Natural Tourmaline · 3.429 ct · Cushion · Green · Unheated

$2 762.14

Natural Green Tourmaline (Verdelite) weighing 3.429 ct, fashioned in a refined cushion mixed cut and measuring 10.1 × 9.7 × 4.9 mm. This transparent gemstone displays a rich olive-green colour with lively yellowish-green reflections and an exceptionally clean VVS to IF clarity profile. Good cut quality, good to very good symmetry and polish, and attractive vitreous luster complete the presentation. No indications of heating or any other treatment.

1 in stock

NGB Reference: NGB-000791 SKU: FA-TOVE024GR-002-277 Category: Brand:
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This natural Green Tourmaline weighs 3.429 carats and is fashioned in an elegant cushion-shaped mixed cut, combining substantial size with exceptional internal cleanliness and a rich deep olive-green colour.

Measuring approximately 10.1 × 9.7 × 4.9 mm, the gemstone presents a broad face-up appearance with balanced proportions. Its cushion outline gives the stone a refined yet substantial presence, making it particularly suitable as a centre stone for a custom jewellery design.

The gemstone displays a distinctive olive-green body colour, accompanied by lively yellowish-green reflections under direct illumination. These tonal variations add depth to the colour while remaining consistent with the natural pleochroic character of Tourmaline.

Green Tourmaline is traditionally referred to in the gemstone trade as Verdelite, a colour-variety designation used for green members of the Tourmaline group. The exact mineral species within the group should only be assigned when specifically established by mineralogical testing.

A major quality characteristic of this specimen is its exceptional clarity. The gemstone is transparent and presents a clarity comparable to approximately VVS to IF, with only minute natural internal characteristics expected to be visible under magnification. This high degree of internal cleanliness allows excellent light transmission and gives the gemstone an unusually clear and open appearance for Tourmaline.

The cushion mixed cut is assessed as Good, while Good to Very Good symmetry supports a balanced outline and orderly facet arrangement. Good to Very Good polish produces clean reflective surfaces and an attractive vitreous luster.

The deep olive-green body colour remains sufficiently open to transmit light effectively, while the transparent interior and high clarity allow yellowish-green reflections to become visible across the faceted surface under stronger illumination.

At 3.429 ct, the gemstone combines considerable size with unusually high transparency and internal cleanliness, giving it strong visual presence without sacrificing refinement.

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.

With its substantial 3.429 ct weight, deep olive-green colour and exceptionally clean VVS to IF clarity profile, this natural Green Tourmaline combines size, transparency and refinement in a particularly attractive specimen. Its cushion cut, lively yellowish-green reflections and untreated condition make it highly suitable for fine custom jewellery or a carefully selected gemstone collection.

Overall Score: 96/100

NGB Grade: Exceptional

Quality Evaluation

Color19.0/20
Clarity19.0/20
Cut19.0/20
Optical Performance19.0/20
Overall Appeal20.0/20

Evaluation Notes

This natural Green Tourmaline presents an **exceptional overall gemmological quality profile**, combining a substantial **3.429 ct weight** with a rich deep olive-green colour, excellent transparency and an exceptionally clean **VVS to IF clarity profile**. Only minute natural inclusions and subtle growth features are visible under magnification, with virtually no influence on internal cleanliness or face-up appearance.

The cushion-shaped mixed cut is assessed as **Good**, while Good to Very Good symmetry and Good to Very Good polish support a balanced outline, clean facet reflections and attractive vitreous luster. The transparent body allows strong light transmission, while subtle yellowish-green reflections and natural pleochroic variation add depth and visual interest to the deep green colour.

The combination of size, exceptional clarity, transparency, colour quality, cutting performance and untreated condition places this gemstone firmly within an exceptional quality range, supporting an overall **96/100 assessment**.

Species

Tourmaline

Gemstone Variety

Tourmaline

Gemstone Sub-variety

Verdelite

Color

Green

Shape

Cushion

Cut

Mixed Cut

Treatment

Unheated, Untreated

Transparency

Transparent

Gemological Properties

Carat Weight3.429 ct
Dimensions10.1 × 9.7 × 4.9 mm
TransparencyTransparent
ClarityVVS
Refractive Index1.620–1.650
Specific Gravity3.02–3.26
Hardness7–7.5 Mohs
Birefringence0.020
Crystal SystemTrigonal
Dispersion0.017
LusterVitreous
Color Descriptionolive green
Transparency NotesTransparent; assessed together with the specimen-specific clarity and internal characteristics.
Natural CharacteristicsOnly minute natural inclusions and subtle internal growth features are visible under magnification, consistent with an exceptionally clean **VVS to IF clarity profile**. These characteristics have virtually no influence on the gemstone’s high transparency, light transmission or face-up appearance. The deep olive-green body colour remains clear and well expressed, while subtle pleochroic variation and yellowish-green reflections may become visible with changes in viewing direction and illumination.

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