Hi all!

This is a very interesting question!

First of all, the chances are that whoever is offering a "natural green diamond" is lying.
I mean there's a remote possibility it's a natural piece of green rough- but if it was it would be millions of dollars, and never be offered outside the highest levels of the trade.

Green diamonds are as rare as blue or pink- so that kind of tells us a lot about the offer saqsay saw specifically.

In general: buying rough diamonds for the purpose of re-cutting is one of the most difficult aspects of the diamond business.
There's many reasons.
For one thing, rough is sold in bulk. Generally the miners package a grouping of stones. They evaluate the rough- but there's a large element of uncertainty.
Say it's high white rough in larger sizes.
One piece that cost $10,000 might polish into a $100,000 polished diamond.
Or a feather which was invisible in the rough makes it an I1 worth $8000.

Rough diamonds generally have a frosted skin- you can't see all the details inside.
The miners leave it that way- it's possible to polish a small window into the skin- then it's a lot easier to evaluate what you've got. But that one little window completely changes the deal. Now the miner will "pre-grade" the diamond - which will affect the price ( make it higher)
So, the best cutters use intuition and basically buy blind- that's the only way to buy the rough cheap enough to be profitable.

We bought a piece of rough last month.
It was destroyed on the wheel- broke in two. This also happens.


Regardless, we're still going to be offering rough stones and the services of our cutters to people who want them

Here's a peice of rough we have now- although I don;t believe this is a good candidate for cutting.

Most rough diamonds with green lose the green due to the heat caused from the cutting process.  Where were you planning on purchasing a rough diamond from???