Peridot is the August birthstone, and it's also one of the most misunderstood. People see it as a cheap, light green stone from a mall jewelry counter, and they walk right past it. That's a shame, because fine peridot — the saturated, slightly yellow-green material coming out of Myanmar and Pakistan — is a genuinely beautiful gem, with a warm tone that flatters almost every skin type.

It's also one of the few gems on earth that exists in essentially one color. Corundum comes in red and blue; beryl comes in green, blue, and pink. Peridot comes in green — always green, ranging from yellowish to brownish depending on iron content. There is no "peridot red" or "peridot blue." What you see is what you get, and what you get is a distinctive olive-to-bottle green with a slightly velvety, glowing luster.

Where peridot comes from

Peridot is the gem variety of the mineral olivine, a magnesium iron silicate. Unlike most gems, which form in igneous or metamorphic rocks deep in the crust, peridot crystallizes in basalt lava flows. The ancient source was St. John's Island in the Red Sea, mined by Egyptian pharaohs as early as 1500 BC. Today the main commercial sources are Arizona (which produces lighter, yellowish-green material), Pakistan and Myanmar (which produce the deeper, finer green), and China.

Peridot even falls to earth in meteorites. The gem has been found in pallasite meteorites, where it forms beautiful crystals embedded in iron-nickel rock. That material is rare and sold to collectors, not setters, but it's a nice piece of trivia if you ever need a conversation starter at a jewelry event.

Hardness and durability: honest expectations

Peridot is a 6.5 to 7 on the Mohs scale. That puts it right at the line we use for everyday-wearable gems. It's hard enough for a ring you wear Monday through Friday, but it's noticeably softer than sapphire (9) or spinel (8). Over years of daily wear, the facet edges will start to round, and a stone that was initially bright will look a little "soft."

There's another catch: peridot is sensitive to acid. The stone is made of iron and magnesium silicate, and prolonged contact with chemicals — perfume, hairspray, sulfur fumes, even some household cleaners — can pit the surface. We always tell peridot owners to spray perfume and hairspray before putting the jewelry on, not after.

Because of that chemical sensitivity, we set peridot in rings with a little extra care. Thin prongs that grab the stone tightly can chip it; we prefer slightly wider prongs or a bezel setting that distributes pressure. We also never put peridot in an ultrasonic cleaner. The vibration plus the chemical solution can etch the surface over repeated sessions.

How to judge peridot quality

The color scale runs from yellowish-green (least desirable) to olive-green (most desirable). The "ideal" peridot is a slightly yellow, saturated olive — sometimes compared to the color of fresh olive oil. Avoid stones that are too brown, which read as muddy in low light, and avoid stones that are too light, which read as pale glass.

Clarity in peridot is tricky. Fine peridot often contains characteristic "lily pad" inclusions — disc-shaped crystals that look like little reflections of water. These are normal and actually help identify the stone. Eye-clean material exists, but for the deeper green Pakistani peridot, a few inclusions are accepted because the color carries the value. Unlike diamonds, where clarity dominates the price, peridot buyers are paying for color.

Cut matters more than most buyers realize. Peridot has a high refractive index but strong double refraction, which can make the edges of facets look doubled if the stone isn't cut cleanly. A well-cut peridot will look bright and lively; a poorly cut one will look dull and "sleepy." Insist on viewing the stone in daylight before you commit.

Setting and styling

Peridot works beautifully in yellow gold, where the warm metal complements the olive tone. It also looks fresh in rose gold, which is why we see it pop up in August birthstone designs every year. White gold and platinum can make peridot look slightly cooler than it really is, but it's not a bad look — just different.

For an engagement ring, peridot is a personal choice. It's soft enough that we'd suggest a bezel or protective setting rather than a thin solitaire. As a birthstone pendant, earrings, or a right-hand ring, peridot is nearly ideal: durable enough to enjoy, affordable enough to buy without a committee meeting, and a color you won't see on half the people at the office.

Keeping it bright

Clean peridot with warm water, a drop of mild dish soap, and a soft baby's toothbrush. Don't soak it; don't steam it; don't ultrasonicate it. Dry it with a lint-free cloth. Store it in a separate pouch or compartment so a sapphire or diamond in the same box doesn't scratch the facet edges.

With that routine, a good peridot will keep its glow for decades. It isn't a sapphire, and it doesn't pretend to be. It's one of the few gems with a color you can't find anywhere else, and for the buyer who wants that specific olive green, there is no substitute.

The International Gem Society moissanite guide explains how moissanite performs in daily wear compared with diamond.

Authoritative References

For buyers who need to verify the technical and regulatory basis of this guide, the following independent institutions publish authoritative reference data:

Frequently Asked Questions

How do I verify a factory before placing a bulk order?

Request a production video, business license, export records and a paid sample run. A factory that accepts a 50-piece test order is usually a real manufacturer.

What payment terms do you offer?

30% T/T deposit with the balance against the bill of lading. This protects both sides on first orders and can move to net terms after a track record.

What is your normal reject rate?

3–5% under 10x loupe inspection for cast and set pieces. Defective units are replaced free in the next shipment.

Where is the factory located?

Wuzhou, Guangxi, China—the core lab-grown and moissanite manufacturing cluster. Shipments go via Guangzhou or Shenzhen ports.