A captivating green tourmalinated quartz in an oval cabochon cut, measuring 21mm x 13mm and weighing 16.25 carats. Tourmalinated quartz is a natural phenomenon where needle-like tourmaline crystals are trapped within clear or tinted quartz during formation, creating a striking inclusion pattern unique to each stone. This large oval cabochon displays a beautiful green tint with distinctive tourmaline needles throughout — a collector's gem and a conversation piece for bespoke jewellery.