Crystal systems
Crystals are divided into seven crystal systems (six for the USA) according to their optical properties and their basic crystal structure. The seven crystal systems are: cubic tetragonal, hexagonal, trigonal (these last two are merged to one in the USA), orthorhombic, monoclinic and triclinic systems.
Terms with the same letter
Cabinet Cabinotier Cabochon Calibrated Calibre calibre-cut Cam Canary diamond Cannon pinion Carat Carbonado Case Case Case middle Case up Case-fitter Casing ring Catch Century leap year Ceramic Chablon Chamfer (Bevel) Champlevé(e) Chimes Chip Chronocomparator Chronofiable Chronograph Chronometer (general definition) Chronostop Chuck CIBJO Clarity Cleavage Clepsydra Clock Cloisonné Cloud Clous de Paris Clutch Coaxial Colour Column wheel Combo Combustion clock Common year Compensation Complication Contrôle Officiel Suisse des Chronomètres Copper-plate Coral Corrector Corundum COSC (Contrôle officiel suisse des chronomètres) Côtes or vagues de Genève Count wheel (Locking plate) Countdown timer Counter Crown (jewellery) Crown (watchmaking) Crystal Crystal Crystal habit Crystal systems Cubic zirconium Culet Cultured pearl Cushion cut Cut Cuvette Cycloid
