Details Gabriella Kiss 18k yellow gold & natural tanzanite crystal ring, size 6 3/4. The 4.31ct stone measures approximately 1/2"x 1/4" & is set in Gabriella's signature fine bezel setting. - tanzanite, 4.31ct - 18k yellow gold - size 6 3/4 Sizing This ring can be resized. Please allow 2 - 6 weeks. Inquire about sizing fee.