Bonas Group is the world’s leading independent diamond and gemstone tender and auction house. Bonas runs cut and polished gemstone sales for private vendors and rough gemstone tenders for both large and small independent miners.
Upcoming events
13 > 16 July 2026
Tutti Frutti July 2026 - CLOSING 1
Mozambican Rough Rubies
Viewing location: Bangkok
TFI2601
Tender closing 5pm (Asia/Bangkok)
13 > 16 July 2026
Tutti Frutti July 2026 - CLOSING 2
Tourmaline & Others
Viewing location: Bangkok
TFI-2601
Tender closing 5.45pm (Asia/Bangkok)
13 > 16 July 2026
Tutti Frutti July 2026 - CLOSING 3
Mozambican Paraiba Tourmaline
Viewing location: Bangkok
TFI2601
Tender closing 6.30pm (Asia/Bangkok)