Antwerp Diamond District
A five-century global hub for diamond trade, precision cutting, and trusted certification.
A taste of every district
A short, curated shelf for each district — the pieces it actually trades, sourced on Amazon so a taste of the trade can travel home.
What stone is this?
Point your phone at any gemstone and the identifier reads the photo, then names the gem types it most resembles — ranked by likeness, each with the one test that sets it apart from the others.
Built to turn “I have no idea” into “here’s what to ask about” — a fast, confident first read before you ever reach a jeweller’s counter.
Transparent, saturated blue, faceted cushion
How to tell them apart — check for pleochroism — tanzanite flashes violet and blue from different angles; sapphire holds its colour.
Sample read · your own photo returns a live result.
A sapphire, a tanzanite and blue glass can look identical in a photograph.
Identity is measured, not glanced at.
Every piece is signed
The word hallmarkcomes from Goldsmiths’ Hall in London, 1300. Read the tiny stamps struck into precious metal — and what each one promises.
Leopard's Head
London Assay Office
Anchor
Birmingham Assay Office
Rose
Sheffield Assay Office
Three-towered Castle
Edinburgh Assay Office
Lion Passant
Sterling silver (925)
The word hallmark is seven centuries old — struck at Goldsmiths' Hall in London since 1300.
Long before the printing press, a stamp was a promise.
Practical jewellery guides
Birthstones & Their Meanings: A Complete Month-by-Month Guide
Celebrity Jewellery Moments You Can Copy for Less (2025)
Everyday Jewellery Essentials for Men (From Minimalist to Statement)
How to Choose a Reputable Jeweller (Checklist + Red Flags)
Buy the stone, not the story.
Everything else, you can verify.
Tools & reference for the curious owner
Hallmark Translator
Decode the tiny stamps struck inside a piece — the metal, its fineness, the assay office and the year it was marked.
LearnThe Field Guide
Plain-English explainers for the terms you’ll meet — the 4Cs, precious metals, hallmarks and jewellery care.
19 districts · 15 countries · 10 guides