Learn About Gemstone Treatment Types

1. No Treatment (None)

The gemstone is in its natural state as found in the earth. It has not been subjected to any heat, radiation, or filling processes.

2. Heated (Thermal Treatment) - "Standard Heated"

The application of heat to improve color and/or clarity. This is a traditional, accepted practice for stones like sapphire, ruby, and tanzanite.

3. Beryllium Diffused / "Beryllium Heated"

A more advanced heating process where gems are heated with elements like beryllium to deeply infuse color into the stone. This can create vibrant oranges, pinks, and yellows, often in sapphires.

4. Minor Oil / Clarity Enhancement

 A common practice for emeralds, where a colorless oil or resin is used to fill surface-reaching fractures, improving clarity and stability.

• Why it matters:

  • Minor Oil/Faint: Indicates a small amount of residue. This is expected for most emeralds and requires only standard care.

  • Moderate to Significant Oil/Resin: The treatment is less stable. The filler can dry out, discolor, or be damaged by heat, ultrasound cleaners, or harsh chemicals. These stones require special care and may need re-treatment over time.