

















Nigerian Cobalt Garnet 0.095ct Loose with Certificate
Did you know that spinel, a popular gemstone known for its rich color variations and August birthstone, is actually a group name? The spinel we usually refer to is primarily composed of magnesium. This particular stone is a gahnite, where the magnesium has been replaced by zinc. Please enjoy the straight brilliance that is somewhat similar to spinel.
This is a cobalt gahnite cut by Sri Lankan master cutter Mr. Sanje. A certificate of authenticity is included.
・Type: Loose stone (natural stone)
・Stone name: Gahnite
・Weight: 0.095ct
・Size: 2.5×2.4mm
・Shape: Cushion Cut
・Scratches/Chips: S
・Inclusions: S-A+
・Accessories: Certificate of authenticity (JTL (Jewel Trading Laboratory)), loose stone case (if it doesn't fit, a clear zip case)
* We strive to make the photos the same color as the actual product, but due to the lighting conditions during shooting and your monitor environment, the actual product may look slightly different. Also, some photos may have been taken using a penlight.
* For information on scratches, chips, treatments, and inclusions, please see here.
* For other frequently asked questions, please see here.
karatz_item_id: 12562396
Choose options
































![[22602719 Posted] [Calafuri] Pt900/Pt850 Pink Tourmaline 1.10ct Diamond 0.02ct Pendant (Necklace) with Certificate](http://store.karatz.jp/cdn/shop/files/P8201335_0b8bc033-b13e-40fc-811d-d23e8ce639ce.jpg?v=1787965565&width=2870)
![[Listed in 22602716] [Colorfuri] K18WG Alexandrite 0.32ct Diamond 0.29ct Pendant Top with Certificate](http://store.karatz.jp/cdn/shop/files/collage_a2330eb3-6c4f-41e4-a644-3ee675d8ef48.png?v=1787965364&width=2000)
![[Published in 22602715] [Colorful] K18WG Alexandrite 0.64ct Diamond 0.04ct Pendant Top (Necklace Top) with Identification Report](http://store.karatz.jp/cdn/shop/files/collage_d65e1552-d979-4aeb-b60e-a5ba3ca1b2ad.png?v=1787965124&width=2000)
![[Published as 22602712] [Colorful] Pt900 Grossular Garnet 1.31ct Diamond 0.24ct Ring with Appraisal Report](http://store.karatz.jp/cdn/shop/files/P8190116_8f2918b4-96e0-4f40-ae59-160857a6b0b4.jpg?v=1787964834&width=4000)












![[Jeweler's tools] 4-piece set including loupe (10x magnification), tweezers, and 2 loose stones](http://store.karatz.jp/cdn/shop/files/P4130575.jpg?v=1776126091&width=4000)