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30/04/2026 11:31 pm

4.57ct Natural Cobalt Blue Spinel VS – Unheated Cushion Cut AIG Certified

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细节
存货单位
CS-1
尺寸(毫米)
11.1 x 9.1 x 5.3mm
重量 (cts)
4.57
Certificate Gem Lab
AIG
Treatment
No Treatment
Shape
Cushion
Type
Faceted
Clarity
VS
Certified Gemstones
是的
颜色
描述

Gemstone Highlights

  • Gemstone: Natural Cobalt Spinel

  • Weight: 4.57 Carats

  • Cut: Cushion Cut (classic, well-proportioned)

  • Clarity: VS (Very small inclusions)

  • Color: Electric “Cobalt Blue”

  • Origin: Sri Lanka (Ceylon)

  • Treatment: Unheated (No heat, no enhancement)

  • Certification: AIG (Authenticity guaranteed)

  • Rarity: Extremely rare – less than 0.05% of all spinels show this cobalt spectrum

About this Spinel
This unheated cobalt spinel displays an intense, vivid electric blue color rarely seen in the gem world. With an impressive size of 4.57ct, Very small inclusions clarity (VS), and a precision cushion cut, this gem is perfectly suited for high-end jewelry or as an investment-grade collector’s stone.

Why Cobalt Spinel?
Known as one of the rarest spinel varieties, cobalt spinels with this intense saturation and clarity are among the most sought-after colored gemstones worldwide. Their scarcity and natural beauty make them highly valuable to both designers and serious gem collectors.

Certification
This gemstone comes with an AIG certificate, verifying its authenticity, natural origin, and untreated status.

Price Advantage
Comparable cobalt spinels of this size, quality, and certification often retail above $8,000. Don’t miss this opportunity to secure one at a competitive price.

Estimated Retail Value: $6,000

Gem Details:

  • SKU: CS-1

  • Treatment: None (Unheated, Untreated)

  • Transparency: Transparent

  • Luster: Excellent

  • Shape: Cushion Cut

Perfect for: Collectors • High-End Jewelry • Investment • Custom Design • Rare Gem Enthusiasts

Don’t miss this rare opportunity!
Place your bid now and secure this natural unheated cobalt spinel before it’s gone.

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4.57ct Natural Cobalt Blue Spinel VS – Unheated Cushion Cut AIG Certified

noblecutgems

Bavaria, 德国
拥有者 noblecutgems
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送货细节

成本:
过境:
21通过DHL计数天数
上限为:
发货自:
德国

付款方式

  • paypal

概述

列表类型 : Premium
产品编号 : 3158736
预计建议零售价 :
起拍价 :
开始 : 31st March 2026 11:31 pm PDT
结束 : 30th April 2026 11:31 pm PDT
* 所有价格均以:货币为单位

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