This technique was invented in 1982 by an Israeli diamond cutter. A molten glass-like substance is inserted into the small cracks of van cleef arpels clover bracelet replica diamonds, and this can improve the diamond's clarity. This will only work, however, on a diamond that has small cracks. At times, bromine instead of molten glass is used to fill the cracks. While this may be a less expensive process, it may also cause the stone to discolor after a period of exposure to the sun. Sometimes, a laser is also used to inject acid into the cracks to bleach them. Before you purchase any diamond, be sure to ask the van cleef arpels clover bracelet replica jeweler if it has been treated. If a diamond is sold as untreated, then you should be issued a certificate verifying this fact. If you are intentionally buying treated diamonds, you should ask the jeweler to write down the specific details of the treatment, any necessary care that should be given to the stones, and any type of guarantee the company offers, such as repairing a treatment that has become damaged. Finally, it is always a good idea to take the van cleef arpels clover bracelet replica diamond you are purchasing to an independent appraiser. Be sure you have an agreement from the seller that you can return the diamond for a refund if the appraisal doesn't satisfy you.