Style Number: SGA6131 This black wedding ring is inspired by the beautiful Capricornus Nebula pictured above. Purple and blue alexandrite resemble the purple gas of the Capricornus Nebula in the Sea of Stars.Alexandrite is a gem of luck, prosperity, and wisdom. It represents the balance between your physical and spiritual realms. In a sense, alexandrite represents balancing who you are.Your Nebula inlay is protected with a marine-grade coating to keep water and dirt out.With incredible scratch resistance, your tungsten tape is 4 times harder than titanium, 5 times harder than steel, and 10 times harder than gold. Its hardness is second only to diamond. Tungsten will always retain its luster, beauty, and shape. Its eternal power is the perfect symbol of eternal love. Ring Detail: Materials: Tungsten Carbide， Purple and Blue Alexandrites 4 mm, 8mm Wide Comfortable Fit Lifetime Limited Warranty Return Policy Each Ring Includes: Saga Bands Silicone Ring Set Saga Bands wooden ring box