It is a very common treatment for gemstones. The Ruby has a calibrated size of 5.5 mm which is perfect for standard jewelry settings. 5.49 x 3.86 mm.
This item is in the category "Jewelry & Watches\Loose Diamonds & Gemstones\Loose Gemstones". The seller is "glassesbrille*com" and is located in this country: RS.This item can be shipped worldwide.