River Gemz is a small family-operated business located in the heart of beautiful Mannum. With over 30 years of experience in the opal industry, River Gemz personnel have the specialist expertise to present quality cut stones and jewellery made from genuine Australian Opals.
River Gemz products are all hand-crafted. Guests can purchase jewellery and unset opals; receive 1-1 lapidary advice; or observe the cutting and polishing process occurring in the workshop.