Most months get one birthstone. June gets three, and they could hardly be more different: a gem that changes color depending on the lamp above it, an organic gem grown inside a living mollusk, and a feldspar that glows as though lit from within. If you were born in June, or you are shopping for someone who was, the choice is a good one to have, but it helps to know what you are choosing between.
This guide explains each June birthstone in plain terms: where it comes from, what separates a fine example from an average one, how well it wears, and which kind of jewelry suits it. Along the way we point to the details that matter most when you buy, since the right June stone depends far more on how you will wear it than on which name is most famous.
Why June Has Three Birthstones
Birthstone lists were never handed down from antiquity in one tidy piece. The modern American list was standardized in the early twentieth century and has been revised since, which is how June ended up with pearl as the traditional stone, moonstone as a long-standing companion, and alexandrite added in the mid-twentieth century. For a buyer, that history is a gift: all three are accepted, so you can choose on beauty and practicality alone.
If you like to browse by month, our June birthstones collection gathers the options in one place, and our broader gemstone types page explains how the families relate to one another.
Alexandrite: The Color-Change Gem
What makes alexandrite special
Alexandrite is a variety of chrysoberyl, colored by traces of chromium. Its party trick is a color change: green to bluish green in daylight or fluorescent light, shifting to purplish red or raspberry under incandescent light. The physics is tidy. Chromium absorbs light in the yellow-green region of the spectrum, which leaves two transmission windows, one blue-green and one red. Daylight is richer in blue-green and incandescent light is richer in red, so the stone shows whichever window the lighting favors. The story goes that the gem was found in Russia's Ural Mountains in the 1830s and named for the future Tsar Alexander II, a tale that fits neatly because red and green were also Imperial Russia's military colors.
How to judge alexandrite quality
Two questions come first. How complete is the change, and how pleasing are the two colors? A fine stone moves clearly between a vivid bluish green and a purplish red; a lesser one drifts from olive to brownish and never quite commits. Our color guide explains why hue, tone and saturation each play a part here. After color change, clarity and cut matter, and so does size, because strong-change material above a few carats becomes genuinely scarce. Historic Russian stones are now a collector's category, and most alexandrite on the market today comes from Sri Lanka, Brazil, India, Madagascar and East Africa. Origin can influence both the character of the color and the market's appetite, which we discuss in why where a stone was mined changes its value.
Natural, lab-grown and look-alikes
Here a careful buyer should slow down. Lab-grown alexandrite is real chrysoberyl with the same chemistry and color change, and it is a legitimate choice when it is described as such. Separately, color-change synthetic corundum is sometimes sold under the alexandrite name, but it is a different mineral. A color change alone does not settle the question. For a significant purchase, ask for a lab report that names the species and states whether the stone is natural or lab-grown, and read our overview of lab-grown versus natural stones for how those categories differ. Every listing on our site states whether a stone is natural, lab-grown or cultured, and our alexandrite collection is the place to see what is currently available.
Wearing alexandrite
At Mohs hardness 8.5 with no cleavage to speak of, alexandrite is among the more durable colored stones, and it is a sensible choice for a ring that will see regular wear. If it will be worn daily, consider a protective setting that shields the girdle, since even a hard gem can chip if it is struck at the wrong angle.
Pearl: The Classic June Stone
Natural, cultured and imitation
Pearls are the only major gem made by a living creature. A mollusk deposits layers of nacre, a composite of microscopic aragonite crystals and organic conchiolin, around an irritant. Natural pearls form without human help and are extremely rare today. Cultured pearls begin when a technician implants a bead or a piece of mantle tissue, and the mollusk does the rest. They are real pearls, and they account for nearly everything in the jewelry market. Imitation pearls are glass or plastic with a coating, and they are not pearls at all. Our guide to identifying a real pearl walks through the practical tests.
What to look for
Luster is the first thing a trained eye reads: a sharp, mirror-like reflection signals thick, well-formed nacre, while a chalky, dull surface does not. Next come surface quality, shape, size and color. Pearl color has three parts: the bodycolor, the overtone that floats over it, and orient, the iridescence that plays across the surface. The main families differ in character. Akoya pearls are known for crisp luster and classic round shapes, South Sea pearls for size and a satiny glow, Tahitian pearls for dark bodycolors, and freshwater pearls for variety and approachable pricing. Matching also counts in a strand or a pair of earrings, so look at pearls together, in natural light, before deciding.
Caring for pearls
Pearl is soft, roughly 2.5 to 4.5 on the Mohs scale, and it is sensitive to acids and cosmetics. Put pearls on last and take them off first, wipe them with a soft damp cloth, and store them apart from harder gems. These habits are the difference between pearls that stay luminous for decades and ones that dull in a few years. Pearls shine in earrings, pendants and necklaces, and our necklaces are a good place to start if you want a piece you can wear often.
Moonstone: The Glow From Within
The science of adularescence
Moonstone is a member of the feldspar group, an intergrowth of orthoclase and albite. As the crystal cools, the two minerals separate into extremely thin alternating layers, and light scattering between those layers produces adularescence, the floating, billowy sheen that seems to drift across the stone as you move it. It is a different effect from the play-of-color seen in opal, which you can read about on our opal page.
What to look for
The most prized moonstone has a nearly colorless, transparent body with a vivid blue sheen that fills the stone from several viewing angles. Whiter or more translucent material with a softer sheen is more common and still lovely. Because the effect lives in the layers, cut matters: moonstone is usually cut as a cabochon with the dome aligned to center the sheen. Sri Lanka and India are classic sources, with Madagascar and Tanzania also supplying material. A note on naming: stones sold as rainbow moonstone are typically labradorite, a different feldspar, so ask what you are really buying if the label is vague.
Wearing moonstone
Moonstone is Mohs 6 to 6.5 and has perfect cleavage in two directions, so a hard knock can crack it. That makes it a better fit for earrings, pendants and occasional rings than for a ring worn every day. Clean it with warm soapy water and a soft cloth, and skip the ultrasonic cleaner.
Which June Birthstone Should You Choose?
Think about how the piece will live. If you want a ring that can handle daily life and a gem with a story to tell, alexandrite is the strongest candidate. If you want timeless elegance in a necklace or earrings, pearl is hard to beat. If you love a quiet, luminous look and will treat it with some care, moonstone has a charm the others do not. Fit and setting matter too, so our gemstone shapes page and treatments explained guide are worth a read before you commit. If you would like something made around a specific stone, our bespoke service is the place to begin.
Frequently Asked Questions
Which stone is the real June birthstone?
All three are accepted. Pearl is the traditional June stone, moonstone has long been paired with it, and alexandrite was added in the twentieth century. There is no wrong choice, so pick by lifestyle: alexandrite for durability and drama, pearl for classic luster, moonstone for a soft glowing sheen. You can browse our June birthstones collection to compare them side by side.
Why does alexandrite change color?
Alexandrite contains traces of chromium that absorb light in the yellow-green part of the spectrum, leaving two transmission windows, one blue-green and one red. Daylight is rich in blue-green, so the stone looks green or bluish green. Incandescent light is rich in red, so the same stone looks purplish red. How strongly it shifts is a major quality factor. Our alexandrite guide goes deeper.
Is alexandrite durable enough for an everyday ring?
Yes. Alexandrite is chrysoberyl, with a Mohs hardness of 8.5, which makes it one of the harder colored stones and well suited to rings, though a hard stone can still chip if knocked on an edge. Moonstone and pearl are much softer, so they suit earrings and pendants better than daily-wear rings. See our durability guide for more on hardness versus toughness.
How can I tell a natural alexandrite from a synthetic or simulant?
Color change alone does not prove a stone is natural alexandrite. Lab-grown alexandrite is real chrysoberyl with the same color change, while some color-change synthetic corundum is sold under the alexandrite name but is a different material. Only a gem lab can separate natural from lab-grown with confidence, so ask for a lab report on any significant purchase. Every listing on our site states whether a stone is natural, lab-grown or cultured.
What is the difference between natural, cultured and imitation pearls?
Natural pearls form with no human help, which makes them very rare. Cultured pearls grow in mollusks after a technician implants a bead or tissue, and they are real pearls. Imitation pearls are glass or plastic with a coating. Our guide on identifying a real pearl covers simple at-home checks and why a lab test is the only certain answer.
How should I care for moonstone and pearl jewelry?
Both are soft, so treat them gently. Put pearls on last after perfume, hairspray and lotion, then wipe them with a soft damp cloth before storing them separately from harder stones. Moonstone has perfect cleavage and can crack on a hard knock, so protect it from impact and avoid ultrasonic cleaners. Warm soapy water and a soft cloth are enough for both.
