NATURAL STONES
NQTC carries out the international ISO/EC17025 standard, carries on the quality management comprehensively, has established the scientific, the perfect management System, in strict accordance with international standards for gold, silver, jewelry and jade jewelry inspection/inspection/appraisal business.
SERVICE PROJECT:
Diamond, Ruby, Sapphire, Chrysoberyl, Cat's Eye Stone, Stone, Change The Cat's Eye, Beryl, Emeralds, Aquamarine, Tourmaline, Spinel, Zircon, Topaz, Peridot, Garnet, Pyrope, Almandine And Spessartine, Grossular Andradite Garnet, Black, Green Garnet, The Uvarovite Crystal, Crystal, Amethyst, Topaz, Smoke, Green Crystal, Furong Stone, Development, Feldspar, Moonstone, Amazonite, Sun Stone, Feldspar, Scapolite, Column SPAR, Zoisite, Tanzania Stone, Epidote, Cordierite, Sphene, Apatite, Pyroxene, Diopside, Dense Fire Pyroxene, Augite, Spodumene, Andalusite, Empty Crystal Stone, Siliconite, Bluestone, Azure Stone, Fusanite, Borosite, Magnesite, Taphite, Blue Cone Ore, Barite, Lapis Lazuli, Calcite, Iceland SPAR, Axalite, Cassiterite, Phosphoaluminite, Perspective Stone, Azurite, Phosphoaluminite, Zephyrite, Silberyllium. And So On;