Natural Black Rutilated Quartz · 0.490 ct · Oval Cabochon

This individually documented Natural Black Rutilated Quartz weighs 0.490 carats and has been fashioned into a smooth oval cabochon. Its transparent Clear Quartz host contains fine black Rutile inclusions, creating a distinctive internal pattern that is unique to this individual gemstone.

Measuring approximately 4.1 × 5.9 × 2.4 mm, the stone has a gently polished domed surface that allows the internal Rutile structures to remain clearly visible. Rather than relying on facet brilliance, the cabochon form places the emphasis on the contrast between the transparent Quartz and the dark needle-like mineral inclusions.

Natural Black Rutile Inclusions

Rutilated Quartz consists of natural Quartz containing crystals of Rutile, a titanium dioxide mineral (TiO₂). Rutile commonly develops as elongated or acicular crystals and may occur in golden, reddish, silvery, brown or black forms.

In this specimen, the Rutile appears predominantly black, forming fine thread-like inclusions within the transparent Quartz. Their distribution creates an individual mineralogical pattern that cannot be duplicated from one natural stone to another.

The transparent Quartz body allows these inclusions to remain clearly visible from different viewing angles. Under changing illumination, individual Rutile needles may display subtle reflective or submetallic highlights, adding depth to the otherwise near-colourless host material.

The polished Quartz itself displays a characteristic vitreous luster, while the enclosed Rutile may show submetallic to adamantine reflections. The reported submetallic appearance therefore relates primarily to the Rutile inclusions rather than to the polished Quartz surface.

This specimen is recorded as heated for material stabilisation. The treatment is disclosed as part of the specimen-specific characteristics of the gemstone.

As a naturally included gemstone, fine fissures, internal growth features and minor surface-reaching characteristics may occur around or alongside the Rutile inclusions. These features contribute to the natural internal architecture and individual identity of the stone.

With its transparent Quartz host, fine black Rutile pattern and polished oval cabochon form, this 0.490 ct natural Black Rutilated Quartz offers an attractive combination of mineralogical character and understated visual contrast. Its individual inclusion pattern makes it suitable for collectors, bespoke jewellery or designs where the natural internal structure can remain the central feature.