












[#202607 Akihabara Pop-up Store Carry Out] [12559782 Listed] Hackmanite 0.142ct Loose
Hackmanite is a rare stone. It has the mysterious property that when exposed to a black light for 5 to 10 seconds, it changes color to a pale purple and does not return to its original color for a while. It is a relatively new type of rare stone discovered in the Kola Peninsula in Russia in the 1980s. Its low hardness means that care must be taken to avoid hitting it against hard objects.
Type: Loose (natural stone)
Stone name: Hackmanite
・Weight: 0.142ct
・Size: 4.7 x 2.5 mm
Shape: Pear shape Scratches/chips: S
Inclusions: A+
·remarks:---
Accessories: Caratz quality guarantee, loose case (if not, a clear zippered case)
▷We accept jewelry processing orders
If you would like to have your item made into jewelry, please order it along with the frame of your choice using 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: 12559782
Type: Loose (natural stone)
Stone name: Hackmanite
・Weight: 0.142ct
・Size: 4.7 x 2.5 mm
Shape: Pear shape Scratches/chips: S
Inclusions: A+
·remarks:---
Accessories: Caratz quality guarantee, loose case (if not, a clear zippered case)
▷We accept jewelry processing orders
If you would like to have your item made into jewelry, please order it along with the frame of your choice using 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: 12559782
Choose options







![[Item 12564551] Afghan Hauyne 0.082ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PA010822_fdae212e-c1d0-42d1-bbc1-88e76d38a638.jpg?v=1791206027&width=2418)
![[12564548 Listed] Afghan Hauyne 0.183ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PA010722_4324babf-6d1d-4389-8d78-1260c8938514.jpg?v=1791206242&width=2715)
![[Item No. 22602818] [Colorfully] 18K Akoya Pearl and 0.02ct Diamond Brooch with Certificate of Authenticity](http://store.karatz.jp/cdn/shop/files/P9290057.jpg?v=1790834020&width=4000)
![[Item 22602811] [Coloriful] Pt900 Pink Sapphire 0.42ct Diamond 0.05ct Ring with Appraisal Report](http://store.karatz.jp/cdn/shop/files/P9290010_8d07daad-9c48-47b1-819e-7bd3041157ae.jpg?v=1791184198&width=4000)
![[Posted on 22602705] [Colorful] K18WG Diamond 0.5ct Pendant Top (Necklace Top)](http://store.karatz.jp/cdn/shop/files/P8060423_d36ce0b8-482c-4635-b50f-e95a3f891029.jpg?v=1791204209&width=3172)
![[Lottery Sale_12] [For Winners Only] [Ref: 32501798] Internally Flawless Diamond (H&C) 4.2mm/0.280ct Loose Stone (D, IF, 3Excellent H&C) GIA](http://store.karatz.jp/cdn/shop/files/collage_13108166-7420-4e8f-a9ce-36d5a19b5023.png?v=1791123979&width=2000)
![[Lottery Sale ②_202608_04] Unheated Kashmir Sapphire 0.710ct Loose Stone GIA](http://store.karatz.jp/cdn/shop/files/P7227023_4642404f-3f88-40d5-b30d-04cfeec27b64.jpg?v=1791123165&width=3278)



![[12563017 listed] Pink Sapphire 0.143ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P9035692_5c10157e-aa71-4093-8774-997e1947ef99.jpg?v=1791103289&width=2693)
![[Item 12564297] Phenakite from Malyshevo, Russia, 1.491ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P9076471_c756de0e-6694-45b2-8f46-adb1d04de5c1.jpg?v=1791102964&width=3236)
![[Ref: 12564306] Brazilian Emerald Cat's Eye 0.582ct Loose Gemstone](http://store.karatz.jp/cdn/shop/files/P9076878_ae583146-c49d-4641-b5ef-bf4ab6bf082c.jpg?v=1791102698&width=3158)









![[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)

