LIST OF STONES cognac colour diamond DN prehnite PR diamond D pyrite PY, MA heat enhanced black diamond DB quartzite QW amazonite AZ treated quartz RA amber AMB, R rhodolite RHL, RHG, RHP amethyst AM, AMP rock crystal RC, BK aquamarine AQ rose quartz RQ black onyx ON, O ruby RU black spinel SPB, ME sapphire SA black/white agate cameo CAM smoky quartz SQ blue topaz BTP, TPA smoky quartz/mother of pearl doublet P carnelian CAR, K tanzanite TZ chalcedony CA tourmalinated quartz BRU chrysoprase CH treated quartz RA citrine CI, CIG, CIC, CIY treated topaz, paraiba blue TPP cognac quartz CQ treated topaz, pink TPK garnet GR, GA treated pink sapphire PSA green quartz GQ, GAM turquoise TQ grey moonstone MSG whisky quartz WQ, BQ hematite HEM white agate AGW iolite IO, IOB white opal WOP labradorite LBG black crystal NCK lapis lazuli LP, L black cubic zirconia CZK lemon quartz LQ blue cubic zirconia CZB light colour amethyst PAM brown cubic zirconia BCZ moonstone MS champagne coloured cubic zirconia CCZ nephrite-jade NJA cubic zirconia CZ orange moonstone MSO dark blue synthetic spinel SSB peridot PE, PEA dark green cubic zirconia CZN pink opal POP green cubic zirconia GCZ pink rock PRO, RNI grey crystal NGY pink sapphire PSA honey cubic zirconia CZM pink tourmaline TU lavender cubic zirconia LCZ light blue cubic zirconia CZA copper coloured cultured pearl PRC, RRC light blue synthetic spinel SSL golden mabe cultured pearl PGO light rose cubic zirconia TCZ green cultured pearl PG lime cubic zirkonia CZL grey faceted cultured pearl PSG orange cubic zirconia OCZ grey cultured pearl GP pale blue cubic zirkonia CZX lavender coloured cultured pearl PLA, PLC pale green cubic zirconia CZP light green cultured pearl PLG pink cubic zirconia PCZ lime coloured cultured pearl PL purple cubic zirconia ACZ mother of pearl MOP, MP red cubic zirconia CZR olive coloured cultured pearl POL salmon cubic zirconia CZS pale green cultured pearl GRP synthetic ruby SRU pale purple cultured pearl PLP white cubic zirconia WCZ peacock coloured cultured pearl PPC yellow cubic zirconia CZY, YCZ pink cultured pearl PP black cultured pearl BP red cultured pearl RP black mother of pearl MPB rose coloured cultured pearl PNP, NP blue mabe cultured pearl PBL salmon coloured cultured pearl PSM brown faceted cultured pearl PCO teal coloured cultured pearl TP brown cultured pearl PB treated pink shell PS carved mother of pearl MOP turquoise cultured pearl PTL champagne coloured cultured pearl PCH watermelon coloured cultured pearl PLW, PW cherry coloured cultured pearl PPL white cultured pearl P chocolate coloured cultured pearl PCL white mother of pearl MPW.