14ct White Gold Oval Tanzanite and Diamond Ring - 2.12ct Violetish-Blue Tanzanite, Art Deco Milgrain Navette Head, 14 Diamonds



Overview

This ring has real design character. The 2.12ct oval tanzanite is bezel set at the centre of an elongated navette (marquise-shaped) head in a pattern of radiating milgrain-edged bars, creating a starburst effect with strong Art Deco revival sensibility. Fourteen round brilliant-cut diamonds (0.50ct total) are set in micro-claw settings at key points across the head, providing bright contrast against the blue-violet of the tanzanite. The openwork construction of the head with geometric cutouts keeps the piece light and airy while the milgrain beading on every edge is crisp and well-executed.



The tanzanite shows a medium violetish-blue colour, the most commercially desirable position on the colour spectrum for the species, with lightly included clarity and good transparency. As with all tanzanites, the stone will show different hues under different light sources due to its natural trichroism, shifting between blue, violet, and burgundy tones. Manufacture is noted as cast and hand assembled on the valuation certificate, indicating a higher level of finishing than cast-only construction.



Crown Jewellery Valuation issued a retail replacement certificate (No. 3814, August 2025) at AUD $10,870, one of the most recent certificates in this auction. Assessed by Ghazal Ghasemi (F.G.A.A., DG, NCJV Registered Valuer No. N663). Ring presents in very good condition with all stones secure and metalwork clean.



Gemstone Specification

Centre stone - Tanzanite:

Species: Tanzanite (zoisite)

Carat weight: 2.12ct (estimated whilst set)

Dimensions: 9.0mm x 7.0mm x 4.94mm

Cut: Oval mixed cut

Colour: Medium violetish-blue

Clarity: Lightly included

Setting: Rub-over (bezel)



Accent stones - Diamonds:

Quantity: 14 round brilliant cut diamonds

Total carat weight: 0.50ct (estimated)

Size range: 1.7mm to 2.0mm diameter

Colour: H-J

Clarity: SI2-I1

Setting: Micro-claw



Setting and Metal

Metal: 14ct white gold, hallmarked 585

Total ring weight: 4.5g

Setting type: Rub-over bezel centre, milgrain openwork navette head with radiating bars and geometric cutouts

Band profile: 2.39mm straight band, polished finish

Manufacture: Cast, hand assembled

Maker / designer: Unknown



Condition

Very good condition. Tanzanite secure in bezel with lightly included clarity. All 14 diamonds intact and secure. Milgrain detailing is crisp. White gold is clean and bright with minimal surface wear. Open gallery framework is undamaged. Stamped 585 (14ct).



Includes

Crown Jewellery Valuation certificate No. 3814 (retail replacement value AUD $10,870, dated August 2025)

Valuer: Ghazal Ghasemi F.G.A.A., DG, NCJV Registered Valuer No. N663



Specifications

Item: Tanzanite and diamond ring

Metal: 14ct white gold (585)

Tanzanite: 2.12ct, oval cut, medium violetish-blue, lightly included, 9.0mm x 7.0mm x 4.94mm

Diamonds: 14 x round brilliant, 0.50ct total, H-J colour, SI2-I1

Total weight: 4.5g

Valuation: AUD $10,870 retail replacement (Aug 2025)

Valuation cert: No. 3814, Crown Jewellery Valuation

488487+98

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