This is a beautiful round brilliant-cut zircon that was mined in Sri Lanka (Ceylon). It has only been heated, no unusual treatments like fissure-filling or chemicals. The color is vivid orange and it is extremely brilliant with outstanding light return. This zircon weighs .63 carats and measures 4.73 x 3.18mm deep. This is an extremely clean stone with a VVS (very very slightly included) clarity grade.
http://bitmit.net/en/trade/i/2041-100-natural-orange-zircon-mined-in-sri-lanka-63-carats-round/description
I only make promo for this item. I am not the seller.