White Gemstones: Meanings, Types & Jewelry Guide

White has never meant plain. Where blue stones calm, green stones renew, pink stones speak of love, and purple stones carry an air of nobility, white gemstones do something none of the others can: they catch light without ever needing color to do it. A moonstone's glow, a pearl's soft luster, an opal's hidden flash — the beauty is in the light itself, not a pigment.

Below are the best-known white gemstones — moonstone, pearl, white opal, clear quartz and Herkimer diamond, and mother of pearl — their meanings, how to tell them apart, and how to wear them. For the full month-by-month picture, see our Birthstones & Their Meanings Guide or the Complete Guide to Gemstones.

Moonstone — The Stone of Inner Light

Moonstone is a feldspar mineral best known for adularescence — a soft, floating glow that seems to move just beneath the surface as the stone catches the light, sometimes called blue flash or blue fire. Ancient legend held that moonstone was made of solidified moonlight, and it's carried associations with intuition, balance, and new beginnings ever since. It's one of June's birthstones, alongside pearl and alexandrite.

At 6–6.5 on the Mohs scale, moonstone holds up well in necklaces, earrings, and bracelets worn regularly. Rings need a bit more awareness around hard knocks, since moonstone can chip along its natural cleavage planes even though its surface resists scratching. Our rainbow moonstone shows the effect especially well, with soft flashes of blue and iridescent color running through the stone. The Moonstone Necklace keeps it minimal with a single genuine stone, the Teardrop Moonstone Necklace adds a bit more presence, and the Rainbow Moonstone Threader Earrings let the glow move with you. For the complete story on moonstone — meaning, history, and how it compares to opal — read our Moonstone Meaning guide or our Moonstone vs. Opal comparison. Shopping for a June birthday? See our June Birthstone Gift Guide.

Pearl — An Organic Gem Formed Inside a Mollusk

Pearl is different from the mineral gemstones in this guide. It's organic — like coral and amber — grown inside a living mollusk as it coats an irritant with layer after layer of nacre. That origin has made pearl a symbol of purity, wisdom, and integrity for thousands of years, and it's traditionally the gemstone for a 30th wedding anniversary. Pearl is one of June's birthstones alongside moonstone and alexandrite.

Pearl is by far the softest gem in this guide, at 2.5–4.5 on the Mohs scale, so it needs a different care routine than the mineral gemstones covered here. Pearls should go on after perfume, lotion, and hairspray have fully dried, and get wiped with a soft cloth after every wear to remove oils and perspiration. Our Dainty Pearl Pendant Necklace keeps it timeless and simple, the Freshwater Pearl Bracelet lines three genuine pearls along a delicate chain, and the Pearl Threader Earrings bring the same luster to your ears. Browse the full Pearl Collection. For more on pearl's history and how to care for it long-term, see our Pearl Meaning guide, our complete pearl care guide, and Freshwater vs. Cultured Pearls.

White Opal — Hope, Fire, and a Stone That Needs Its Own Rules

White opal is a hydrated form of silica, holding water within its own structure. In precious opal, that structure can also produce play-of-color — brilliant, shifting flashes of color that appear as light diffracts through a microscopic arrangement of silica spheres, sometimes called fire. Opal is an October birthstone, sharing the month with pink tourmaline, and it's traditionally associated with hope, creativity, and individuality.

The opal we work with is genuine Ethiopian Welo opal, which is commonly hydrophane — its porous structure readily absorbs water and other liquids, temporarily changing its transparency and play-of-color. GIA lab testing on hydrophane opal found weight gains of 5–13% after water exposure, with the stone taking approximately a week to return to its original appearance — and oils or cosmetics can cause lasting changes rather than temporary ones. That's why opal jewelry gets a different rule than everything else in this guide: keep it away from prolonged water exposure, oils, lotions, and perspiration, and remove it before showering, swimming, or exercising. Our Dainty Opal Necklace and Opal Bracelet both showcase opal's soft white body color. Browse the full Opal Jewelry Collection. For the full picture, including how it compares to moonstone, see our Opal Birthstone Guide and Moonstone vs. Opal. Shopping for an October birthday? See our October Opal Gift Guide.

Clear Quartz & Herkimer Diamond — Everyday Clarity

Clear quartz is colorless quartz that ranges from crystal clear to naturally included or lightly clouded, prized for centuries as a symbol of clarity and amplified energy in crystal healing traditions. Herkimer diamond is a special form of it — a naturally double-terminated quartz crystal found almost exclusively near Herkimer County, New York, faceted by nature rather than a lapidary. Both are popular natural diamond alternatives for April, with clear quartz widely used as an alternative April birthstone.

At 7 on the Mohs scale, clear quartz and Herkimer diamond are among the most durable stones in this entire guide — genuinely easy, everyday wear with no special handling required. Our Dainty Clear Quartz Necklace keeps it minimal, the Crystal Quartz Ball Necklace lets a natural crystal ball pendant slide and move with you, and the Dainty Herkimer Diamond Necklace showcases that naturally faceted sparkle. Browse the full Clear Quartz Collection or Herkimer Diamond Collection.

Mother of Pearl — The Shell's Own Shimmer

Mother of pearl is the same substance as pearl itself — nacre — but instead of forming a standalone sphere around an irritant, it lines the inside of the mollusk's shell. That's what gives it a sheet of iridescent shimmer rather than a single glowing point, and it's long been associated with the ocean, protection, and calm. It isn't tied to a specific birth month, which makes it a versatile pick for summer and nature-inspired pieces year-round.

Like pearl, mother of pearl is soft and organic — roughly 3.5 on the Mohs scale — and benefits from the same gentle care: wipe it down after wear and keep it away from perfume and harsh chemicals. Our Star Charm Necklace in Mother of Pearl is a soft, everyday way to wear it.

Other White Gemstones Worth Knowing

A few more white and colorless stones come up often in birthstone and crystal conversations. We don't currently carry any of these, but they're worth knowing if you're comparing options:

• Diamond — the classic colorless gemstone and April's traditional birthstone, at 10 on the Mohs scale, the hardest natural material on Earth. Its brilliance and fire go well beyond what any stone in this guide can match, at a very different price point.
• White Sapphire — a colorless variety of corundum at 9 Mohs, extremely durable with a softer, more understated sparkle than diamond.
• White Topaz — naturally colorless, 8 Mohs, a common affordable diamond alternative that doesn't hold its polish quite as long with wear.
• White Zircon — a natural gemstone (not to be confused with manmade cubic zirconia) known for bright dispersion and sparkle.
• White Agate — an opaque form of chalcedony at 6.5–7 Mohs, with an even, milky-white color.
• Howlite — a soft white mineral with distinctive gray veining, around 3.5 Mohs, so it scratches more easily than quartz or moonstone.
• Selenite — a translucent form of gypsum linked to cleansing and clarity in crystal traditions. At just 2 Mohs, it's really a decorative crystal rather than an everyday jewelry stone.

White Gemstones at a Glance

Gemstone	Type	Mohs hardness	Best suited for
Moonstone	Mineral (feldspar)	6–6.5	Everyday necklaces, earrings, and bracelets; rings with added care
Pearl	Organic	2.5–4.5	Necklaces and earrings, with gentle handling
White Opal	Mineraloid (hydrated silica)	5–6.5	Necklaces and earrings, kept dry
Clear Quartz / Herkimer Diamond	Mineral	7	Everyday wear, including rings and bracelets
Mother of Pearl	Organic	~3.5	Necklaces and earrings, with gentle handling

How to Tell White Gemstones Apart

A quick field guide: moonstone shows a floating, concentrated glow that seems to hover beneath the surface as you tilt it. Pearl is an opaque sphere with a soft, layered luster called orient — no faceting, no transparency. White opal is translucent to semi-opaque and may show flashes of color moving across the stone. Clear quartz and Herkimer diamond are fully transparent, glasslike, and faceted — Herkimer diamond uniquely so, since its facets form naturally rather than being cut. Mother of pearl is flat or shell-shaped, with a sheet of rainbow iridescence across the surface rather than a single glowing point. Appearance alone can't confirm a gemstone's identity with certainty — a jeweler or gemologist can always give you a definitive answer.

How to Wear White Gemstones

White gemstones read as clean and versatile, and metal choice shapes their character. Gold-filled warms these cool-toned stones for a soft, romantic look. Sterling silver keeps everything crisp and modern, letting the stone's own glow do the talking. Rose gold is the most unexpected pairing, pulling out warm undertones for something a little softer.

✨ Stylist idea from the studio: layer the Teardrop Moonstone Necklace at 16" over the Dainty Pearl Pendant Necklace at 18" for a soft, monochrome white stack. Not sure which lengths layer best? Our Necklace Length Guide breaks it down.

Caring for White Gemstones

Clear quartz and Herkimer diamond are the lowest-maintenance stones in this guide: mild soap, warm water, and a soft cloth are generally all they need. Moonstone also holds up well in a regular jewelry rotation, although it should be protected from hard impacts because it can chip along its natural cleavage planes. Pearl and mother of pearl are softer organic materials: they should go on last (after perfume, lotion, and hairspray) and come off first, with a gentle wipe after every wear to remove oils and perspiration — never an ultrasonic cleaner. White opal needs a rule of its own: because our Ethiopian Welo opal is hydrophane, keep it away from prolonged water exposure, oils, lotions, and perspiration, and remove it before showering, swimming, or exercising.

Looking for a white gemstone you can wear every single day without a second thought? Moonstone and clear quartz offer the best combination of everyday durability and effortless care. Explore the full Moonstone & Pearl Collection — handmade necklaces, earrings, and bracelets, each made with genuine stones in our NYC studio.

White Gemstone FAQ

What is the best white gemstone for everyday wear?

Diamond and white sapphire are the most durable white gemstones overall, at 10 and 9 Mohs. Among the white stones we currently use at Lolabean, clear quartz and Herkimer diamond offer the greatest scratch resistance at 7 Mohs, followed closely by moonstone at 6–6.5.

Is moonstone a real gemstone?

Yes. Moonstone is a genuine mineral in the feldspar family, not a manmade or simulated material — its glow (adularescence) comes from thin internal layers scattering light naturally.

What's the difference between pearl and mother of pearl?

Pearl is a complete, standalone gem formed inside a mollusk as it coats an irritant in nacre. Mother of pearl is the same substance — nacre — but lining the inside of the shell itself, which is why it shows a sheet of iridescence rather than a single rounded gem.

Can white gemstones get wet?

It depends on the stone. Moonstone, clear quartz, and Herkimer diamond handle everyday water exposure fine. Pearl and mother of pearl should be wiped dry after any contact with water, sweat, or chemicals. White opal needs the most care of all — keep it away from prolonged water exposure, oils, lotions, and perspiration, and remove it before showering, swimming, or exercising.

What gemstone is milky white?

Moonstone, white opal, pearl, white agate, and some naturally included quartz can all appear milky white. Moonstone usually shows a floating blue or silver glow, while white opal may flash several colors and pearl has a smooth, layered luster.

Which white gemstones are birthstones?

Diamond is April's traditional birthstone, with clear quartz commonly used as an accessible alternative. Pearl and moonstone are June birthstones, white opal belongs to October, white sapphire belongs to September's sapphire family, and colorless zircon is one of December's traditional birthstones.

Explore the rest of our color series: Blue Gemstones, Green Gemstones, Pink Gemstones, Purple Gemstones, and Red Gemstones — or start from the top with the Complete Guide to Gemstones. Every piece we make is handcrafted in our New York City studio using genuine stones, the way we've done it since 2005.