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15.29 ct Oval Tanzanite Gemstone – GIA Certified

Sale price$9,938.00 USD
In stock

15.29 Carat GIA-Certified Oval Tanzanite — VB 6/6

  • Weight: 15.29 carats
  • Shape: Oval cut
  • Colour: Exceptional blue-dominant tanzanite with vivid violet flashes
  • Grades as GIA "violetish Blue" - which means it is a blue dominant stone . Probably 85% blue and balance is violet. 
  • Grade: VB 6/6 — equivalent to AAA+ / heirloom quality
  • Clarity: Exceptionally clean and visually flawless
  • Certification: GIA certified
  • Quality: Among the finest 1% of all tanzanite mined

A remarkable 15.29 carat oval tanzanite with exceptional size, clarity and depth of colour. Larger stones of this calibre allow tanzanite’s colour to develop fully, producing the rich, velvety blue for which the finest gems are prized.

The stone exhibits a strong blue-dominant tone, complemented by vivid flashes of violet as it moves beneath the light. It is beautifully cut, highly symmetrical and exceptionally well proportioned, with minimal unnecessary weight hidden beneath the stone. As a result, it presents particularly large and impressive for its carat weight.

Please note that the 360-degree video occasionally shows pale-blue reflections that are not visible in the stone in person. We were trialling a new photographer, and the lighting did not capture the colour completely accurately. The video is nevertheless useful for viewing the stone’s excellent cutting, symmetry and proportions.

This gemstone sits at the highest level of tanzanite quality: VB 6/6, equivalent to AAA+ or heirloom grade, representing approximately the top 1% of all tanzanite mined.

A rare, high-impact gemstone with genuine collector appeal.

100% Natural Tanzanite

"No Questions Asked", Free 14 Day Return Policy

Free, Fully Insured, Global Delivery

GEMSTONE DETAILS

Carat Weight: 15.29Ct
Cut Shape: Oval
Color: Violetish Blue
GIA Color Grade: vB 6/6 (Hue : violetish Blue, Tone : 6, Saturation : 6)
Location of Mine: Merelani, Tanzania

Clarity: Vvs (Flawless)
Dimensions: 18.58 x 14.01 x 8.46
Color Intensity: Intense
Treatment: Simple Heat Treatment (Standard)

VIEW CERTIFICATE

15.29 ct Oval Tanzanite Gemstone – GIA Certified
15.29 ct Oval Tanzanite Gemstone – GIA Certified Sale price$9,938.00 USD

Color intensity scale

pastel

Medium

Strong

Deep

Intense

Gem Excellence Graph

The Gem Excellence Graph was devised by our GIA gemologists to provide a visual "snapshot" of gemstones' pedigree

Can’t find the shape or size you’re looking for?

Behind the scenes, we have thousands of tanzanites not listed online.

Our gemologist Linda Kennedy will be delighted to open the vault and personally select the perfect stone for you!