Mason Rings – 14k White Gold “Solid Back” Oval Simulated Blue Sapphire Mason Ring This large mason ring features the classic square and compass symbol on the onyx stone and the plum and trowel on the ring sides. Solid back ring means added comfort, 10.27 grams.Specifications: Comfortable solid back ring Classic Masonic symbols on ring sides and top Genuine black onyx stone 14k white gold