



















Afghanistan Stibiotantalite 0.334ct Loose Stone, Japan-Germany Mirror
Stibiotantalite. A rare stone containing antimony (from the Greek: stibio). It has a strong yellow color and is very rarely encountered, as gem-quality specimens are in limited circulation. While its name is similar to manganotantalite, it belongs to a different mineral group. It comes with a laboratory report from the Japan Germany Gemmological Laboratory (JGL). At 0.3 ct, this is a relatively large size for a gem-quality stibiotantalite.
・Type: Loose stone (natural)
・Stone name: Stibiotantalite
・Weight: 0.334ct
・Size: 3.7×3.2mm
・Shape: Trilliant cut
・Scratches/Chips: S
・Inclusions: A+
・Accessories: Appraisal report (Japan Germany Gemmological Laboratory), loose stone case (or a clear zip-top bag if the stone does not fit)
▷Jewelry processing available
If you would like jewelry processing, please order from the links below along with your preferred setting.
・[Select from Stone] Simple Order
・[Select from Stone] Semi-Order
※If you would like an image of the stone placed in a setting, wish to discuss a full custom order, or have any other questions, please feel free to contact us here.
※Rough stones are not eligible. Additionally, some stones cannot be processed.
※ We strive to ensure that the photos represent the colors of the actual product; however, colors may appear slightly different depending on lighting conditions during photography and your monitor settings. Some photos may also be taken using a penlight.
※ For information on scratches, chips, treatments, and inclusions, please see here.
※ For other frequently asked questions, please see here.
karatz_item_id: 12543587
Choose options



![[10/2 (Fri) 10 PM Restock] Authentic Gemstone Illustrated 3D Stickers Vol. 1: The Five Major Gemstones Edition](http://store.karatz.jp/cdn/shop/files/IMG_3658.jpg?v=1781061036&width=3384)
![[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 August 13th, 10 PM JST] Limited to 10 stones: Top-quality Benitoite (2mm, round cut) loose stone [Multiple purchase discount available]](http://store.karatz.jp/cdn/shop/files/PC080074_50a7da98-e5da-4a97-bdb2-a97224e584da.jpg?v=1715001409&width=3569)




![[Available 11/1 at 10 PM] 《7 stones limited》 Synthetic Cobalt Spinel (by Mr. Saint-Ger, 3mm hexagonal cut) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/2026-10-1111.00.09.png?v=1791684034&width=1246)

















![[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] Color change penlight loose set](http://store.karatz.jp/cdn/shop/files/P1010673_2976de1d-08ce-4d92-94af-524da4485c99.jpg?v=1725605083&width=4000)