How to Tell If You Have a Rough Diamond

The metaphor, "A diamond in the rough," refers to something that could be made valuable or special with a little polishing. An actual diamond in the rough typically looks like a small, non-descript stone that most lay people would hardly notice and would not recognize as a precious gem. If you have a stone that you believe could be a diamond, there are certain characteristics to look for and also tests that can be done to help you determine whether you have a valuable gem or a worthless dud.

Instructions

1

Research the area in which you found the stone you suspect of being a rough diamond. If the area is known for having diamonds, such as Arkansas's Crater of Diamonds State Park, then there is a possibility that you have stumbled on a diamond.

2

Study the stone's features. Most diamonds are small. A one-carat gem is approximately the same size as a green pea. Rough diamonds should have a luster or sheen to their appearance, and they may also feel slightly oily to the touch.

3

Look into the stone. Most rough diamonds are translucent, so you should be able to see into a stone, but not through it, as if it were clear.

4

Compare the shape of your diamond against pictures of diamond roughs. Many rough diamonds have a distinctive geometric shape, while others, such as those found in the Crater of Diamonds State Park may appear almost round and smooth.

5

Place your rough diamond in water. Real stones will sink. Although some fake stones will also sink, many others will float to the surface.

6

Take your rough diamond to a jeweler or gemologist. An expert can perform several tests, including one that uses electrical conductivity, on your rough stone to see if it is in fact a diamond.