June Birthstone: Pearl, Alexandrite and Moonstone
Short answer: June is one of only three months with three birthstones — pearl, alexandrite, and moonstone. Pearl is the traditional stone and by far the softest of the trio, alexandrite is the rare gem that changes color with the light (and in almost any piece you can actually afford, it is lab-created), and moonstone is the glowing feldspar that sits between them in both hardness and price. Below is what each stone really is, where it lands on the Mohs hardness scale, and which one is easiest to live in every single day.
Key takeaways
- June has three birthstones — pearl, alexandrite, and moonstone. It is one of just three months (with August and December) that carries three.
- Hardness is the practical difference: pearl is soft (roughly 2.5 to 4.5 on the Mohs scale), moonstone is moderate (6 to 6.5), and alexandrite is hard (8.5, just under sapphire).
- Almost all affordable alexandrite is lab-created. That is not a downgrade — it is chemically identical to the natural stone — but an honest seller will tell you which one you are buying.
- Pearl and moonstone are the old June stones, on the modern list since 1912; alexandrite is the newcomer, added in 1952.
- If you want a June look you can wear in the shower without babying it, pair a soft stone with a durable setting, or reach for a simulated-pearl piece on waterproof, tarnish-free steel.
June's three birthstones at a glance
Most "what is June's birthstone" answers stop at a single stone. The fuller and truer answer is three, and the reason it matters is that they are wildly different materials. One is grown by a mollusk, one is a chromium-tinted crystal rarer than a diamond, and one is a feldspar that scatters light like a small captured moon. Here is the quick version, according to the Gemological Institute of America, before we take each one on its own.
| Stone | What it actually is | Mohs hardness | Signature trait | Everyday-wear note |
|---|---|---|---|---|
| Pearl | Organic gem — layers of nacre (mostly calcium carbonate) grown inside a mollusk | 2.5 – 4.5 | Soft, warm luster | Softest gem you can wear; scratches easily |
| Alexandrite | Rare color-change variety of the mineral chrysoberyl | 8.5 | Changes color with the light | Hardest of the three; nearly always lab-created |
| Moonstone | Gem feldspar (orthoclase) | 6 – 6.5 | Adularescence — a floating, moon-like glow | Moderate; durable enough for careful daily wear |
Those hardness numbers come from the Mohs scale, a one-to-ten ranking of how well a material resists scratching. It is not a strength rating — even a hard stone can crack from a sharp knock — but it is the most useful single number for deciding how gently a stone needs to be handled.
Pearl: the traditional (and softest) June stone
Pearl is the June stone most people picture, and it has held that spot the longest. It is also the odd one out, because it is not a mineral pulled from the ground. A pearl grows inside an oyster or mussel, one microscopic layer at a time, as the animal coats an irritant in nacre — the same iridescent material, mostly calcium carbonate, that lines the inside of the shell. That layered, organic structure is exactly what gives a pearl its soft glow, and also exactly why it is fragile.
On the Mohs scale a pearl sits at only about 2.5 to 4.5, softer than almost anything else people wear daily. For comparison, ordinary window glass is around 5.5 and quartz is 7, which means the dust and grit floating around your bathroom counter can scratch a pearl. Pearls are also porous, so perfume, hairspray, and even the acids in sweat can dull that luster over time. None of this makes them a bad choice — it just means a pearl is a stone you wear thoughtfully rather than one you forget you have on.
Alexandrite: the color-changer that is almost always grown in a lab
Alexandrite is the showpiece of June, and the one with the most marketing myths attached. It is a rare, chromium-bearing variety of the mineral chrysoberyl, and its party trick is real: a good alexandrite looks green to bluish-green in daylight or fluorescent light, then shifts to red or purplish-red under warm incandescent light or candlelight. Gemologists call this the alexandrite effect, and it happens because trace chromium in the crystal absorbs light differently depending on the source. At 8.5 on the Mohs scale it is genuinely hard — harder than topaz and just under sapphire — so as a stone it holds up beautifully.
Here is the part many listings gloss over. Natural alexandrite is one of the rarest gems on earth. It was first found in Russia's Ural Mountains in the 1830s, those deposits were largely mined out by the late 1800s, and fine natural material is rarer than diamond, running into thousands of dollars per carat. So if an alexandrite ring is priced like normal jewelry, the stone is almost certainly lab-created. Lab-grown alexandrite has existed since the 1960s; it shares the exact chemistry, hardness, and color change of the natural stone, and only a gem lab can tell the two apart. That is not a scam — it is a legitimate, affordable way to own the color change. It only becomes a problem when a seller lets you assume it is natural. My rule is simple: if a color-changing June stone is affordable, assume it is lab-created, and buy from someone who says so plainly on the tag.
Moonstone: the glow that sits in between
Moonstone is the quiet favorite, and it is having a real moment in everyday jewelry. It is the best-known gem in the feldspar family, specifically a type of orthoclase, and its signature look has its own name: adularescence, the soft billowing light that seems to float just under the surface and drift as you tilt the stone. That glow is a structural trick, not a coating. As the stone forms, orthoclase and albite separate into ultra-thin alternating layers, and light bouncing between those layers scatters into that moonlit sheen.
On hardness, moonstone lands in the middle of the three at 6 to 6.5 — tougher than a pearl, softer than alexandrite. That is durable enough for a ring or pendant you wear regularly, but feldspar has good cleavage, which is a fancy way of saying a sharp knock in the wrong direction can chip it. Treat it as everyday-friendly with a little common sense, not as bulletproof.
Which June birthstone should you actually wear?
Since the whole point of a birthstone is to wear it, hardness is the honest deciding factor, and the three June stones spread neatly across the range. Pearl is the softest, so it shines in earrings, pendants, and pieces that do not take daily abuse against desks and doorframes. Moonstone in the middle is happy in a ring or bracelet you wear often, as long as you are not banging it around. Alexandrite is the most scratch-resistant of the three — the natural stone is a genuine splurge, while a disclosed lab-created alexandrite is the sensible way to get that color change into a ring you actually reach for.
Prefer to skip the debate and lean into June's most classic look? Our pearl jewelry collection is the easy starting point, with rings, hoops, and pendants built on durable settings rather than the delicate metal that makes traditional pearl pieces feel precious.
How to wear a soft stone every day
If you fall for pearl (most people do), a few habits keep it glowing for decades. The jewelry-world shorthand is "last on, first off": put your pearls on after your perfume, makeup, and hairspray, and take them off before you wash up. Beyond that:
- Keep them away from chemicals. Perfume, hairspray, lotion, and household cleaners all attack the nacre. Pearls and moonstone are porous enough to absorb what a diamond would just shrug off.
- Wipe after wearing. A quick pass with a soft, slightly damp cloth lifts off the day's sweat and skin oils before they can dull the surface.
- Store them separately. Harder stones and metal edges will scratch a pearl or a moonstone in a shared jewelry box. A soft pouch is enough.
- Never use an ultrasonic cleaner or steam on pearls or moonstone. The vibration and heat can crack them — save those tools for your harder stones.
Now the honest bridge to what I make. Real pearls, moonstone, and natural alexandrite are gentle-wear stones no matter how good the setting is, so I will not pretend a soft gem is suddenly shower-proof. But many people want the pearl look for a piece they never take off, and that is solvable. At Stylr, our everyday pearl-style pieces set a simulated (faux) pearl on a base of waterproof, tarnish-free 18k-gold-plated 316L stainless steel, so the metal survives showers, sweat, and daily life even though the pearl itself is an imitation. Two things I always say out loud, because an "honest materials" brand has to: it is 18k gold plated, not solid gold, and 316L stainless is a low-nickel-release alloy rather than truly nickel-free — it sheds so little nickel that most sensitive skin tolerates it, but "low release" is the accurate phrase, not "zero." For the full story on what plating is and how long it lasts, see my guide to gold-plated jewelry.
Pearl Stacker Ring
A dual gold band with an oval faux-pearl accent on an 18k-gold-plated 316L stainless steel base — waterproof and tarnish-free, made to stack and to stay on through showers and sweat.
Shop this ring →Frequently asked questions
What are the birthstones for June?
June has three birthstones: pearl, alexandrite, and moonstone. Pearl and moonstone have been on the modern American list since 1912, and alexandrite was added in 1952. June is one of only three months, along with August and December, that carries three official birthstones.
Which June birthstone is the most durable?
Alexandrite is by far the hardest at 8.5 on the Mohs scale, just under sapphire. Moonstone is moderate at 6 to 6.5, and pearl is the softest at roughly 2.5 to 4.5, which is why pearls scratch and need the most careful handling.
Is alexandrite jewelry real or lab-created?
Both exist, but almost all affordable alexandrite is lab-created. Natural alexandrite is rarer than diamond and can cost thousands of dollars per carat, so most alexandrite in everyday jewelry is synthetic. Lab-created alexandrite is chemically identical to the natural stone and shows the same color change, and a reputable seller will tell you which one you are buying.
How do I take care of a pearl?
Put pearls on last and take them off first, keep them away from perfume, hairspray, and cleaning chemicals, wipe them with a soft cloth after wearing, and store them separately so harder stones do not scratch them. Never clean pearls in an ultrasonic cleaner or with steam.
Can I wear a June birthstone in the shower?
Real pearls, moonstone, and natural alexandrite are best kept dry and handled gently. If you want the pearl look for daily and in-water wear, a simulated-pearl piece set on waterproof 18k-gold-plated stainless steel holds up to showers and sweat. Just remember the setting is plated rather than solid gold, and the pearl itself is an imitation.
The one rule that ties June's three stones together: match the stone to how you actually live, and treat the soft ones with a little care. If you enjoy learning the story behind a stone, see our guide to the meaning and symbolism of turquoise, and if you want to know what "waterproof" honestly does and does not mean on a piece of jewelry, read is waterproof jewelry real.
If you want to wear June’s stone rather than read about it, our Personalized Cross & Birthstone Necklace is made in a June version — 18k gold plating over a 316L stainless steel base, built for daily wear. The stones are cubic zirconia, not mined gems, and the product page says so.