[Sales start August 2nd at 10 PM] Madagascar blue sapphire 0.662 ct loose gemstone with a certificate

Sapphire is a well-known and famous stone. While the mineral is corundum, like ruby, all corundum that is not red is called sapphire. This is a blue sapphire, the most common blue variety. With a hardness of 9, sapphire is the second hardest gemstone after diamond, and its high toughness and stability make it an easy gemstone to care for.

This blue sapphire has high transparency and a deep color, close to royal blue. It comes with a鑑別書 (identification report).

・Type: Loose stone (natural stone)
・Stone name: Blue Sapphire (Sapphire)
・Weight: 0.662ct
・Size: 6.3 x 4.4mm
・Shape: Oval cut
・Scratches/Chips: S
・Inclusions: S
・Remarks: Heat treatment has been performed.
　*Sapphires are generally gemstones that have undergone heat treatment.
・Accessories: Identification report (JTL (Jewel Trading Laboratory)), loose stone case (if it doesn't fit, a clear zip-lock case)

▷Jewelry Customization Available
If you would like jewelry customization, please order your desired setting along with the stone from the link below.
・【Choose Your Stone】Simple Order
・【Choose Your Stone】Semi-Order
*If you would like an image of the stone on a setting, want to discuss a full custom order, or have any other questions or inquiries, please feel free to contact us here.
*Rough stones are not eligible. Also, some stones may not be eligible.

*We strive to ensure that the photos show 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 be taken using a penlight.

*For products with UV fluorescent photos, we use a 365nm wavelength blacklight. If you use a light with a different wavelength (e.g., around 395nm), the fluorescence may appear weak or difficult to confirm. The blacklight we use is here.

*Please refer to here for information on scratches/chips, treatments, and inclusions.

*For other frequently asked questions, please refer to here.


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