Deactivated listings › Mexican Fire Opal Fine Silver Ring Size 7.75 Image 1 of 1 Mexican Fire Opal Fine Silver Ring Size 7.75 $210.00 Sold Out Bright Mexican fire opal set in fine silver. Size 7.75Measures 12mm x 8mm Sold Out Added! Bright Mexican fire opal set in fine silver. Size 7.75Measures 12mm x 8mm