Rock & Gemstone Shop is a family-owned gemstone and crystal shop at 1120 Eruera Street in central Rotorua. The shop says it has been in business since 1981 and is one of the oldest crystal shops in New Zealand, still run by its founder, Colin Simmons. It sells gemstones, crystals, lapidary equipment and tumbling supplies. It says it is New Zealand's only licensed Covington and Lortone lapidary agent, and has been the Lortone tumbler agent for more than 40 years.
Products on the website include tumblers, grit and barrels, a stainless steel shot mix for burnishing metal, diamond grinding pads and a Foredom carving machine. Customers can order online or click and collect in store, and the website lists flat-rate shipping across New Zealand. One customer who tumbles stones says barrels and grit arrive promptly.