About Us

Onegem is the online marketplace dedicated to diamonds and natural gemstones with a gemological certificate from a trusted institution, registered with CIBJIO.
The sale is reserved exclusively to authorized specialized companies.
Actually, private users can only buy.

Onegem is a property of
Boutique del Gioiello srl
Piazza Santa Maria Beltrade 2
20123 Milano
VAT N. IT06093180153

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