Bonas Diamond Tender

Invested in a diamond jewel? Inherited a beautiful family heirloom? Or planning to go “ring shopping” soon in the diamond city of Antwerp?

Don’t be misled. Come and have your diamond jewel tested for free and find out whether you own a natural or a synthetic diamond!

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When: March 2 - 12, 2026, 09:00 am - 06:00 pm
Company: Bonas-Couzyn
Origin: Mountain Province, Canada
Type: Rough Diamonds

Antwerp viewings 

Closing: 12 March 2026 3pm

When: March 2 - 13, 2026, 09:00 am - 06:00 pm
Company: Bonas-Couzyn
Origin: Ekati, Canada
Type: Rough Diamonds

Antwerp viewings 

Closing: 13 March 2026 3pm

When: 12 - 18 March 2026

Company: Rio Tinto Diamonds

Type: rough diamonds

Auction: 19 March 2026

When: March 16 - 23, 2026, 09:00 am - 06:00 pm
Company: Bonas-Couzyn
Origin: Petra Diamonds, South Africa
Type: Rough Diamonds

Antwerp viewings 

Closing: 23 March 2026 11am