[Available 10/3 at 10 PM] Tanzanian Cobalt Spinel 3.6mm/0.187ct Loose Stone, JGL Origin Report Included

This beautiful blue and the hard luster characteristic of spinel with a Mohs hardness of 8. Not all blue spinel is "cobalt spinel"; only those with absorption originating from cobalt, confirmed through spectroscopic analysis, are classified as cobalt spinel. This is a cobalt blue spinel from Tanzania that offers high transparency and a vibrant blue hue. The brilliant sparkle emitted from its round cut is also captivating.This is a top-color hue for a Tanzanian cobalt blue spinel. It comes with a gemstone origin report from the Japan Germany Gemological Laboratory (JGL).

・Type: Loose (natural stone)
・Stone Name: Cobalt Spinel
・Weight: 0.187ct
・Size: 3.6×3.6mm
・Shape: Round cut
・Blemishes/Chips: S
・Inclusions: S
・Notes: ---
・Accessories: Gemstone report (JGL), loose stone case (or a clear zip bag if it does not fit)

▷ Jewelry customization available
If you would like to have this stone set in jewelry, please order it along with your preferred setting from the links below.
・[Select from Stone] Simple Order
・[Select from Stone] Semi-Order
※If you would like an image of the stone set in a frame, would like to discuss a full custom order, or have any other questions or concerns, please feel free to contact us here.
※Rough stones cannot be processed. Additionally, some stones may not be eligible for settings.

※ While we strive to ensure that the photos represent the actual color of the stones, they may appear slightly different depending on the lighting conditions during photography or your monitor settings. Some photos may have been taken using a penlight.

※ For products featuring UV fluorescence photos, the images are taken using a 365nm wavelength blacklight. If you use a light with a different wavelength (e.g., around 395nm), the fluorescence may appear weaker or be difficult to observe. The blacklight used by our store can be found here.

※ For information regarding blemishes, chips, treatments, and inclusions, please see here.

※ For other frequently asked questions, please see here.


karatz_item_id: 12564605