Prism Gem LLC

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General Questions - - - Diamond Irradiation - - - - Plasma Deposition Coloration Process - - - - High Pressure High Temperature (HPHT) - - - - Clarity Enhancement - - - Diamond and Jewelry Repairs - - Online Purchases - - Answers General Questions - With advane in science and technology, it is now possible to alter the color and clarity of naturally occuring diamonds in lab. Diamonds that have been modified in labs are called treated diamonds or enhanced diamonds. Some of these modifications are intrinsically dependent on the diamond charectersitic while others are purely extrinsic reversible enhancements. - In our opinion enhanced diamond are priced more than the original diamond as they are definitely more appealing and desirable. However, they would be priced lower than a naturally occuring colored diamond or less included diamond. - Yes, most leading gem labs would certify an enhanced diamond as they would a regular gemstone. However, some labs may not give a clarity grade to the clarity enhanced diamonds since the process may be reversible and it is difficult to predict the original clarity grade. Most labs would grade the color of a color enhanced diamond with a footnote saying that the diamond was enhanced. Diamond Irradiation - Blue, green and yellow are the most popular colors produced using the irradiation process. Orange, red and purple/pink colors are also possible which are more difficult to produce. - Yes, absolutely! All enhanced diamonds produced by Prism Gem are processed exclusively in the United States adhering to strict safety standards and government regulations. Diamonds colored by Prism Gem are 100% radiation free. - The color changes produced in diamonds by the irradiation process are irreversible. The color is stable and permanent under normal wear and tear. The color is not affected by chemicals, ultrasonic cleaners, steam cleaning, polishing or heating up to 1000 °F. Yellow, orange, red and pink colored diamonds are unaffected by heat even over 1000 °F. Blue and green colors may fade when the diamond is heated over 1000 °F. Special care of colored diamonds should be taken when resizing a ring or some jewelry repairs. Avoid exposing diamond to jewelers torch which may heat diamond to over 1000 ° F. - Any diamond with transparency irrespective of its original color and clarity can be processed using this process. Our lab can suggest which color is most suitable for a particular diamond after visual and chemical analysis in the lab. In general, white diamond can be processed to any of blue, green or yellow colors. We recommend blue or green colors for diamonds that originally has brownish color tone or black inclusions as this can mask the the original undesiredcolor or inclusions. Diamonds with yellow tone can be processed to yellow color if it has NO fluorescence or to green or greenish yellow color if the diamond shows fluorescence. Plasma Deposition Coloration Process - Pink purple, orange and red are the most popular colors produced using the Plasma Deposition coloration process. Blue, green and yellow colors are also possible but are less popular as these colors are better produced by other processes.

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