Jewelry Mountings
Precious Metals Jewelry
Before You Buy Jewelry
Jewelry Terminology
Diamond Jewelry
Gemstones Listing
Enhancement Treatments
Jewelry Terminology
Enhancement Treatments
Faceted Stone Parts
Gemology Organizations
The Classic Shapes
Two Basic Cutting Styles
Enhancement Treatments

Various enhancement treatments and stone-fabrications in use today:

Fabrications, reproductions and outright frauds:

1. Foil-backed mountings

2. Imitation or simulated gems

3. Doublets or composite stones


1. Synthetic lab-produced stones [made up of the same basic chemical composition as a natural gemstone].

2. Dyeing techniques

3. Painting effects

4. Fracture-filling techniques [epoxy resins, oils, waxes and glue]

5. Heat-treatment

6. Radiation treatment

7. Diffusion treatment [also called ‘surface diffusion']

8. HPHT treatment [High pressure, high heat treatment]

9. Bleaching

10. Impregnation and coating with plastic or wax

11. Laser drilling

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