ss42 Rhinestones Gem Crystal Flat Back Color Mix Made in Austria by Swarovski Swarovski Austrian Crystal Rhinestone Color Mix. Stone Size: ss42 / 9mm Quantity per pack: 30 pieces. Assorted, random color mix as shown in picture. No guarantee of exact color mix or amount of each color. Perfect for jewelry, decorations, collage art, polymer pieces, craft embellishment. Foiled back for intense reflection and sparkle. Flat for gluing or setting.