Big Flat Back Triangle Acrylic Rhinestones are 68mm or 2-43/64 in diameter. Allstarco 68mm Blue Sapphire H104 Flat Back Extra ) and used as body gems! Professional grade for jewelry making, fabric embellishments, and commercial displays., Add your own glue. Since they lead free they are 100% safe for skin and can be used as body gems., Lead Free. Great for cosplay bling / embelishments! Domestic made high quality gemstones are also highly suited for apparel and accessories manufacturing. Suitable for party supplies, props, and theatrical performances., 100% Satisfaction Guaranteed! Perfect for jewelry making, fabric embellishments. 2 Pieces of Big Flat Back Triangle Acrylic Rhinestones are 68mm or 2-43/64 diameter. 2 Pieces of Big Pink Flat Back Diamond (Rhombus) Acrylic Rhinestones are 67x48mm or 2 1/2 x just under 2 diameter. They are lead free (safe for skin! My Epic Blue Diamond Steven Universe Cosplay Journey: A Thread on r/CosplayCommunity