Natural Ruby · 0.4 ct · Pear · Africa · Unheated

$813.64

Natural Ruby weighing 0.29 ct, displaying a rich wine-red to purplish-red colour in an elegant pear-shaped mixed cut. Measuring 4.5 × 3.7 × 1.9 mm, this transparent gemstone shows a VS clarity profile, very good cut and symmetry, and excellent luster. No indications of heating or any other treatment; origin East Africa.

1 in stock

NGB Reference: NGB-000775 SKU: FA-NRUB025PR-002-340 Category: Brand:
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This natural Ruby weighs 0.29 carat and is fashioned in an elegant pear-shaped mixed cut, combining a compact jewellery size with attractive colour, transparency and excellent surface luster.

Measuring approximately 4.5 × 3.7 × 1.9 mm, the gemstone presents a refined pear outline suitable for individual jewellery design. Its transparent body and carefully arranged facets allow the natural red colour and internal brightness to remain clearly visible despite the stone’s relatively small size.

The gemstone displays a rich wine-red body colour with pinkish to purplish undertones, producing an attractive purplish-red appearance. These cooler colour modifiers add visual depth while retaining the dominant red character required for Ruby.

Its clarity is comparable to approximately VS, with only limited natural inclusions and internal growth features visible under magnification. These characteristics have relatively little influence on transparency or overall face-up appearance, supporting a clean and refined presentation.

Ruby is the red gem variety of Corundum (Al₂O₃) and is recognised for its combination of strong colour, excellent durability and high luster. With a hardness of 9 on the Mohs scale, Ruby is particularly well suited to fine jewellery when properly set.

This specimen shows a Very Good cut, with Very Good symmetry supporting a balanced pear outline and orderly facet arrangement. Its most notable finishing characteristic is the excellent luster, which enhances surface brightness and gives the gemstone a crisp, polished appearance.

There are no indications of heating and no indications of any other treatment. The gemstone is therefore presented with its naturally observed colour and internal characteristics without documented enhancement.

The specimen is recorded as originating from East Africa. Unless supported by a dedicated laboratory origin determination, this should be regarded as the documented geographic source rather than a laboratory-confirmed country of origin.

With its attractive purplish-red colour, clean VS-level appearance, very good cutting and excellent luster, this 0.29 ct natural unheated Ruby offers a refined combination of colour and optical quality in a practical jewellery size. Its untreated condition and East African provenance add further gemmological interest to this individual specimen.

Overall Score: 93/100

NGB Grade: Excellent

Quality Evaluation

Color19.0/20
Clarity18.0/20
Cut18.0/20
Optical Performance19.0/20
Overall Appeal19.0/20

Evaluation Notes

This natural Ruby presents an **excellent overall gemmological quality profile**, combining a very good wine-red to purplish-red body colour with high transparency and a relatively clean **VS clarity profile**. Fine natural inclusions and subtle growth-related features have only limited influence on internal cleanliness and light transmission. The pear-shaped mixed cut, very good cutting quality and very good symmetry support a balanced face-up presentation, while the **excellent luster** provides particularly strong surface brightness and visual refinement. The absence of indications of heating or any other treatment adds further gemmological interest. Overall, the combination of colour, clarity, transparency, cutting quality and luster supports an excellent **93/100** assessment.

Species

Corundum

Gemstone Variety

Ruby

Color

Red

Shape

Pear

Cut

Mixed Cut

Treatment

Unheated, Untreated

Origin

Africa

Transparency

Transparent

Gemological Properties

Carat Weight0.4 ct
Dimensions4.5 × 3.7 × 1.9 mm
TransparencyTransparent
ClarityVS
Refractive Index1.762–1.770
Specific Gravity3.97–4.05
Hardness9 Mohs
Birefringence0.008-0.010
Crystal SystemTrigonal
Dispersion0.018
LusterVitreous to Subadamantine
Color DescriptionRed (wine red with pinkish purplish luster)
Transparency NotesTransparent; assessed together with the specimen-specific clarity and internal characteristics.
Natural CharacteristicsFine natural inclusions, subtle internal growth features and minor healed fissures may be visible under magnification, consistent with a VS clarity profile. These characteristics have only limited influence on the gemstone’s high transparency and clean face-up appearance. The wine-red body colour with pinkish-purplish undertones remains strongly expressed, while the relatively clean internal structure and excellent luster contribute to a refined natural Ruby presentation.

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