49ct. Yellow Fancy Rough Diamond

[CaliCali]

 

[OoohShiny]

How have you determined it is diamond?

 

[Bron357]

Hmmmmm. Even if it were a diamond (most unlikely given its shape and “natural” ? finish) it’s highly flawed and would only be suitable as a specimen.

 

[CaliCali]

 

[OoohShiny]

Still doesn't look like a diamond.

 

[CaliCali]

Full of pyramids. No?

 

[dk168]

Not convinced it is a diamond, sorry.

DK

 

[OoohShiny]

Full of pyramids. No?

No.

 

[Acinom]

Full of pyramids. No?

No...

 

[Bron357]

The pyramid shape on diamond crystals are called trigons. They are very distinctive. They are most easily seen on the raw surface of a natural diamond.
Your Gem has completely smooth surfaces ie polished. Diamond is the hardest material, abrasion wise, on earth. It cannot be made completely smooth like that in a “natural or raw” state even with billions of years of weathering.
Your gem has all the characteristics of quartz.
Photos of trigons on a diamond crystal and a photo of my raw quartz specimen.

 

[CaliCali]

like this?

 

[Arcadian]

That totally looks like quartz. Only reason why I think so is because I collected PLENTY of these as a kid (still have some!!)

 

[OoohShiny]

Where are you finding these specimens?

Are you paying for them?