1 Carat Diamond Simulant

1 Carat Diamond Simulant/ unknown gemstone. Part of a larger mystery parcel, this is a gorgeous modified radiant cut stone. While it tested negative as a diamond, I believe it is some sort of diamond simulant stone. It's absolutely gorgeous in person and honestly looks very much like a diamond. Would make a stunning center stone or stand in stone for an engagement or statement ring! I'm pricing all unknown stones from this parcel at a dirt cheap price until I have the time to send more off to GIA.