Natural Clear Quartz · 10.876 ct · Square Octagon Custom Cut

$331.70

Natural Clear Quartz weighing 10.876 ct, featuring an almost colourless transparent body and a distinctive square-octagonal custom cut. Measuring 13.3 × 13.3 × 9.7 mm, this gemstone shows a clean VS clarity profile, very good symmetry and very good cutting quality. No indications of heating or other treatment have been recorded.

1 in stock

NGB Reference: NGB-000024 SKU: FA-QUAR026CL-003-262 Category: Brand:
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This individually documented natural Clear Quartz weighs 10.876 carats and has been fashioned into a distinctive square octagonal custom cut. Its transparent, almost colourless body provides a clean optical field in which the precise geometry of the faceting and the natural internal character of the gemstone remain clearly visible.

Measuring approximately 13.3 × 13.3 × 9.7 mm, the stone presents a substantial and well-balanced square profile with clipped octagonal corners. The custom facet arrangement moves beyond conventional standardized cutting patterns, creating an individual geometric design with strong internal reflections and visual depth.

The gemstone has a clarity profile comparable to VS, with limited natural internal characteristics visible within the otherwise highly transparent material. These fine inclusions and growth features contribute to the natural identity of the specimen while having only a limited influence on its overall optical presentation.

Its almost colourless appearance allows light to travel effectively through the stone and places particular emphasis on the facet architecture. The combination of transparency, depth and custom faceting produces changing geometric reflections as the gemstone is viewed from different angles.

Because Clear Quartz is highly transparent and near-colourless, colours from surrounding objects, backgrounds and lighting may be reflected or transmitted through the gemstone. Any coloured flashes visible in photographs or video therefore represent environmental reflections rather than inherent body colour or a colour-change phenomenon.

The cutting quality of this specimen is assessed as Very Good, with Very Good symmetry providing a balanced and well-resolved face-up presentation. The precision of the square-octagonal outline and facet arrangement contributes strongly to the gemstone’s overall visual character and optical performance.

Clear Quartz belongs to the quartz mineral species and is particularly suitable for custom lapidary work due to its transparency, durability and ability to support complex faceting designs. Clean material of this size gives the cutter considerable freedom to develop geometric patterns that differ substantially from standardized commercial cuts.

No indications of heating or other treatment have been recorded for this specimen. It is therefore presented in its naturally documented state.

As a natural gemstone, fine internal inclusions, subtle growth structures or minor surface characteristics may occur. These features developed during the geological formation of the crystal and contribute to the individual identity of the specimen.

With its substantial 10.876 ct weight, high transparency, very good cutting quality and precisely balanced square-octagonal design, this natural Clear Quartz offers an attractive combination of geometric precision, optical depth and clean natural character. It is particularly suited to collectors, bespoke jewellery or designs requiring a distinctive individually cut centre stone.

This is the exact natural gemstone shown in the accompanying product photographs.

Overall Score: 94.0/100

NGB Grade: Excellent

Quality Evaluation

Color19.0/20
Clarity18.0/20
Cut19.0/20
Optical Performance19.0/20
Overall Appeal19.0/20

Evaluation Notes

This natural Clear Quartz presents an exceptional overall quality profile, combining high transparency, a clean VS clarity appearance and a very well-executed square-octagonal custom cut. Very good symmetry and precise facet geometry support strong internal reflections, excellent visual balance and a refined face-up presentation. Minor natural characteristics have little influence on the optical performance, resulting in a highly attractive gemstone with excellent overall quality and individual lapidary character.

Species

Quartz

Gemstone Variety

Quartz

Gemstone Sub-variety

Clear Quartz

Color

Colorless

Shape

Octagon, Square

Cut

Custom Cut

Treatment

Unheated, Untreated

Transparency

Transparent

Gemological Properties

Carat Weight10.876 ct
Dimensions13.3 × 13.3 × 9.7 mm
TransparencyTransparent
ClarityVS
Refractive Index1.544–1.553
Specific Gravity2.651
Hardness7 Mohs Mohs
Birefringence0.009
Crystal SystemTrigonal
Dispersion0.013
LusterVitreous
Color DescriptionAlmost colourless / clear
Transparency NotesTransparent.
Natural CharacteristicsFine natural inclusions, subtle internal growth features and minor structural variations may be visible under magnification, consistent with a VS clarity profile. These characteristics have limited impact on the gemstone’s high transparency and clean overall appearance.

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