CUBIC ZIRCONIA ACZ BCZ CZ CZB CCZ purple cubic zirconia brown cubic zirconia cubic zirconia blue cubic zirconia champagne coloured cubic zirconia CZK CZL CZN CZP CZR black cubic zirconia lime cubic zirconia dark green cubic zirconia pale green cubic zirconia red cubic zirconia CZS CZX GCZ WCZ LCZ salmon cubic zirconia pale blue cubic zirconia green cubic zirconia white cubic zirconia lavender cubic zirconia OCZ PCZ CZA CZM CZY/YCZ orange cubic zirconia pink cubic zirconia light blue cubic zirconia honey cubic zirconia yellow cubic zirconia TCZ light rose cubic zirconia Cubic zirconia is a man-made product Durability: With a hardness of 8½ and good with no natural counterpart. toughness (unless highly strained) cubic zirconia is CZ durable and suitable for use in jewellery. Name: Cubic refers to the crystal symmetry and zirconia is the chemical Special care: No composition (zirconium oxide). Cubic zirconia is not to be confused with the gemstone zircon. The only thing they have in common is that they both contain the element zirconium. Appearance: Virtually all colours. General: Cubic zirconia was originally created as a diamond simulant but has a much wider use today. The monthly production worldwide is estimated at 200 tons. BLACK CRYSTAL AND GREY CRYSTAL The crystal used by PANDORA is a Appearance: Black and grey. NCK manufactured glass-ceramic, a hybrid between a glass and a crystalline Durability: With a hardness of approximately 7 material. It has the homogeneous Mohs and good toughness, black and grey crystal colour distribution of glass combined are durable and suitable for use in jewellery. with the greater hardness, toughness NGY and thermal stability of certain Special care: No crystalline materials. SYNTHETIC RUBY In 1902 the French chemist Auguste Processing: Cutting and polishing only. Verneuil developed the Vernuil process (flame fusion method) in order to grow Durability: With a hardness of 9, ruby is harder SRU synthetic ruby. The method is still in than any other gemstone except diamond and this use today and is also used to grow in combination with excellent toughness makes it other synthetic stones. very durable and ideal for all types and styles of jewellery. Name: From Latin “ruber” (red). Special care: No Appearance: Red Sources: Grown in laboratories. General: Ruby is also found in nature and the word “synthetic” is used to differentiate it from natural occurring ruby. Synthetic ruby has essentially the same properties and chemical structure as naturally occurring ruby and strong magnification is usually required to distinguish between the two. SYNTHETIC SPINEL Synthetic spinel has been produced natural occurring spinel. Synthetic spinel has by the Verneuil process (flame fusion essentially the same properties and chemical SSB method) since about 1909. structure as its natural occurring counterpart. Name: Through french “spinelle” from Processing: Cutting and polishing only Latin “spinella” (little thorn) probably SSL a reference to the pointed ends of the Durability: With a hardness of 8 Mohs and good octahedral crystals. toughness synthetic spinel is suitable for all types of jewellery. Appearance: We use two different colours of synthetic spinel, a light blue and a dark Special care: No blue, but synthetic spinel is made in a wide variety of colours. Sources: Grown in laboratories. General: Spinel is also found in nature and the word “synthetic” is used to differentiate it from .