Optimineral is a Canadian-based engineering firm based in Ontario, Canada. Optimineral Resources And Engineering Service is a engaged in developing privately held mineral properties in Canada and abroad. Products under investigation and production include: Chromite, copper, placer gold, phosphate, lead-zinc, decorative stone (granite, marble and onyx) and gemstones including corundum (Heat-treatment to create rubies and sapphires), emerald, jade, tourmaline, peridote and aquamarine.