Natural Fluorite · 3.08 ct · Octagon · Mixed Cut · Unheated

This individually documented natural Fluorite weighs 3.08 ct and is fashioned in an octagonal mixed cut, measuring approximately 9.5 × 8.0 × 6.1 mm. The gemstone displays an attractive bluish-green to sea-green colour with a very light blue influence, creating a fresh and subtly cool overall appearance.

The material is transparent and displays an SI clarity profile, with natural internal characteristics visible within the stone. These inclusions and structural features are consistent with natural Fluorite and contribute to the individual appearance of the specimen while allowing sufficient transparency for the colour and internal reflections to remain clearly visible.

Fluorite is a calcium fluoride mineral, CaF₂, belonging to the cubic or isometric crystal system. Because of its isotropic optical character it shows no birefringence. Gem-quality Fluorite typically has a refractive index of approximately 1.433–1.435, a specific gravity of approximately 3.17–3.19, low dispersion of approximately 0.007 and a hardness of 4 on the Mohs scale. Its relatively low hardness and perfect octahedral cleavage mean that faceted Fluorite should be handled with greater care than harder jewellery gemstones.

The octagonal mixed cut provides a structured geometric presentation and combines different facet arrangements to balance colour, transparency and internal reflection. The cut and symmetry provide a pleasing face-up appearance, while the polish is assessed as good to very good. The naturally vitreous luster adds further brightness to the surface of the gemstone.

The bluish-green to sea-green colour remains the principal visual feature of this specimen. Its light blue influence gives the stone a slightly cooler character than more yellowish-green Fluorite, while natural variations in colour concentration and internal structure add additional depth.

This Fluorite is documented as unheated and untreated, preserving its natural colour and individual internal characteristics. The combination of attractive sea-green colour, transparent material, SI clarity, geometric octagonal mixed cut and good to very good polish gives this 3.08 ct natural Fluorite a distinctive and appealing presentation.