![[Available at 10 PM on September 21st] [Limited to 7 Diamonds] Pink Diamond Loose Gacha! 💎 Fancy Orangey Pink 0.188ct, etc., all Fancy Colors (All Diamonds Sorted or Certified) [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/collage_77e19baa-d474-4551-a796-86a20bfbd0ba.png?v=1758275456&width=2250)
![[September 13th, 10 PM Sale] Limited to 12 stones: Chinese Xinsha/Cinnabar Loose Stone (Certificate of Authenticity for Each Stone, Average 1.10ct) Single Loose Stone (Multiple Purchase Discounts Available)](http://store.karatz.jp/cdn/shop/files/20250906_P1010190.jpg?v=1757638961&width=4000)
[Published in 12539647] Unheated blue sapphire 1.685ct loose
Sale price¥12,800
YAG (yttrium aluminum garnet) 1.792ct loose
Sale price¥12,800
YAG (Yttrium Aluminum Garnet) 6.5mm/1.548ct loose stone
Sale price¥12,800
Bicolor sapphire 0.292ct loose
Sale price¥22,800
Bicolor pink star sapphire from Mogok 0.360ct loose
Sale price¥24,800
[12549429] Blue sapphire 0.862ct loose stone
Sale price¥25,800
[12554117] Brazilian Alexandrite 0.058ct loose stone
Sale price¥14,800
[12558328] Indian Moonstone 2.415ct Loose
Sale price¥15,800
[12558292] Tibetan Andesine 0.967ct Loose Stone
Sale price¥15,800
[12558126] Brazilian Fluorite Quartz 3.962ct Loose Stone
Sale price¥24,800
[12558107] Brazilian Bicolor Beryl 0.556ct Loose Stone
Sale price¥29,800
Paraiba tourmaline from Brazil 0.167ct loose (CuO:1.6%, MnO:3.0%)
Sale price¥29,800
Paraiba tourmaline from Brazil 0.086ct loose (CuO:1.5%, MnO:2.3%)
Sale price¥18,800
Paraiba tourmaline from Brazil 0.204ct loose
Sale price¥29,800
Red beryl 0.173ct loose
Sale price¥29,800
Bicolor spinel 0.737ct loose
Sale price¥25,800
Mexican Opal 8mm/1.430ct Loose
Sale price¥25,800
Pink sapphire 0.934ct loose
Sale price¥15,800
Mexican Fire Opal 1.580ct Loose
Sale price¥25,800
Orthoclase 3.711ct loose stone, Japan-Germany exchange
Sale price¥15,800
Mexican fire agate 5.519ct loose
Sale price¥12,800
Paraiba tourmaline from Brazil 0.134ct loose (CuO:0.8%, MnO:2.3%)
Sale price¥25,800
Mexican fire agate 3.613ct loose
Sale price¥15,800
Cantera opal 17.284ct loose
Sale price¥29,800
Sealight 2.666ct loose
Sale price¥18,800
Red beryl 0.181ct loose
Sale price¥29,800
Conch pearl 0.390ct loose (pink white color)
Sale price¥18,800
Zircon 2.219ct loose (with crystals) Japanese-German edition
Sale price¥19,800
Rutilated Quartz (Rutilated Quartz) 82.385ct Loose Stone, Japan-Germany
Sale price¥29,800
Sealight (Shealight) 1.940ct loose
Sale price¥15,800
![[Koshu precious stone Kiriko plusthree] Light citrine 2.490ct loose with patch](http://store.karatz.jp/cdn/shop/products/PA047853.jpg?v=1749164731&width=4000)
![[Sold at 10 PM on September 7th] Pt900 Brazilian Swiss Blue Topaz 0.41ct Cat Cut Earrings](http://store.karatz.jp/cdn/shop/files/collage_b0e69240-6053-4a80-91cb-b76080613627.png?v=1757161767&width=2000)
[Published on 12560222] Shinsha (Cinnabar) 0.549ct Loose Stone
Sale price¥19,800
[Published on 12560220] Shinsha (Cinnabar) 0.486ct Loose Stone
Sale price¥16,800
[On sale at 10pm on September 18th] 1.476ct loose sphalerite from Spain
Sale price¥29,800
[On Sale at 10 PM on September 19th] Colombian Emerald 0.101ct Loose
Sale price¥15,800
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.