Natural Chalcedony Cubic Zirconia Fashion Ring 3.35ct in 925 Sterling Silver. PICTURE & VIDEO IS THE ACTUAL ITEM FOR SALE. Metal Type: 925 Solid Sterling Silver With Rhodium Plating Ring Size: 8 US Weight: 7.72g. Main Stone: Natural Chalcedony Weight/Size: 6.25 Carat.13.5 x 12.0mm Approx. Color: Green Treatment: Unheated Untreated Origin: Africa Side Stone Type: Cubic Zirconia 28pcs 1.5-2.0mm Color: White. These gems have microscopic inclusions which are difficult to slightly difficult to see under a loupe with 10x magnification. Small pin-pricks are just visible to the scrutiny of the close naked eye. However, the beauty of the gem is not diminished in anyway. Small pin-pricks and feathers are just visible to the scrutiny of the close naked eye. However, the overall beauty of the gem is still not diminished. These gems have inclusions which are fairly easy to see to the close naked eye. However, the overall beauty of the gem is still high. Included 1, 2 & 3. These gems have inclusions which are fairly easy to see under the close naked eye. These inclusions are usually not really visible at an arm's length. Medium to the lower qualities. Included gems with internal features that range from eye visible to very easily seen to the naked eye. Powered by SixBit's eCommerce Solution.