Details Gabriella Kiss 18k yellow gold & oval vibrant black opal ring, size 6 3/4. The stone measures approximately 3/8″ x 1/4" & is set in Gabriella's signature scalloped bezel. - black opal, 1.36ct - 18k yellow gold - size 6 3/4 Sizing This ring can be resized. Please allow 2 - 6 weeks. Inquire about sizing fee.