Details Gabriella Kiss 18k yellow gold & small hexagonal green tourmaline ring, size 6 3/4. The .5ct stone measures approximately 3/16" x 1/4" & is set in Gabriella's signature fine bezel setting. - Tourmaline, .50ct - 18k yellow gold - size 6 3/4 Sizing This ring can be resized. Please allow 2 - 6 weeks. Inquire about sizing fee.