Kashmir Sapphire Inclusions

First Published: 7 September 2026

Kashmir Sapphire Inclusions

Explore Kashmir sapphire inclusions in Hyperion, the Lotus Gemology inclusion database. Hyperion contains photomicrographs of inclusions and internal features in natural sapphires from Kashmir, documented with information on treatment, lighting conditions, field of view, photographer and published references.

A pair of zircon crystals (identity confirmed with raman spectroscopy) are suspended in this blue sapphire that hails from Kashmir.
Two small sapphires were submitted to Lotus Gemology for testing. Both were said to come from Kashmir (Sumjam, India). One of the stones had a small transparent crystal grain cut through on the surface, as shown in the center of this photo. Using micro Raman, we identified the inclusion as anorthite feldspar. Feldspars are common in Kashmir sapphire. On the other hand, apatite has not been reported in Kashmir sapphire, but it is common in Sri Lankan and Madagascar sapphires.
Spall marks from heating on the pavilion of a heat-treated Kashmir (India) sapphire.
Small angular blue spots just beneath the surface of a Kashmir sapphire. Rough Kashmir sapphires are quite unusual in that they also display these intense blue spots on the surface.
Kashmir sapphires are unique in that the skin of many crystals feature deep blue spots of color, like spots on a leopard’s back. These are sometimes incorporated into finished stones, where they will be found just below the surface.
Small angular blue spots just beneath the surface of a Kashmir sapphire. Rough Kashmir sapphires are quite unusual in that they also display these intense blue spots on the surface.
Kashmir cloud scene in natural Kashmir sapphire. These fine clouds, which are so small that they have never been definitively identified, are responsible for the famous velvet texture of these Himalayan blues. 15x.
Spall marks from heating on the pavilion of a heat-treated Kashmir (India) sapphire.
Spall marks from heating on the pavilion of a heat-treated Kashmir (India) sapphire.
Polysynthetic twinning is seen in dramatic relief within this Kashmir (India) sapphire when viewed between crossed polars.
Two small growth twins near the culet are revealed by examination between crossed polars in this rare sapphire from Kashmir (India).
Extremely fine exsolved particles produce the characteristic velvety texture of sapphires from Kashmir.

Kashmir sapphire inclusions may include mineral crystals, rutile silk, healed fissures, fluid inclusions, negative crystals, growth features and other internal features formed during or after crystal growth. Such features are important to gemologists because they can provide evidence useful in identifying sapphire and evaluating a possible Kashmir origin.

Kashmir Sapphire Inclusion Photomicrographs

The Hyperion Kashmir sapphire gallery includes microscopic features documented in sapphires from Kashmir. Each entry is accompanied by descriptive information and, where available, references to the gemological literature.

What Inclusions Can Reveal About Kashmir Sapphire

Inclusions are an important part of geographic origin determination in sapphire. Their form, composition, orientation and associations can provide evidence that, when considered together with other gemological properties, may support or contradict a Kashmir origin.

Hyperion combines inclusion photomicrography with supporting gemological information so that individual features can be compared with documented examples from Kashmir sapphires.

About Hyperion

Hyperion is the Lotus Gemology searchable inclusion database. It allows users to browse gemstone inclusions by gem type, geographic origin, treatment and keyword.

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