This is an extremely rare diamond. Earth mined, or lab grown.
The cut - step cuts in general - are not designed to amplify color. Normally, cutters will add the facets to make a stone like this into a square radiant.
This particular example is just amazing.
It's got all the charm of transparency to allow the steps to be clearly visible.
Yet the color screams "Canary!!"
It is a pleasure to behold.
It is definitely not the least expensive 3ct Lab Diamond. The value is there for an Asscher lover.
