![[1/11 22:00 Sale] Brazilian Blue Tourmaline 0.827ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P1088505_78dc3187-5c6c-49c4-b39d-0b9af87a7a5f.jpg?v=1767992160&width=3060)
[1/11 22:00 Sale] Brazilian Blue Tourmaline 0.827ct Loose Stone
Sale price¥19,800
![[On Sale at 10 PM on January 12th] 0.245ct Rough Diamond (with Trigon)](http://store.karatz.jp/cdn/shop/files/P1087915.jpg?v=1768086183&width=4000)
![[1/12 22:00 Sale] Diamond 0.604ct Rough Stone](http://store.karatz.jp/cdn/shop/files/P1087995.jpg?v=1768086372&width=4000)
[1/12 22:00 Sale] Diamond 0.604ct Rough Stone
Sale price¥12,800
![[On sale at 10 PM on January 12th] [Takeshi Yamamoto] Brazilian Dendritic Quartz 25.875ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P1088181.jpg?v=1768172825&width=4000)
![[On Sale at 10 PM on January 14th] Brazilian Bicolor Topaz (Bicolor Blue Topaz) 2.884ct Loose Stone (Untreated)](http://store.karatz.jp/cdn/shop/files/P9128090_be12cc20-4bc3-45fa-824c-994dc0683bbd.jpg?v=1768280006&width=2772)
Synthetic rutile 5.8mm/0.904ct loose stone
Sale price¥12,800
Synthetic rutile 5mm/0.553ct loose stone
Sale price¥12,800
Paraiba tourmaline from Brazil 0.066ct loose
Sale price¥18,800
Paraiba tourmaline from Mozambique 0.270ct loose
Sale price¥18,800
Mexican Water Opal 1.790ct Loose (Contralus Opal)
Sale price¥29,800
Synthetic moissanite (gray blue) 1.701ct loose
Sale price¥12,800
Diamond 0.120ct loose (G, VS2, Excellent H&C)
Sale price¥25,800
American red beryl 0.141ct loose
Sale price¥14,800
American red beryl 0.208ct loose
Sale price¥22,800
American red beryl 0.115ct loose
Sale price¥12,800
American red beryl 0.143ct loose
Sale price¥15,800
![[On Sale at 10 PM on January 17th] Tanzanite from Tanzania 0.680ct Loose Stone](http://store.karatz.jp/cdn/shop/files/S__227811339_57c11a81-db13-4386-a0e3-70fd2fe4c513.jpg?v=1768527612&width=1063)
![[On Sale at 10 PM on January 17th] 3.583ct Australian Black Opal Loose Stone (Double-Sided)](http://store.karatz.jp/cdn/shop/files/P1150158.jpg?v=1768478549&width=4000)
![[On Sale at 10 PM on January 17th] Australian Black Opal 0.758ct Loose](http://store.karatz.jp/cdn/shop/files/P1150273.jpg?v=1768479106&width=4000)
[On Sale at 10 PM on January 17th] Australian Black Opal 0.758ct Loose
Sale price¥18,800
![[On Sale at 10 PM on January 21st] Tanzanite from Tanzania 0.730ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P1159967_520088ea-e309-45fd-9700-80e7c203627f.jpg?v=1768827136&width=2948)
![[On Sale at 10 PM on January 20th] Sri Lankan Bicolor Sapphire 0.607ct Loose](http://store.karatz.jp/cdn/shop/files/P1149673.jpg?v=1768773538&width=4000)
![[On Sale at 10 PM on January 20th] 0.257ct Unheated Silky Pink Sapphire from Vietnam](http://store.karatz.jp/cdn/shop/files/P1149629.jpg?v=1768773538&width=4000)
![[On Sale at 10 PM on January 28th] Madagascar Grandidierite 0.228ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P1010888_da7d4774-be38-4591-a473-cf3d1fd1f4c3.jpg?v=1769480881&width=3284)
![[On Sale at 10 PM on January 21st] Rainbow Garnet (Andradite Garnet) 6.7mm/1.488ct Loose Stone from Tenkawa Village, Nara Prefecture](http://store.karatz.jp/cdn/shop/files/PC042544_6ede3236-d3e4-44d5-a190-93898fe1bd84.jpg?v=1765631000&width=4000)
South African gray diamond (makeable) 0.169ct rough stone
Sale price¥14,800
South African yellow diamond (makeable) 0.202ct rough stone
Sale price¥15,800
American benitoite 0.069ct loose
Sale price¥19,800
Tibetan bicolor andesine 1.818ct loose
Sale price¥18,800
Pakistani oil-in quartz 0.535ct loose
Sale price¥14,800
American benitoite 0.076ct loose
Sale price¥19,800
American benitoite 0.074ct loose
Sale price¥18,800
American benitoite 0.076ct loose
Sale price¥19,800
![[On Sale at 10 PM on January 25th] Canadian Rough Diamond (Sawable) 0.103ct Rough Stone](http://store.karatz.jp/cdn/shop/files/P1190498.jpg?v=1769241204&width=4000)
![[On Sale at 10 PM on January 25th] Brazilian Imperial Topaz 0.901ct Loose Stone with Certificate of Authenticity](http://store.karatz.jp/cdn/shop/files/P1200846.jpg?v=1769145712&width=4000)
![[On Sale at 10 PM on January 25th] Brazilian Imperial Topaz 0.939ct Loose Stone with Certificate of Authenticity](http://store.karatz.jp/cdn/shop/files/P1200794.jpg?v=1769241421&width=4000)
![[On Sale at 10 PM on January 25th] Russian Demantoid Garnet (Horsetail Certified) 2.6mm/0.096ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P1201320_98a47827-e65b-4fe0-80e4-0a12c06f351f.jpg?v=1769241047&width=3112)
![[On Sale at 10 PM on January 25th] Mexican Fire Opal 0.191ct Loose (Faceted)](http://store.karatz.jp/cdn/shop/files/P1201367.jpg?v=1769240879&width=4000)
![[On Sale at 10 PM on January 27th] Pakistani Ludwigite Peridot 0.915ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P1212088_2b7204f1-c23d-45df-b520-7c048ce45850.jpg?v=1769301764&width=3080)
![[On Sale at 10 PM on January 27th] Tanzanian Canary Yellow Chrysoberyl 0.139ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P1212152.jpg?v=1769301763&width=4000)
![[On Sale at 10 PM on January 29th] Tanzanian Mandarin Garnet 0.352ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P1212162_7601c2c2-4a96-4228-b4dc-c0274170dc31.jpg?v=1769515445&width=2658)
![[On Sale at 10 PM on January 27th] American Peridot 0.969ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P1212192_4f1037ff-83e4-4e50-bbf5-5ce8f8f67a59.jpg?v=1769429062&width=3083)
[On Sale at 10 PM on January 27th] American Peridot 0.969ct Loose Stone
Sale price¥25,800
![[On Sale at 10 PM on January 27th] American Peridot 0.496ct Pair of Two Loose Stones](http://store.karatz.jp/cdn/shop/files/P1212236.jpg?v=1769151430&width=4000)
![[On Sale at 10 PM on January 27th] Mexican Fire Opal 0.235ct Loose (Faceted)](http://store.karatz.jp/cdn/shop/files/P1211603.jpg?v=1769147090&width=4000)
![[On Sale at 10 PM on January 29th] Mexican Water Opal 4.8mm/0.289ct Loose](http://store.karatz.jp/cdn/shop/files/P1211645.jpg?v=1769147549&width=4000)
![[On sale at 10pm on January 25th] Blue Sapphire 5.0mm/0.552ct Loose](http://store.karatz.jp/cdn/shop/files/P1211725.jpg?v=1769149131&width=4000)
[On sale at 10pm on January 25th] Blue Sapphire 5.0mm/0.552ct Loose
Sale price¥18,800
![[On Sale at 10 PM on January 25th] Tanzanian Mandarin Garnet 0.315ct Loose](http://store.karatz.jp/cdn/shop/files/P1212302.jpg?v=1769240843&width=4000)
![[On sale at 10pm on January 23rd] Afghanistan Kunzite 0.971ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P1011851.jpg?v=1768998940&width=4000)
Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.
So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.
KARATZ's Initiatives and Social Contributions
We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.
KARATZ Books
These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.
jeweler's tools
For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.