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Bonas to hold polished coloured gems tender

17 January 2019


International diamond broker Bonas is holding a polished coloured gemstone tender from February 18 to 22 in Bangkok. The sale will include a wide selection of of sapphires, rubies, emeralds and other gems.

Organised with the support of the Asia Gem Center, the tender will be held at the Jewelry Trade Center (JTC) and coincide with the Bangkok Gems & Jewelry Fair.

Approximately 400 lots of yellow, star blue, pink, blue and star sapphires; rubies and star rubies; emeralds; and aquamarine, alexandrite and cat’s eye stones will be featured in the sale. The stones are open for viewing at the JTC from 10am until 6pm. The sale will close on February 26 at 11am Antwerp (CET) time and will be an online highest bid tender via

Backed by more than 140 years of experience in diamond brokerage and consultancy, Bonas typically organises rough diamond sales and provides a variety of consulting services throughout the diamond pipeline.