





























Tanzanite from Tanzania 1.878ct Loose Gemstone [Listed as 12563990]
Tanzanite is a captivating gemstone known for its "pleochroism," appearing in different colors depending on the viewing angle. The various shades of blue, such as blue, bluish-purple, and indigo, dancing within the stone are truly mesmerizing. The name "Tanzanite" was, in fact, coined by Tiffany & Co.
This particular tanzanite from Tanzania boasts high clarity and brilliance. It features a precise cut that prevents any color leakage when viewed from the front. An appraisal certificate is included.
・Type: Loose Stone (Natural Stone)
・Stone Name: Tanzanite
・Weight: 1.878ct
・Size: 8.1×6.1mm
・Shape: Oval Cut
・Scratches/Chips: S
・Inclusions: S
・Remarks: Usually heated.
*Tanzanite is generally a gemstone that has been heated. As it is currently difficult to distinguish between heated and unheated stones with current appraisal techniques, the treatment is stated as "Usually heated."
・Accessories: Appraisal Certificate (JTL (Jewel Trading Laboratory)), Loose stone case (if it doesn't fit, a clear zip case)
▷Jewelry customization available
If you wish to customize your jewelry, please place an order with your desired setting 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, wish 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 for customization.
※ While we strive to ensure that the photos display the same color as the actual product, there may be slight differences due to lighting conditions during photography or your monitor environment. Additionally, some photos may be taken using a penlight.
※ For products displaying UV fluorescence photos, a blacklight with a wavelength of 365nm is used for photography. If you use a light with a different wavelength (e.g., around 395nm), the fluorescence may appear weak or be difficult to confirm. The blacklight we use is here.
※ For information on scratches/chips, treatments, and inclusions, please see here.
※ For other frequently asked questions, please see here.
karatz_item_id: 12563990
Choose options






























Tanzanite from Tanzania 1.878ct Loose Gemstone [Listed as 12563990]
Sale price¥69,800
Regular price






![[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/collage_f4ce5d64-8804-46cd-8a67-6e5dfa2be8a9.png?v=1785924412&width=4000)
![[On Sale 10 PM, June 7] *Limited to 3 Sets* 1.0ct/D/VS-VVS/IDEAL Lab-Grown Diamond (Synthetic Diamond) & 2 Rare Cabochon Stones (Total of 3 Stones Included) *Multiple Purchase Discount Available*](http://store.karatz.jp/cdn/shop/files/collage_07f6900d-fa8d-4bc4-acda-dc4cf0e8fed7.png?v=1785923452&width=4000)
![[On Sale 10 PM, June 7] *Limited to 3 Sets* 1.0ct/D/VS-VVS/IDEAL Lab-Grown Diamond (Synthetic Diamond) & 2 Rare Cabochon Stones (Total of 3 Stones Included) *Multiple Purchase Discount Available*](http://store.karatz.jp/cdn/shop/files/collage_ee8309d3-5bb0-4cb8-b162-fd9ce98dae4e.png?v=1785924238&width=4000)
![[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/collage_d85e6b2e-52be-4e3d-9b49-b7afa91b3f4d.png?v=1785987595&width=4000)
![【#202607 Akihabara Pop-up Store - Currently Removed for Display】[Colorfuri] Pt900 Black Opal 0.83ct / Diamond 0.62ct Ring with Certificate](http://store.karatz.jp/cdn/shop/files/P4085602_239fb724-e8c8-4f49-8fab-65e692522cdb.jpg?v=1785992300&width=4000)

![[Published 12563933] Brazilian Rubellite 1.100ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P7313058_04b1c2a1-4e5e-48af-bd45-7d19df69c5ff.jpg?v=1785731873&width=2695)
![[Listed on 12563962] Madagascar Padparadscha Sapphire 0.314 ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P7242073_bb1c6b45-7eec-4946-b9ae-cf987da714ae.jpg?v=1785731541&width=3012)

















![[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)