rhinestone

noun rhinestone

• allotrope — any of two or more physical forms in which an element can exist
• bort — an inferior grade of diamond used for cutting and drilling or, in powdered form, as an industrial abrasive
• corundum — a white, grey, blue, green, red, yellow, or brown mineral, found in metamorphosed shales and limestones, in veins, and in some igneous rocks. It is used as an abrasive and as gemstone; the red variety is ruby, the blue is sapphire. Composition: aluminium oxide. Formula: Al2O3. Crystal structure: hexagonal (rhombohedral)
• diamond — A diamond is a hard, bright, precious stone which is clear and colourless. Diamonds are used in jewellery and for cutting very hard substances.
• jager — any of several rapacious seabirds of the family Stercorariidae that pursue weaker birds to make them drop their prey.