← All inclusions

What to look for

Under 10x or higher: V-shaped or chevron patterned structures, plus small rod-like inclusions with widened heads resembling nails.

What it means

Chevron and nail-head inclusions are associated with hydrothermal synthetic emerald growth and differ from many natural emerald inclusion scenes.

Expert move

Chevron (V-shaped) patterns and nail-head rods are not found in natural emerald ÔÇö their presence alone is a strong synthetic indicator. Look for them under 40x in immersion before requesting lab testing.

Gemstone inclusion

Chevron and Nail-Head Inclusions, Synthetic Emerald

Under 10x or higher: V-shaped or chevron patterned structures, plus small rod-like inclusions with widened heads resembling nails.

Category Synthetic

Seen in

Hydrothermal Synthetic Emerald

Check with

Microscope 40x higher immersion

Reading order

Confirm the feature is internal, not surface dirt or polish marks.
Use side light to reveal relief, planes and shimmer.
Compare with related stones before making an origin or treatment call.