Gemstone Enhancements
The term "enhancement" is defined as any treatment or process other than cutting and polishing that improves the appearance (color/clarity/phenomena), durability, value or availability of a gemstone. In today’s gem marketplace, many gemstones have been enhanced by a variety of methods. Such processes may range from simple heating (such as with tanzanite) to high-tech irradiation (such as blue topaz).
The AGTA GTC takes enhancement disclosure seriously, which is why full enhancement disclosure is an important part of our gemological reports. Indeed, the AGTA member guidelines are the most stringent in the industry. To view the full AGTA enhancement manual, see the following link:
