[Listed as 12564195] Tanzanian Sapphire 0.622 ct Loose Stone

Sapphire, a famous and well-known gemstone. The mineral is corundum, just like ruby, but all corundum that is not red is called sapphire, hence its wide variety of colors. With a hardness of 9, sapphire is the second hardest gemstone after diamond. Sapphire is a very durable and easy-to-handle gemstone, with high hardness, toughness, and stability.

This is a sapphire from Tanzania that was purchased as unheated, but no unheated inspection has been performed. An identification report is included. Please note that the identification report may state "heating is usually performed," but this does not mean that heat treatment has been confirmed; it is an expression used when an inspection to guarantee unheated status has not been performed, among other situations. For more details, please see "Gemstones that are generally heat-treated."


・Type: Loose stone (natural stone)
・Gemstone name: Sapphire
・Weight: 0.622ct
・Size: 4.9×4.2mm
・Shape: Emerald cut
・Scratches/Chips: S
・Inclusions: A+
・Remarks: Heating is usually performed.
　*Sapphire is generally a heat-treated gemstone, but this product has not been definitively identified as heated through standard inspections such as microscopy. Advanced inspections by a gemological laboratory are required to definitively determine whether it is heated or unheated.
・Accessories: Identification report (JTL (Jewel Trading Laboratory)), loose stone case (clear zip case if it doesn't fit)


▷Jewelry customization available
If you would like jewelry customization, please order with your desired setting from the link below.
・【Choose from stone】Simple Order
・【Choose from stone】Semi-Order
※If you would like an image photo of the stone placed in the setting, would like to consult about a full custom order, or have any other questions, please feel free to contact us here.
※Rough stones are not eligible. Also, some stones may not be eligible.


※ While we strive to make photos match the actual colors, there may be slight differences from the actual product due to lighting conditions during shooting, or your monitor environment. Also, some photos may be taken using a penlight.


※ For products with UV fluorescence photos, photos are taken using a 365nm wavelength black light. If you use a light with a different wavelength (e.g., around 395nm), the fluorescence may appear weak or be difficult to confirm. The black light we use is here.


※ For scratches/chips, treatment, and inclusions, please see here.


※ For other frequently asked questions, please see here.


karatz_item_id: 12564195