Gem & Jewellery Cleaner Concentrate 240ml Gem and Jewellery Cleaner Concentrate is a concentrated liquid that you mix with water to clean jewellery in jewellery cleaning machines and ultrasonic jewellery cleaning machines.This special, non-toxic jewellery cleaner concentrate is for all types of cleaning machines! There are easy to use directions and a small amount will give you numerous uses.Try an 240ml.bottle today, or the goliath 3.8l bottle.Safe, non-toxic.this stuff works well as a refill for almost any jewellery cleaning machine.The advantages of this product are entirely up to you.This clear concentrate has a pleasant odour and smell, and won't harm your eyes, hands, body or pets! It can be used as a dip, in a machine, a spray bottle, and it can even remove some stains from clothing! Use this cleaner on gold, platinum, diamond, ruby, sapphire, topaz, amethyst, aquamarine, garnet, peridot and other non-porous precious and semi-precious gem jewellery!