has a substantial, grounded feel that is entirely different from lighter, more delicate gemstone jewelry.

With a Mohs hardness of 6.5 to 7, bloodstone is durable enough for most types of jewelry, including rings worn regularly. It is not as hard as sapphire or diamond, so you do need to exercise some care, but it is certainly robust enough for everyday wear with normal precautions.

Caring for Bloodstone

Bloodstone is a reasonably durable gemstone, but it does require some basic care to keep it looking its best over the years.

Hardness: At 6.5 to 7 on the Mohs scale, bloodstone sits in the middle range. It is harder than many popular materials but softer than sapphire, topaz, and diamond. This means it can be scratched by harder gems if stored together carelessly.

Cleaning: The safest method is warm soapy water and a soft cloth. Gently wash the stone, rinse thoroughly, and pat dry with a lint-free cloth. This simple approach is all you need for routine maintenance.

What to avoid: Stay away from harsh chemicals, including bleach, ammonia-based cleaners, and strong detergents. These can damage the surface or affect the polish. Ultrasonic cleaners should also be avoided, as the vibrations can stress the stone, particularly if it has any internal fractures or inclusions near the surface.

Storage: Keep bloodstone pieces in a separate soft pouch or lined compartment in your jewelry box. Do not let it sit loose with harder gems like diamonds, sapphires, or rubies, which can scratch the surface. A little care in storage goes a long way toward preserving that beautiful waxy polish.

Wearing tips: Remove bloodstone jewelry before doing heavy physical work, gardening, or cleaning with chemicals. While the stone is tough enough for everyday wear, there is no reason to expose it to unnecessary risk.