“Trellis” featuring pillow-cut 10.66 carat brilliant Blue Topaz set in 18 karat white gold basket with 18 karat yellow gold shank. by Ely Urbanski | Jul 7, 2021 "Trellis” featuring pillow-cut 10.66 carat brilliant Blue Topaz set in 18 karat white gold basket with 18 karat yellow gold shank.