Conch pearls
Gemstones.
Semi precious stones.Extraction and marketing
Jadeite Jade..
Ruby, sapphire, emerald, spinel, tourmaline, opal, aquamarine, chrysoberyl, alexandrite, cats eye, zircon, garnet, hessonite garnet, amethyst, tanzanite, green garnet (savourite), peridot, quartz, beryls, green beryl.