Details Lola Brooks 18k yellow gold & elongated oval blue green tourmaline ring, size 8. The 12.73ct stone measures approximately 3/4″ x 3/8″ & is set in an 18k yellow gold band that tapers from approximately 1/8″ to 1/16″. - blue green tourmaline, 12.73ct - 18k yellow gold - size 8 Sizing This ring can be resized. Please allow 4 - 6 weeks. Inquire about sizing fee.