Pictured: Colorful Gemstone Delight Ring

The May birthstone is Emerald, a green stone associated with rebirth, growth, and renewal. It rates 7.5 to 8 on the Mohs hardness scale, which is the number that actually decides whether you can wear it every day.

What Emerald means

Emerald has long been linked to rebirth, growth, and renewal. Emerald reads hard on paper but is brittle in practice: most stones contain inclusions that make them prone to chipping. It is a poor choice for a ring worn every day.

May birthstone at a glance

Featured piece Colorful Gemstone Delight Ring Waterproof, tarnish free, and hypoallergenic. Built on 18K gold plated surgical stainless steel. Shop this piece →

Buying May birthstone jewelry at Costco and other warehouse clubs

Costco does sell genuine fine jewelry, including birthstone pieces, and its pricing is usually competitive because margins are thin and volume is high. Diamonds are commonly certified, and the return policy is unusually generous. Those are real advantages if you are buying a significant piece.

The trade-offs are equally real. Selection is limited and rotates with stock rather than being a permanent catalogue, so a specific Emerald piece may or may not be there when you look, and a membership is required. Timing matters too: May is peak Mother's Day season, the busiest jewelry month outside December. Shop early or late, not during.

What actually matters for a piece you wear daily

At 7.5 to 8 on the Mohs scale, Emerald is hard enough to survive daily wear, including in a ring where knocks are frequent. Never ultrasonic clean. Most emeralds are oiled and cleaning strips the treatment.

The other half of the equation is the metal. A genuine stone set into plated brass will outlive its setting: the plating wears, the base reacts with skin, and you end up with a good stone in a piece you have stopped wearing. Whatever stone you choose, the setting decides how long you actually wear it.

The everyday alternative

If what you want is the colour and the meaning rather than the carat weight, look for emerald green stone pieces set on a non reactive base. Same look, none of the fragility or the price. That standard is what Ezra Gems is built around: hypoallergenic, waterproof, tarnish-free pieces designed for women who put jewelry on and forget about it. Nothing needs removing before a shower, and nothing tarnishes underneath.

Where That Leaves You

May is Emerald: green, 7.5 to 8 on the Mohs scale, and linked to rebirth, growth, and renewal. Buy the stone for the meaning, but judge the setting on whether it will survive being worn. Shop Birthstone Jewelry.

Keep Reading

• April Birthstone: Diamond Meaning, and Where to Buy It
• March Birthstone: Aquamarine Meaning, and Where to Buy It
• February Birthstone: Amethyst Meaning, and Where to Buy It

Frequently Asked Questions

What is the May birthstone?

The May birthstone is Emerald.

Can you wear Emerald every day?

It depends on hardness. Check the Mohs rating in the table above: stones at 7.5 and higher handle daily rings well, softer stones are better in earrings or pendants where they take fewer knocks.

Is Costco a good place to buy birthstone jewelry?

Costco sells genuine fine jewelry at competitive prices with a generous return policy, which suits milestone purchases. Selection is limited and rotates, and a membership is required, so it is less useful for a specific piece you want on demand.

Is Ezra Gems jewelry really waterproof?

Yes. Every piece is 18K gold plated over surgical stainless steel, a non reactive base that does not corrode in water, chlorine, or salt. You can shower, swim, sweat, and sleep in it.

Will it turn my skin green?

No. There is no copper or brass touching your skin, only surgical stainless steel under the gold plating, so it will not leave green marks or discoloration.

Is it hypoallergenic and nickel free?

Yes. Every piece is nickel free and free of lead and cadmium, made for sensitive skin and ears that react to ordinary gold tone jewelry.

For limited release designs before they sell out, Exclusive Drops is where the newest pieces land first. To shop the pieces in this guide, browse Birthstone Jewelry.