Trans Atlantic Gems Sales Rough Diamonds Tender The Trans Atlantic Gems Sales rough diamond tender will take place at the state-of-the-art DDE tender facility from 29 March - 4 April 2023. Viewings available from 9:00am to 6:00pm. Book your place now! bookings@transatlanticgemsales.com Event details Where DDE Trading Floor, Level 2, Almas Tower When 9:00AM - 6:00PM, 29 - 4 Apr 2023