Chrome Diopside Band Ring 3x5mm Natural Chrome Diopside Ring Sterling Silver. This ring contains natural Chrome Diopside gemstones measuring 3x5mm. This ring is 925 sterling silver and available in the following color options: Platinum Plated (Silver), Gold, and Rose Gold Plating. This item includes a velvet gift box and a certificate of authenticity with purchase. This item is made to order, please allow up to 10-15 days for processing and delivery of this item.