10.02 ct “Cobalt Blue”_Unheated Tanzania Blue Spinel_ Perfect Octagon Step-Cut

“Cobalt Blue Spinel: 10.02 ct Natural Perfect Octagonal Gem”

This striking cobalt blue spinel presents precise emerald-cut geometry that emphasizes clean, linear facets and strong light return. Weighing 10.02 ct, it measures 14.5 × 11 × 7.3 mm, yielding a balanced, elongated profile that accentuates the stone’s superb symmetry. The deep cobalt hue is richly saturated, with transparent clarity allowing a lively play of light across each facet. The well-formed facets and high luster produce a crisp, mirror-like brilliance, with color remaining consistently vivid from all angles.

Why You’ll Love It

• Vivid cobalt-blue hue: A deep, oceanic color prized by collectors for its saturated, even tone.
• Perfect octagon step-cut: Precision geometry that enhances fire, scintillation, and depth.
• Unheated: 100% natural—no treatments or enhancements.
• Durable: Spinel rates 8 on the Mohs scale, offering excellent wear resistance for daily wear.
• Heritage: Mahenge spinel, renowned for rarity and prestige, carries a timeless allure.

**Shipping & Returns**
Tracked, insured worldwide shipping. 14-day inspection window—refund if it’s not your vibe (buyer pays return).

**Certification & Custom Orders**
_*Certificate of authenticity available upon request.*
_*We’re delighted to collaborate on bespoke designs tailored to your vision. From precious metal selection to setting style and sizing, our team will guide you through every detail to create a piece that’s uniquely yours.*

**Note: Photos taken in bright neutral light to show true color; screens may vary.**