June Birthstone Guide: Pearl, Alexandrite & Moonstone

If you or someone you love has a June birthday, you have an embarrassment of riches: June is one of the few months with three birthstones — the pearl, alexandrite, and moonstone. They could hardly be more different from one another. One is born inside a living mollusk, one is among the rarest gemstones on earth and changes color with the light, and one glows with a soft inner light that seems to drift across its surface. Choosing among them — or collecting all three over time — is part of what makes June such an interesting month for jewelry.

This guide walks through why June has three birthstones, the meaning and lore behind each, the practical knowledge you’ll need to evaluate them (which differs completely from stone to stone), and how to think about June birthstone jewelry as both an everyday piece and a long-term family heirloom.

Why June Has Three Birthstones

The modern birthstone list was standardized by the American National Retail Jewelers Association — now Jewelers of America — in 1912, and it assigned both the pearl and the moonstone to June. Alexandrite was added decades later, in the twentieth century, as new deposits expanded its availability. The result is a single month with three official birthstones spanning three completely different categories of gem: an organic gem (pearl), a rare color-change crystal (alexandrite), and a feldspar prized for an optical effect (moonstone).

Each carries its own deep history. Pearls are among the oldest gemstones used by humankind, treasured for thousands of years before the first diamond was ever faceted, and once so valuable they were the gem of emperors and queens. Alexandrite was discovered in Russia’s Ural Mountains in the 1830s and named after the future Tsar Alexander II; because its green-and-red color change echoed imperial Russia’s military colors, it became a national favorite. Moonstone has been tied to moonlight and the divine in cultures from ancient Greece and Rome to India, where it has long been considered a sacred stone.

Pearl is also the traditional gemstone for the 3rd and 30th wedding anniversaries, and alexandrite marks the 55th — so June’s stones carry milestone meaning well beyond a birthday.

The Meaning and Symbolism of June’s Birthstones

Each of June’s three stones carries its own symbolism:

• Pearl — purity, wisdom, and calm. Long associated with the moon and the ocean, pearls have symbolized purity, integrity, and quiet wisdom across nearly every culture that has worn them.
• Alexandrite — balance and transformation. Known as “emerald by day, ruby by night,” alexandrite’s dramatic color change has made it a symbol of balance, adaptability, and good fortune.
• Moonstone — intuition and new beginnings. Its drifting inner light has tied it to the moon, to intuition, and to fresh starts; in many traditions it is a traveler’s stone and a bringer of calm.

Together they make June unusually rich for anyone who likes meaning in their jewelry: a single month offers the timeless classicism of the pearl, the rarity and drama of alexandrite, and the quiet mystique of moonstone.

How to Actually Evaluate June’s Birthstones

Because June’s three stones are so different, there is no single framework like the diamond’s 4 Cs that applies to all of them. Each is judged on its own terms.

Pearl

Pearls are organic gems formed inside mollusks, and they are soft — 2.5 to 4.5 on the Mohs scale — so they are evaluated and cared for very differently from crystalline stones. The factors that matter most:

• Luster — the single most important factor. High-luster pearls show sharp, bright reflections; low-luster pearls look chalky or milky. Luster comes from the quality and thickness of the nacre.
• Nacre quality — thicker nacre means a more durable, more lustrous pearl. Thin nacre, common in lower-grade cultured pearls, can dull or flake over time.
• Surface — fewer spots, bumps, and blemishes command a premium, though most pearls carry some surface character.
• Shape — perfectly round is rarest and most valued for classic strands, but baroque (irregular) and drop shapes are prized in designer pieces.
• Color and overtone — body color (white, cream, gold, black) plus the subtle overtone (rose, silver, green) that plays across the surface.
• Size and type — freshwater pearls are the most accessible; saltwater Akoya, Tahitian (naturally dark), and South Sea (large, golden or white) pearls command higher prices. Natural wild pearls are extraordinarily rare; nearly all pearls on the market today are cultured.

Alexandrite

Alexandrite is the rarest of June’s birthstones and one of the rarest gemstones in the world. It is a color-change variety of the mineral chrysoberyl, and it is hard and tough enough for everyday wear at 8.5 on the Mohs scale. The factors that matter:

• Color change — the defining quality. Fine alexandrite shifts from green or bluish-green in daylight to red, purplish-red, or raspberry under incandescent light. The stronger and more complete the change, the more valuable the stone.
• Color quality — vivid, saturated colors in both lighting conditions are far more desirable than muddy or grayish ones.
• Clarity and cut — eye-clean stones cut to maximize the color change are most prized.
• Carat and origin — fine natural alexandrite above one carat is rare and costly. The original Russian Ural material is legendary; today most comes from Brazil, Sri Lanka, and East Africa. Because natural alexandrite is so scarce, most “alexandrite” in commercial jewelry is lab-grown or a simulant — always ask whether a stone is natural, lab-grown, or imitation, and expect documentation for any significant natural stone.

Moonstone

Moonstone is a variety of feldspar prized for adularescence — the soft, billowy glow that appears to float just beneath the surface and to move as the stone is tilted. It is softer (6 to 6.5 on the Mohs scale) and has cleavage, so it needs gentler handling. What to look for:

• Adularescence — the strength, color, and movement of the inner glow. A vivid blue sheen on a near-colorless, transparent body is the most prized combination.
• Body color and transparency — moonstone ranges from colorless to white, gray, peach, and green; the more transparent the body, the more dramatic the floating light.
• Clarity — internal cracks can weaken the stone and interrupt the sheen, so cleaner stones are preferred.
• Origin — Sri Lanka produces the finest classic blue-sheen moonstone; India, Madagascar, and others supply a wide range of colors, including the popular “rainbow moonstone” (technically a labradorite) with multicolored flash.

Alternative June Birthstones

While pearl, alexandrite, and moonstone are June’s official birthstones, each has well-known alternatives worth knowing — particularly if budget, durability, or aesthetic preference factor into the decision:

• Lab-grown alexandrite — chemically and optically identical to natural alexandrite, with the same color change, at a small fraction of the cost. The practical choice for most alexandrite jewelry.
• Color-change sapphire or color-change garnet — natural stones that mimic alexandrite’s day-to-night shift and are often easier to source than fine natural alexandrite.
• Rainbow moonstone and labradorite — for those drawn to moonstone’s glow, these offer a stronger, more colorful flash.
• Freshwater pearls and mother-of-pearl — accessible ways to wear June’s classic pearl look, from everyday studs to statement strands.

Each has a different character. The right choice depends on whether you’re after the timelessness of pearl, the drama and rarity of alexandrite, or the quiet glow of moonstone.

Choosing a June Birthstone in Hawaii

June’s stones reward seeing in person more than almost any other birthstone. Alexandrite’s color change and moonstone’s adularescence simply cannot be judged from a catalog photo — both depend on how the stone behaves as light moves across it, which is exactly what a single image can’t capture. Pearls, too, need to be seen for their luster and overtone, which photographs tend to flatten.

At Jewel Box Hawaii, we work with vetted suppliers and disclose the nature of every stone — natural versus cultured for pearls, and natural versus lab-grown versus simulant for alexandrite. We encourage clients to view June’s stones in person under different light sources, especially alexandrite, where daylight and indoor light tell two completely different stories. Pearls in particular hold a special place in island and Pacific culture, and they remain one of the most requested gems we set.

Caring for Pearl, Alexandrite & Moonstone — Especially in the Islands

Two of June’s three stones are delicate, so care matters more than usual — and Hawaii’s combination of sunscreen, salt water, and sand is especially hard on soft gems.

• Pearls and moonstone are soft — treat them gently. Never use ultrasonic or steam cleaners on either; both can crack moonstone and strip or dull a pearl’s nacre.
• For pearls, “last on, first off.” Put pearls on after perfume, sunscreen, hairspray, and lotion, and take them off first. The chemicals in those products — and the acids in sweat — eat away at nacre over time.
• Keep pearls and moonstone out of the ocean and the pool. Salt water and chlorine both damage pearls, and impact against rock or a pool edge can chip moonstone.
• Wipe pearls after wearing with a soft, damp cloth, and store them flat and separate from harder jewelry so they don’t get scratched. Pearl strands also benefit from periodic restringing — knotted silk wears out, and a broken strand at the wrong moment is heartbreaking.
• Alexandrite is the easy one. At 8.5 on the Mohs scale it’s durable enough for daily wear, including rings, and tolerates normal cleaning with warm water and mild soap.
• Clean gently. For pearls and moonstone, use warm water, a drop of mild soap, and a soft cloth — no brushing, no harsh chemicals.

Pearl restringing, moonstone resetting, and general maintenance are part of our restoration and heirloom care services — particularly valuable for pearl strands and soft stones that have been in the family for years.

Gift Ideas for a June Birthday

If you’re shopping for someone with a June birthday, a few directions worth considering:

• Classic pearl studs or a strand — the most timeless, wearable entry point, appropriate from a first piece of fine jewelry to an heirloom passed down for generations.
• A custom-designed piece featuring moonstone or pearl — a moonstone pendant or a pearl set in a modern design makes a distinctive, personal gift. We routinely design around a single special stone.
• Alexandrite for a milestone — for a significant birthday or the 55th anniversary, natural or lab-grown alexandrite makes a rare, memorable gift with a built-in story.
• An Aloha Pauahi heirloom bracelet with a pearl accent — for someone with deep Hawaiian roots, the Aloha Pauahi line celebrates cultural heritage alongside the personal milestone of a June birthday.

Schedule a Consultation

Whether you’re choosing a pearl for a milestone, hunting for a fine alexandrite, or designing a piece around a moonstone, we’d be glad to help. Browse our gemstone inventory or schedule a consultation to start a conversation.