Treatment declaration
Gemstones are commonly enhanced to modify and improve their colour and transparency.
These practices date back in some cases to antiquity and are considered a routine practice by the trade. As the price of an untreated and a treated stone may vary considerably, disclosure of the absence or presence of the treatment is requested by international standards.
![treatment_declaration](https://cdgemtestinglab.com/wp-content/uploads/2022/12/treatment_declaration.jpg)