












【Lottery Sale 0428_2_05】American Neptunite 0.859ct Loose Gemstone with Certificate
Click here to apply for the lottery sale.
Neptunite is a rare mineral named after Neptune, the Roman god of the sea, and was discovered particularly in San Benito, California, alongside blue benitoite. It once attracted attention for its coexistence with benitoite, but now that benitoite production has decreased, neptunite from San Benito, USA, has also become a rare existence. A JTL appraisal report is included.
・Type: Loose stone (natural stone)
・Stone name: Neptunite
・Weight: 0.859 ct
・Size: 7.2 x 4.9 mm
・Shape: Cushion cut
・Scratches/Chips: A+
・Inclusions: -
・Accessories: Appraisal report (JTL (Jewel Trading Laboratory)), loose stone case (clear zip case if it doesn't fit)
▷Jewelry customization available
If you wish to customize your jewelry, please order it along 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.
※ We strive to ensure that the photos are the same color as the actual product, but due to the lighting conditions at the time of shooting and the monitor environment you are using, the actual product may look slightly different. In addition, some photos may be taken using a penlight.
※ For information on scratches/chips, treatment, and inclusions, please see here.
※ For other frequently asked questions, please see here.
karatz_item_id: 12562748
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/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)
![[Sales start 10 PM, Aug. 10] Andesine-Labradorite Gacha with a Chance to Win a Dandelion Cut Worth 69,800 JPY (Limited to 12 Stones) (Plus 1 Andesine-Labradorite Stone) [Bulk Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/collage_9d631197-f87c-42dd-94c8-54df7bf67e47.png?v=1786088702&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)