This page gathers every stone in our collection finished as a cabochon — a smooth, domed form polished without facets. The cut is not a lesser alternative to faceting but a deliberate choice: certain optical effects live below the surface of a gem and can only be read across an unbroken curve. A dome gathers light and returns it as a single moving band or sheen, where facets would fracture that light into unrelated flashes.
The varieties collected here are those whose character depends on this treatment of the surface. Blue Star Sapphire is cut en cabochon so that fine needle inclusions align and resolve into asterism — the six-rayed star that travels as the stone is tilted. Rainbow Moonstone and Blue Moonstone are domed to display adularescence, the soft internal glow that drifts beneath the surface. Ethiopian Opal is shaped to present its play-of-colour across a continuous field. Rubellite Tourmaline appears here where a silky or richly included interior reads better as depth of colour than as brilliance.
When choosing, consider the dome height, the placement of the effect relative to the centre, and how the stone behaves under a single light source rather than diffuse daylight.
