Natural Tanzanite · 0.030 ct · Round Brilliant Cut · Tanzania

 12,78

Natural Tanzanite · 0.030 ct · Round Brilliant Cut

An elegant natural Tanzanite from Tanzania, displaying an attractive light violet-blue colour and lively brilliance, individually evaluated by Natural Gems Belgium.

NGB Reference: NGB-000008
Treatment: Gently heated
Exact gemstone shown · Only 1 available

1 in stock

NGB Reference: NGB-000008 SKU: FA-TANZ026BP-003-569 Category: Brand:
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Natural Tanzanite – 0.030 ct Round Brilliant Cut

A natural Tanzanite from Tanzania, fashioned as a precise round brilliant cut. The gemstone displays an attractive light violet-blue appearance with good brilliance for its small size. Its balanced proportions and very good symmetry make it suitable for delicate fine jewellery, accent-stone applications and pavé-style designs.

Tanzanite is the blue-to-violet variety of zoisite and is commercially associated with northern Tanzania. This gemstone has been gently heated, a commonly accepted treatment used to develop Tanzanite’s characteristic blue-violet colour.

This is the exact natural gemstone shown in the accompanying photographs and documentation.

Overall Score: 92.0/100

NGB Grade: Excellent

Quality Evaluation

Color18.0/20
Clarity19.0/20
Cut19.0/20
Optical Performance18.0/20
Overall Appeal18.0/20

Evaluation Notes

Natural Tanzanite from Tanzania with an attractive light violet-blue colour. The round brilliant cut is well proportioned with very good symmetry and good brilliance for its small size. Suitable as an accent gemstone for fine jewellery and pavé-style settings.

Species

Zoisite

Gemstone Variety

Tanzanite

Color

Blue

Shape

Round

Cut

Brilliant Cut

Treatment

Heated

Origin

Tanzania

Transparency

Transparent

Gemological Properties

Carat Weight0.03 ct
Dimensions2.0 × 2.0 mm
TransparencyTransparent
ClarityEye Clean
Refractive Index1.691–1.700
Specific Gravity3.35
Hardness6–7 Mohs Mohs
Birefringence0.009
Crystal SystemOrthorhombic
Dispersion0.021
LusterVitreous
Color DescriptionLight violet-blue
Transparency NotesTransparent with good light transmission.
Natural CharacteristicsMinor natural internal characteristics consistent with natural Tanzanite.

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