Trans Atlantic Gems Sales Rough Diamond Tender The Trans Atlantic Gems Sales rough diamond tender will take place at the state-of-the-art DDE tender facility from 3 - 8 May 2023. Viewings available from 9:00am to 5:00pm. Book your place now! bookings@transatlanticgemsales.com Event details Where DDE Trading Floor, Level 2, Almas Tower When 9:00AM - 5:00PM, May 8 2023