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SKU: Q7M4L2X

25.90 carats Natural Blue-purple Tanzanite | Oval Cut

$29,100.00 USD

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25.90 carats Natural Purplish-Blue Tanzanite oval main view | SARATTI

Description

This natural Tanzanite shows a richly saturated purplish-blue appearance, with vivid blue dominating much of the stone and deeper purple notes emerging through the centre and across shifting angles. Its tone appears strong and lively rather than dark or muted, giving the gemstone an expressive face-up character. In the provided views, the stone also shows natural pleochroic variation, revealing changing blue and purple impressions as the orientation moves.

Fashioned in an oval cut, the gemstone presents a balanced elongated outline with a facet arrangement that supports bright surface reflections and noticeable internal depth. Light moves across the crown in an organised yet lively way, helping the stone retain strong visual presence while also revealing the layered character of Tanzanite. The cut works well with the purplish-blue body colour, allowing both the cooler blue and richer purple areas to remain visible.

Weighing 25.90 carats and measuring 20.6 × 15.8 × 11.1 mm, this Tanzanite has exceptional scale and a commanding face-up presence. Its proportions make it especially suitable for a statement pendant, a brooch, or a carefully protected bespoke centre-stone design. Because Tanzanite ranks below harder jewellery stones, a protective setting such as a bezel, halo, or guarded prong arrangement is recommended where appropriate.

Details & Care

Gemstone Identity
  • Displays a purplish-blue hue with vivid blue across much of the face and deeper purple concentration visible through the centre.
  • From different viewing angles, natural pleochroic variation reveals shifting blue and purple tones.
  • Weighing 25.90 carats, the gemstone offers a substantial and highly impressive presentation.
  • At 20.6 × 15.8 × 11.1 mm, its proportions create a large face-up outline with notable depth.
  • Fashioned in an oval shape, the stone presents a smooth and well-balanced elongated outline.
  • The oval cut supports bright reflective movement and visible internal depth across the stone.
  • The supplied images show a transparent appearance with subtle natural internal character within the gemstone.
  • Heated treatment is recorded for this gemstone.
  • Originating from Tanzania, this gemstone represents the single known source of Tanzanite.
  • Ranking 6 to 7 on the Mohs scale, it should be protected from impact, abrasion and sudden temperature changes.
  • Owing to its size and shape, it is well suited to a statement pendant, brooch or carefully protected bespoke centre-stone setting.
  • Accompanied by a SARATTI Gemstone Identification Report.

Gemstone Specification

Gemstone Type: Natural Purplish-Blue Tanzanite
Species: Zoisite
Variety: Natural Tanzanite
Carat Weight: 25.90 carats
Shape: Oval
Cut: Oval Cut
Colour: Purplish-Blue
Dimensions: 20.6 × 15.8 × 11.1 mm
Pleochroism: Visible blue-to-purple directional variation
Treatment: Heated
Origin: Tanzania
Certificate: SARATTI

December Birthstone

Tanzanite is recognised as a December birthstone and is associated with the 24th wedding anniversary. Its purplish-blue appearance and single geographic source give it a distinct place within modern coloured gemstones.

Design Invitation

Its purplish-blue colour, oval outline and exceptional scale would suit a statement pendant or a carefully protected bespoke centre-stone design. The Tanzanite may be acquired loose or developed into a bespoke jewel through SARATTI’s atelier.

Consult an Advisor

For guidance in selecting a gemstone or refining your design, a SARATTI advisor is available to assist with thoughtful recommendations and personalized support. CONTACT

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Delivery Time Estimates (once your order has shipped)

  • United States (Duty Paid): 3–5 business days
  • United Kingdom (Duty Paid): ~10 business days
  • United Kingdom (Self-Clearance): 3–5 business days
  • Europe (Duty Paid): ~10 business days
  • Europe (Self-Clearance): 3–5 business days
  • Rest of the World (Self-Clearance): 3–5 business days

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