[Lottery Sale] Gems featured in the gemstone encyclopedia {Fluorite from Okorus, Bloodshot Iolite, Sunstone, etc.}
Limited quantities will be sold by lottery.
The theme this time is, These gemstones are featured in KARATZ's "Gemstone Encyclopedia ." They will be on display at the KARATZ Pop-Up from July 26th (Fri) to August 1st (Thu).
Carats [Yurakucho Marui 2F] Pop-up store details 7/26 (Fri) ~ 8/1 (Thu)】
https://store.karatz.jp/blogs/news/popup202407
[Application acceptance period]
Until 23:59 on Thursday, August 1, 2024
*Winners will be contacted by email by Monday, August 5th.
Product 1: Featured in a gemstone encyclopedia [P193]
Stone type: chalcanthite rough stone (Arizona, USA)
Size: 24.7 x 22.4 mm
weight:-
Accessories: Loose Quantity: 1 Price: 8,800 yen Product ID: 50000303 
Chalcanthite has an impressive vibrant blue color.
It is said that it is often found in the form of icicles, fibers, or lumps.
Even the spiky crystals shown in the photo are adorable.
It is water-soluble and brittle, and when it absorbs moisture from the air, its crystal structure can break down over time.
Avoid leaving the crystals exposed to air.
It is also toxic, so be careful not to touch it with your bare hands.
If you do touch it, be sure to wash your hands as soon as possible. 
Product 2: Featured in a gemstone encyclopedia [P146]
Stone type: Fluorite rough stone (Okolous, Namibia)
Size: 22.1 x 28.2 mm
Accessories: Loose Quantity: 1 Price: 29,800 yen Product ID: 50000303
Fluorite is a gemstone that gives off a colorful impression, with multiple colors running in lines within a single stone.
It is produced all over the world, but its characteristics vary depending on its place of origin.
Many of the rough stones have beautiful shapes, and many people collect them as specimens.
Fluorite from the Okorus mine in Namibia is particularly popular for its color and beauty.
The fact that it is no longer produced makes it even rarer, making it one of the gemstones coveted by collectors. 
Product 3: Featured in a gemstone encyclopedia [P133]
Stone type: fluorescent green amber Size: 8.6 x 8.3
Weight: 1.293ct
Accessories: Case Quantity: 1 Price: 9,800 yen Product ID: 12554479 
Amber is a precious stone formed when the sap of ancient trees hardens and fossilizes over a long period of time.
It is known to be produced in Japan in prefectures such as Iwate and Chiba.
Some of them contain insects and other living creatures, and have attracted attention after appearing in popular movies.
Amber generally has the characteristic of fluorescing under ultraviolet light, but some species exhibit beautiful vivid blue or green fluorescence, which are called (fluorescent) blue amber or (fluorescent) green amber. 
Product 4: Featured in a gemstone encyclopedia [P47]
Stone type: Illusion chrome tourmaline (Kenya)
Size: 7.6 x 5.8
Weight: 1.108ctct
Accessories: Case Quantity: 1 Price: 25,800 yen Product ID: 12542599 
Chrome tourmaline contains chromium and has a vibrant green hue.
It is considered highly valued among green tourmalines.
Some chrome tourmalines have cracks inside them that cause them to show a rainbow-like iridescence effect, and are called iridescence chrome tourmaline or illusion chrome tourmaline (common names).
This jewel has a gorgeous impression, just like Christmas lights. 
Product 5: Featured in a gemstone encyclopedia [P46]
Stone type: Water opal (Magdalena mine, Mexico)
Size: 10.7 x 5.9
Weight: 1.067ct
Accessories: Case Quantity: 1 Price: 45,800 yen Product ID: 12540743 
Among the many different types of opals, those that are so transparent that you can see the writing underneath are called "water opals."
Opals are found all over the world, but one of the most famous is the Magdalena mine in Mexico.
Precious opals that exhibit play-of-color generally do so when light is shone on the table surface (the domed surface in the case of cabochon cuts).
However, some opals from the Magdalena mine have a stronger play-of-color when light is shone on them from behind.
They are called "contra luz opal" in Spanish.
This water opal, featured in the gemstone encyclopedia, is also a contra-luss opal, and shows strong and beautiful play of color when light comes from behind. 
Product ⑥ Featured in the Gemstone Encyclopedia [P39]
Stone type: Bloodshot Iolite Sunstone (India)
Size: 15.5×11.0
Weight: 4.910ct
Accessories: Case Quantity: 1
Price: 49,800 yen <br>Product ID: 12535455 
Among the March birthstone iolite, the one that has an aventurescent effect where the inclusions sparkle when light is shone on it and contains red inclusions called bloodshot is called "bloodshot iolite sunstone" (common name).
This gemstone is popular because of its mysterious appearance, with colorful spots emerging from the deep violet iolite, giving it the appearance of being warped into outer space.
The Bloodshot Iolite Sunstone, featured in the Gemstone Encyclopedia's "The Allure of Inclusions" page, is packed with inclusions on its surface, giving it a gorgeous look. It's an attractive piece that will make you lose track of time and want to stare at it forever. 
Product 7: Featured in the Gemstone Encyclopedia [P7]
Stone type: Moonstone Size: 17.9 x 15.8
Weight: 18.376ct
Accessories: Central Gem Laboratory sorting case Quantity: 1 piece Price: 128,000 yen <br>Product ID: 12541206 
Moonstone is widely known as the June birthstone and shows a soft, whitish light effect (called schiller or adularescence) when light is shone on it.
Some moonstones are called "blue moonstones" because they show a blue sheen when exposed to light.
Blue moonstone was once mined in Sri Lanka, but now the mines have been depleted and it is a rare gemstone that is rarely available on the market.
Currently, most of the stones sold on the market under the name "blue moonstone" are actually "peristerite," "andesine labradorite," or "white labradorite," which belong to the same feldspar group and show similar optical effects. In the gemstone name column of the identification certificate, the name of each gemstone, such as "peristerite," is written, rather than "moonstone."
This moonstone, which appears on the birthstone introduction page of the gemstone encyclopedia , is a genuine "blue moonstone," and its name on the identification certificate is also written as "moonstone."
The blue light that emerges from the light gives this piece a mysterious and gentle atmosphere. 
Product 8: Featured in the Gemstone Encyclopedia [P187]
Stone type: Lazurite (Brazil)
Size: 4.4×3.5
Weight: 0.228ct
Accessories: Certificate of Authenticity from the Japan-Germany Gemstone Laboratory, Case Quantity: 1 Price: 128,000 yen Product ID: 12540867 
The Japanese name for this stone is "Lazulite".
Since most gemstones are opaque and prone to containing inclusions, those that are colorful and highly transparent are considered highly rare.
Those with a particularly strong blue tint are popular and receive high ratings.
This gemstone, which appeared in a gemstone encyclopedia, is an incredibly beautiful piece with impeccable color and transparency, and you can't help but stare at its crystal clear blue color. 
