

















[On sale July 15 at 10 PM] Madagascar Grandidierite 0.171ct Loose Gemstone with Certificate
Grandidierite is an attractive gemstone with a unique blend of blue and green hues. Its color variations, ranging from bluish to greenish tones, make it a delight for collectors. Although it was only in 2014 that gem-quality specimens were discovered, making it a relatively new stone, it has already been selected as one of the "Top 10 Rarest Gemstones in the World."
This is a grandidierite from Madagascar, offering good transparency and a rich color. It comes with a鑑別書 (identification report).
・Type: Loose stone (natural stone)
・Stone name: Grandidierite
・Weight: 0.171ct
・Size: 4.8×2.8㎜
・Shape: Pear shape
・Scratches/Chips: S
・Inclusions: A+
・Remarks: ---
・Accessories: Identification Report (JTL (Jewelry Trading Laboratory)), Loose stone case (if it doesn't fit, a zip-lock clear case)
▷Jewelry Customization Available
If you would like jewelry customization, please order it along with your preferred setting from the link below.
・【Choose Your Stone】Simple Order
・【Choose Your Stone】Semi-Order
*If you'd like an image of the stone in a setting, want to discuss 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 for customization.
※ While we strive to ensure the photos accurately represent the actual color, the actual product may appear slightly different due to lighting conditions during photography or your monitor settings. Also, some photos may have been taken using a penlight.
※ For products that include UV fluorescence photos, they were taken using a 365nm wavelength blacklight. If you use a different wavelength light (e.g., around 395nm), the fluorescence may appear weaker or be harder to see. The blacklight we use can be found here.
※ For details on scratches/chips, treatment, and inclusions, please refer here.
※ For other frequently asked questions, please refer here.
karatz_item_id: 12563740
Choose options



![[Use the #202509 Campaign] 2025 New Year's Lucky Bag 🎍 Gem Gacha Lucky Bag with 4 or more gemstones (worth ¥25,000) [Discount for bulk purchase of lucky bags]](http://store.karatz.jp/cdn/shop/files/gazou.png?v=1785994448&width=1254)
![Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_9109ca4b-cf51-4ed2-9859-1a3f6b317f8b.png?v=1787121427&width=2000)


![Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_e3bc2b9c-c542-42ee-9a4d-e3f647d927ae.png?v=1787118079&width=2000)
![[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/2026-08-2115.28.22.png?v=1787293728&width=1285)
![[On sale at 10 PM on 7/X] "Limited 10 Stones" Pink Diamond Gacha "Multiple Purchase Discount Available"](http://store.karatz.jp/cdn/shop/files/2026-08-2017.07.21.png?v=1787213265&width=1281)

![[6/ 10 PM JST Release] 《Limited to 11 Stones》Bicolor Gemstone Gacha featuring Paraiba Tourmaline and Euclase 《Bulk Purchase Discount Available》](http://store.karatz.jp/cdn/shop/files/collage_7b7dc323-95d7-4adf-b87d-7f158eb4b182.png?v=1787295459&width=2000)

















![[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)
