Bright Heart cut Mexican Fire Opal 8ct , 14 Round shape White Swarovski crystals, each 0.3ct and 11 Marquoise White Swarovski crystals, each measured 0.4ct. That is total 12ct for this setting. Amazing clarity and shimmering facets. The item is plated with 18K white gold, it will not tarnish or wear off with normal use. Pendant measured 24mm width x 34mm length