Not Heated - NOT Treated

Completely natural gem, untouched by any heat or chemical process. Extremely rare and highly valued.

Very Low Temperature Heated - NOT Treated

Gently heated under 100°C to improve clarity without altering color. Maintains its natural integrity.

Low Temperature Heated - NOT Treated

Heated between 100°C–500°C to enhance clarity and transparency. A traditional and accepted practice with no chemical enhancement.

Heated - NOT Treated

Heated between 500°C–1800°C to bring out the stone’s best color and brilliance. No additives or foreign substances used.

None

No heating or any treatment applied or applicable.

Enanched

Refinement that preserves the natural essence while giving greater stability and brilliance. Common in fine jewerly.

Stabilized

Colorless resin-reinforced to increase hardness and polish. Widely valued in high jewelry.

NOT Oiled

No oil or filler used. Especially rare for emeralds, indicating exceptional natural clarity.

Insignificantly Oiled

Minimal oil applied only to reduce minor surface features. Completely invisible to the eye and widely accepted in high jewerly.

Moderately Oiled

A standard practice in emeralds. Helps enhance the appearance while preserving the stone’s authenticity and beauty.

Significantly Oiled

Important amount of oil used to improve overall look. Common in fine jewerly.