Why should I use Connoisseurs Delicate Jewellery Cleaner on semi-precious, soft gem stones

For softer gem stones and other materials, such as opals, onyx, turquoise, mother of pearl and coral we recommend using our Connoisseurs Delicate Jewellery Cleaner because of their porous nature they require a gentler formulation. Do not use ultrasonic machines on these delicate stones.

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