Uncut diamond jewelry is made up of natural diamonds which are only finished as they are found. They are also known as Polki diamonds. They are not treated and polished by the Jeweller, meaning uncut diamonds do not have a specific shape, faces, or geometrical angle. Uncut rough diamonds resemble water-worn quartz pebbles but can be distinguished based on location and characteristics like crystal form, specific gravity, hardness and other unique features. Diamonds in place have mostly been found in kimberlite pipes in continental cratons. The easiest test is the scratch test. If a supposed rough diamond can be scratched by anything other than another diamond, then it is fake. The other mineral most often thought to be diamond is quartz. The only mineral you can really use to test the hardness of a diamond is a piece of corundum.We at GJTL screen uncut diamonds of every shape using state of the art technologies to determine the origin of the stones whether they are naturally mined or simulant. These tests are conduct by trained professional secure and controlled conditions which lead to the detailing of relevant gemological characteristics of the stones in question. They are also checked for fracture filling and finally, a report is issued which includes a detailed photograph only if gemological analysis conclusively reveals it.