- Ideal Cut
Term often used for a round brilliant cut diamond that is believed to be excellent across the board for proportions and overall make. There are many different ‘ideal cuts’, the most famous being the Tolkowsky Ideal Cut. The range for ideal cut diamond parameters can often be very broad, so care must be excercised in labeling a diamond as ‘ideal cut’.
- Indented Natural
- Independent Laboratory
Diamond grading laboratory that has no financial interest in the actual trade (buying and selling) of diamonds.
- Industrial Grade Diamond
Diamond usually not polished as a gemstone, as it does not meet the minimum quality criteria for grading. Industrial diamonds are very heavily included, lacking the transparency, brilliance and life that a gem quality diamond must exhibit. Industrial diamonds are somtimes used in their rough diamond form in jewellery. Industrial diamonds are very useful for tools, drills, lasers, abrasives, and other such uses. Only approximately 20% of mined diamonds are of gem quality.
- Internal Laser Drilling
- International Diamond Council
- International Diamond Manufacturers Association
International diamond trade association committed to fostering and promoting the highest ideals of honesty and best practice principles throughout the diamond industry worldwide.
- Internationally Recognised Standards
- Irradiated Diamonds
Treatment to change or artificially enhance the colour of a diamond. Irradiated diamonds are bombarded with a variety of high-energy particles that physically alter their atomic structure, thus changing their colour. Most irradiated diamonds are annealed to further modify their colour. Click here to learn more about irradiated diamonds.