Diamond Collection
The clearest expression of light.
A private atelier devoted to the rarest stones on earth — set by hand, measured in light, made to be inherited.

Karat-Boutique is a luxury gemstone and jewelry brand dedicated to timeless elegance, premium craftsmanship, and carefully selected precious stones.
Every piece begins with a single decision — a stone we cannot walk away from. From there, our atelier shapes a setting around it, never the other way around.
Discover the MaisonEach collection is a study in a single stone — its temperament, its history, its light.
The clearest expression of light.
Royal blues, deep as midnight oceans.
Green fire from the heart of Colombia.
Pigeon-blood reds, untouched and rare.
Bespoke settings for once-in-a-life moments.
Strands shaped to flatter every silhouette.
Every piece is hand-finished by master jewelers with decades of training.
Stones traced from mine to setting — beautifully, responsibly.
Silhouettes built to outlast trend cycles and stay heirlooms.
Private salons in Paris, Geneva, Dubai, Tokyo and New York.





"The sapphire I commissioned through Karat is unlike anything I've seen at the great houses. They took the time."
"There is a quietness to their craftsmanship that I deeply respect. This is jewelry made the old way."
"From the first appointment to the final fitting, every detail felt considered. A truly exceptional house."
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