385 New Ladies Mineral Watch Crystals & Hypo Cement. This is a new set of 384 ladies flat mineral watch crystals in 32 different sizes. Each flat natural mineral watch crystal is 1 mm thick. You receive twelve of each size: 18, 18.25, 18.5, 18.75, 19, 19.25, 19.5, 19.75, 20, 20.25, 20.5, 20.75, 21, 21.25, 21.5, 21.75, 22, 22.25, 22.5, 22.75, 23, 23.25, 23.5, 23.75, 24, 24.25, 24.5, 24.75, 25, 25.25, 25.5, and 25.75 mm G-S Hypo Cement. This is a new tube of G-S hypo cement. This adhesive is great for knotting between beads. It will keep knots from fraying. Excellent for jewelry making and beading. The precision applicator allows for precise amounts of cement to be applied to intricate parts for neat and precise work. It contains 1/3 oz.