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cobalt spinel

Spinel is one of the birthstones for August. Among spinels, those that contain a large amount of cobalt and exhibit a bright blue color are called cobalt spinels. The shade of blue is thought to change depending on the cobalt content, and the darker the blue, the more valuable it is.

Karatz GemMagazine
" Cobalt Spinel "

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【10/17 22時販売】《残り僅か》カラーチェンジガチャ💎ミャンマー産カラーチェンジジルコン、カラーシフトサファイア、カラーシフトコバルトスピネルなど《複数購入割引有》

【10/17 22時販売】《残り僅か》カラーチェンジガチャ💎ミャンマー産カラーチェンジジルコン、カラーシフトサファイア、カラーシフトコバルトスピネルなど《複数購入割引有》 Sale price¥4,980
[On sale September 7th at 10 PM] Limited to 15 stones: ¥60,000 worth of Musgravite, Taaffeite, Cobalt Garnite, Spinel & Friends Gacha, and more (bonus: 1 Platinum Spinel) [Multiple purchase discounts available]

[On sale September 7th at 10 PM] Limited to 15 stones: ¥60,000 worth of Musgravite, Taaffeite, Cobalt Garnite, Spinel & Friends Gacha, and more (bonus: 1 Platinum Spinel) [Multiple purchase discounts available] Sale price¥8,800
[Available at 10 PM on September 6th] Limited to 10 Blue Spinel Gacha - Includes 2 Cobalt Spinel (including color-shifted type) with Japanese and German appraisal certificates - Bonus Synthetic Cobalt Spinel (Multiple purchase discounts available)

[Available at 10 PM on September 6th] Limited to 10 Blue Spinel Gacha - Includes 2 Cobalt Spinel (including color-shifted type) with Japanese and German appraisal certificates - Bonus Synthetic Cobalt Spinel (Multiple purchase discounts available) Sale price¥5,980
タンザニア産コバルトスピネル 0.458ctルース

Tanzanian Cobalt Spinel 0.458ct Loose Stone with Certificate of Authenticity Sale price¥69,800
コバルトガーナイト 0.216ctルース

Nigerian Cobalt Garnite 0.216ct Loose Stone, Japan-Germany Exchange Sale price¥45,800
Pt950 スリランカ産コバルトスピネル 0.697ct リング

Pt950 Sri Lankan cobalt spinel 0.697ct ring by Nikkei Sale price¥98,000
ベトナム産コバルトスピネル（カラーチェンジ） 0.082ctルース

Vietnam Cobalt Spinel (Color Change) 2.7mm/0.082ct Loose Stone, Japan-Germany Exchange Sale price¥59,800
ナイジェリア産コバルトガーナイト 0.133ctルース

Nigerian Cobalt Garnite 0.133ct Loose Stone (Color Shift Type) JTL Catalog Sale price¥25,800
ナイジェリア産コバルトガーナイト 0.135ctルース

Nigerian Cobalt Garnite 0.135ct Loose Stone (Color Shift Type) JTL Catalog Sale price¥25,800
タンザニア産コバルトスピネル 0.118ctルース 日独

Tanzanian Cobalt Spinel (Blue Spinel) 0.118ct Loose Stone Japan-Germany Sale price¥29,800
ベトナム産コバルトスピネル 0.022ctルース 日独鑑

Vietnam Cobalt Spinel (Color Shift) 0.022ct Loose Stone, Japan-Germany Exchange Sale price¥25,800
ベトナム産コバルトスピネル（カラーシフト） 0.025ctルース 日独鑑

Vietnam Cobalt Spinel (Color Shift) 0.025ct Loose Stone, Japan-Germany Exchange Sale price¥25,800
ナイジェリア産コバルトガーナイト 0.242ctルース JTL鑑

Nigerian Cobalt Garnite 0.242ct Loose Stone JTL Catalog Sale price¥39,800
Tanzania Cobalt Spinel 0.211ct Loose Stone JTL Catalog

Tanzania Cobalt Spinel 0.211ct Loose Stone JTL Catalog Sale price¥29,800
Nigerian Cobalt Garnite 0.233ct Loose Stone JTL Catalog

Nigerian Cobalt Garnite 0.233ct Loose Stone JTL Catalog Sale price¥45,800
スリランカ産コバルトガーナイト 0.214ctルース JTL鑑

Nigerian Cobalt Garnite 0.214ct Loose Stone JTL Catalog Sale price¥32,800
スリランカ産コバルトスピネル 0.281ctルース

Sri Lankan cobalt spinel 0.281ct loose stone Sale price¥59,800
スリランカ産コバルトスピネル 0.676ctルース　日独鑑

Sri Lankan Cobalt Spinel 0.676ct Loose Stone (Blue Spinel) Nikkei Sale price¥79,800
コバルトガーナイト 0.155ctルース

Cobalt Garnite 0.155ct loose (sugar loaf cut) Sale price¥12,800
ベトナム産コバルトスピネル 2mm/0.031ctルース 日独鑑

Cobalt spinel from Vietnam 2mm/0.031ct loose Japanese-German edition Sale price¥59,800
Sold out Cobalt Garnite 1 stone (discount available for multiple purchases)

Cobalt Garnite 1 stone (discount available for multiple purchases)

Sold out [Available at 10 PM on September 6th] Limited to 10 Blue Stones Gacha (Paraiba Tourmaline, Cobalt Garnite, Indigo Tourmaline with Certificate of Authenticity, Zimbabwean Euclase with Certificate of Authenticity) [Multiple Purchase Discounts Available]

[Available at 10 PM on September 6th] Limited to 10 Blue Stones Gacha (Paraiba Tourmaline, Cobalt Garnite, Indigo Tourmaline with Certificate of Authenticity, Zimbabwean Euclase with Certificate of Authenticity) [Multiple Purchase Discounts Available]
Sold out 【10/12 22時販売】《限定10石》ブルー石ガチャ（ブラジル産パライバトルマリン0.088ct、ジンバブエ産ユークレース、コバルトガーナイト）《複数購入割引有》

【10/12 22時販売】《限定10石》ブルー石ガチャ（ブラジル産パライバトルマリン0.088ct、ジンバブエ産ユークレース、コバルトガーナイト）《複数購入割引有》

Sold out [Available at 10 PM on August 9th] [Limited to 2 stones] 1 Nigerian Cobalt Garnite [Multiple purchase discounts available]

[Available at 10 PM on August 9th] [Limited to 2 stones] 1 Nigerian Cobalt Garnite [Multiple purchase discounts available]
Sold out タンザニア産コバルトスピネル 0.284ctルース

Cobalt spinel from Tanzania 0.284ct loose Japanese and German
Sold out スリランカ産コバルトスピネル 0.647ctルース

Cobalt spinel from Sri Lanka 0.647ct loose Japanese German edition
Sold out ベトナム産コバルトスピネル 0.063ct原石 (カラーシフト)

Vietnam Cobalt Spinel Rough Stone 0.063ct (Color Shift)
Sold out ベトナム産コバルトスピネル 0.331ct原石

Vietnam Cobalt Spinel 0.331ct Rough Stone
Sold out ベトナム産コバルトスピネル 0.142ct原石

Vietnam Cobalt Spinel 0.142ct Rough Stone
Sold out ベトナム産コバルトスピネル 0.088ct原石

Vietnam Cobalt Spinel 0.088ct Rough Stone
Sold out ベトナム産コバルトスピネル 0.085ct原石

Vietnam Cobalt Spinel 0.085ct Rough Stone (Color Shift)
Sold out ベトナム産コバルトスピネル 0.078ct原石

Vietnam Cobalt Spinel 0.078ct Rough Stone
Sold out ベトナム産コバルトスピネル 0.075ct原石（カラーシフト）

Vietnam Cobalt Spinel 0.075ct Rough Stone (Color Shift)
Sold out ベトナム産コバルトスピネル 0.063ct原石

Vietnam Cobalt Spinel 0.063ct Rough Stone (Color Shift)
Sold out 非加熱コバルトスピネル（コバルトブルースピネル） 0.740ctルース（シールドカット） GIA

Unheated Cobalt Spinel (Cobalt Blue Spinel) 0.740ct Loose (Shield Cut) GIA
Sold out ナイジェリア産コバルトガーナイト 0.707ctルース

Nigerian Cobalt Garnite 0.707ct Loose Stone JTL Catalog
Sold out Nigerian Cobalt Garnite 0.311ct Loose Stone JTL Catalog

Nigerian Cobalt Garnite 0.311ct Loose Stone JTL Catalog
Sold out 【スタッフセレクション】タンザニア産カラーチェンジコバルトスピネル 0.249ctルース（セミオーダーメイドセッ

[Staff Selection] Tanzania Color Change Cobalt Spinel 0.249ct Loose Stone (Semi-Custom Made Set)
Sold out コバルトガーナイト 0.251ctルース

Cobalt Garnite 0.251ct loose
Sold out コバルトガーナイト 2.909ctルース

Cobalt Garnite 2.909ct loose
Sold out K18コバルトスピネル0.154ct リング 日独付 - KARATZ STORE｜カラッツSTORE

K18 cobalt spinel 0.154ct ring with Japanese and German

Sold out Pt900コバルトガ―ナイト0.04ct / 0.04ct ピアス - カラッツSTORE

Pt900 Cobalt Garnite 0.04ct / 0.04ct Earrings

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