Scintessa
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Scintessa

A diamond & gemstone auction house. Certified stones, sourced at wholesale, opened to bid — brilliance, within reach.

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Scintessa

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© 2026 Scintessa. A trading name of Xzist Assets Ltd, registered in England & Wales.

Precious-metal articles are hallmarked in accordance with the Hallmarking Act 1973; our Dealer’s Notice is displayed in the terms. Diamonds and gemstones are certified by independent laboratories.

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A brilliant-cut diamond, high-key on a pale ground

Brilliance,
within reach.

Certified diamonds and gemstones, brought to auction — and open to anyone with an eye for them.

Register to bidBrowse the catalogue
A certified stone held in the loupe's light
The Scintessa difference

Where the great houses trade in exclusivity, Scintessa trades in access — the sparkle, not the gatekeeping.

Every stone is certified by GIA, IGI or an equivalent laboratory, sourced at wholesale, and opened to bid. You pay the market’s real price plus our premium — still, always, well under retail.

How it works →
Why Scintessa

Bought with confidence

Certified & described

Every diamond carries an independent laboratory report — GIA or IGI. Each lot states its certifying laboratory, and says so plainly where a stone is uncertified. What you bid on is exactly what arrives.

Secure bidding

Proxy bidding, anti-sniping soft-close and verified bidders only — a fair, transparent close, every time.

Insured delivery

Won lots ship fully insured, tracked and signed-for, settled by secure bank transfer within 24 hours.

Simple by design

How it works

Step one

Register & verify

Create an account and complete a brief verification. Approval to bid is quick and one-time.

Step two

Explore the stones

Browse each certified lot — full specification, laboratory report and imagery, with the all-in price shown up front.

Step three

Place your bid

Set a maximum and let us bid for you in increments. Anti-sniping keeps every close fair.

Step four

Won & delivered

Settle by secure bank transfer within 24 hours; your stone arrives fully insured and tracked.

A single brilliant, bright on a pale ground
Register to bid

Brilliance, within reach.

The next sale is open. Join Scintessa and bid on certified stones at wholesale.

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