














Unheated Blue Sapphire from Madagascar, 1.380ct Loose, AIGS
Sapphire is a well-known stone. This is the most classic blue sapphire. With a hardness of 9, sapphire is the second hardest gemstone after diamond, and is also tough, stable, and easy to care for. This is a rare, unheated blue sapphire.
Comes with an AIGS certificate of authenticity.
Type: Loose (natural stone)
Stone name: Unheated blue sapphire
・Weight: 1.380ct
・Size: 6.3 x 5.8 mm
・Shape: Oval cut
Scratches/chips: S
Inclusions: A+
·remarks:---
Accessories: Certificate of Authenticity (AIGS), loose case (if it does not fit, a clear zippered case will be provided)
▷We accept jewelry processing.If you would like to have your jewelry processed, please order along with the frame of your choice from the link below.
・Simple order [Select by stone]
・[Select from stones] Semi-order
*If you would like an image photo of the stone in the frame, would like to discuss a full order, or have any other questions or concerns, please feel free to contact us here .
*Rough stones are not available. There are also some stones that cannot be used.
*We strive to make the colors in the photos as close to the actual product as possible, but they may look slightly different from the actual product depending on the lighting conditions during photography and the monitor settings you are using. Also, some photos may have been taken using a penlight.
*For information on scratches, chips, treatments, and inclusions, please click here .
*For other frequently asked questions, please click here .
karatz_item_id: 12561677
Choose options







![[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"](http://store.karatz.jp/cdn/shop/files/2026-06-0412.31.27.png?v=1780543913&width=1282)





















![[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)
![[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery](http://store.karatz.jp/cdn/shop/files/collage_c90ad5e1-b47a-49f9-b7d7-d75e04cd883a.png?v=1724920180&width=2000)
