Ethically created & conflict-free · Certified & documented · By private appointment — Orange County, CaliforniaEthically created & conflict-free
Why Us
Beautiful, ethically created, certified fine jewelry — designed to be worn every day and priced to make sense. Here's what sets us apart, and the remarkable stone that makes it all possible.
The Difference
I
Colorless, ideal-cut, eye-flawless. We set one standard for every piece, and we never quietly lower it.
II
Every stone is created in a laboratory — conflict-free by nature, certified, and far kinder to the earth.
III
The same craftsmanship as any fine house. You pay for the piece — never an inflated markup.
IV
Each piece is hand-inspected and arrives with a certificate of authenticity, so you know exactly what you own.
V
Hard-wearing enough to live in, and beautiful enough for the occasions — fine jewelry meant to be kept.
VI
Hand-inspected, beautifully packaged, and a private Orange County atelier that answers when you reach out.
The Stone
We set moissanite — a brilliant modern gemstone, beautifully clear and hard enough to wear for a lifetime, with a fire all its own. Created in a laboratory rather than mined, and held to the highest grade. Here's what that means.
Moissanite returns light with a fire all its own — the flashes of rainbow color you catch when your hand moves. It’s a vivid, lively brilliance that has become the signature of the stone.
The colorless D–F grade we set is beautifully clear and white, luminous from every angle. No tint, no cloudiness — just clean, brilliant light.
Moissanite is a true, certified gemstone — silicon carbide, one of the hardest minerals on earth. Not glass, not cubic zirconia: the real thing, in its own right.
At 9.25 on the Mohs scale, moissanite is among the hardest gems on earth — built to be worn every day, for a lifetime.
Every stone is lab-created and conflict-free. No mines, no ambiguity about origin — beauty you can feel entirely good about.
Lab creation means no mining, minimal land disturbance, and a fraction of the environmental footprint of an extracted stone.
Materials & Craft
Every Sempre piece is crafted in 925 sterling silver and set with hand-cut moissanite — a true precious metal and a true gemstone, never costume or base metal. Each stone is hand-placed and every piece hand-inspected before it ships.
A genuine precious metal, substantial and made to last — the standard for fine silver jewelry.
Colorless, ideal-cut stones, each placed by hand to return the most light.
Bright silver, or finished in warm 18k yellow or rose gold on select styles.
Our Standard
Across every dimension that defines a stone, we choose the top of the scale — and nothing below it. This is what “highest quality” actually means at Sempre.
Precision-cut for maximum return of light.
Only the colorless range — bright, icy white.
Eye-flawless, with exceptional transparency.
Exceptional fire and brilliance — flashes of rainbow color in the light.
A Word on Quality
Much of the moissanite sold online is exactly what it costs. We hold every stone — and every setting — to a different standard.
Much of what's sold online
Every Sempre piece
The Value
See our price beside the same piece set in a natural diamond at a traditional jeweler. The craftsmanship and quality are identical — the difference is simply the stone.
Comparable natural diamond, elsewhere
~$7,900
Traditional jeweler, equivalent piece
At Sempre
$499
Certified · the same craftsmanship
The metal, the setting, the exacting standard — all identical. The only difference is the stone, and that is the only reason for the difference in price.
Side by Side
Swipe to compare →
Good to Know
Yes. Moissanite is a genuine gemstone — silicon carbide, one of the hardest minerals on earth. It's a certified stone in its own right, never glass or cubic zirconia.
Beautifully. At 9.25 on the Mohs hardness scale, moissanite is second only to diamond and is entirely suited to everyday wear, for a lifetime — including engagement rings.
No, and we never pretend it is. Moissanite is its own stone, with a brilliance and lively fire all its own — set in real 925 sterling silver, to the same fine standard as any jeweler.
Reach out to our concierge and we'll work with you on a return or exchange to make it right.
More questions? See the full FAQ or ask our concierge.
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