![[Available at 10 PM on December 6th] Limited Quantity! Guess what you'll receive! Gacha Set of 2 Rough and Loose Stones (Rare Stones Included) [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/collage01_63a36d88-4b0c-4580-a52a-34d0de302821.png?v=1764984693&width=2250)
![[On sale until 10 PM] Limited to 10 stones: Yamamoto Cut Gacha, featuring carnelian, lemon quartz, rock crystal, and more. Discounts available for multiple purchases.](http://store.karatz.jp/cdn/shop/files/1_955659c7-bb8f-4263-af29-7d0064fd22c4.png?v=1765352106&width=4000)
![[On sale 12/6 at 10 PM] {Limited to 13 stones} Loose Spinel Gacha Stones, Including Sakura In-Cut and Dandelion Cut {Multiple purchase discounts available}](http://store.karatz.jp/cdn/shop/files/collage_55b17613-2e3d-4703-b90b-eba1d26ac012.png?v=1765006848&width=2250)
![[Available at 10 PM on December 20th] Limited to 11 Stones: Montana Sapphire (Rock Creek Mine) Gacha! 1 Loose Stone (Oval Cut, 5x3mm) [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/PC160083.jpg?v=1766185425&width=4000)
![[Sale at 10 PM on December 20th] [Limited to 6 stones] Brazilian Pyrite in Quartz Loose Stone (Average 3.2 carats) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_b9e9b6ce-b87d-411c-a44c-3a67ddfaa555.png?v=1766359287&width=2250)
![[Available at 10 PM on December 20th] Limited Edition of 7 Montana Sapphires (Rock Creek Mine) Gacha (Pear Shape, Approx. 5 x 3mm) [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/PC160141.jpg?v=1766185869&width=4000)
Australian boulder opal 3.695ct loose
Sale price¥14,800
Dioptase from Namibia 3.3mm/0.162ct loose Japanese-German edition
Sale price¥79,800
Australian boulder opal 2.470ct loose
Sale price¥7,980
Sri Lankan star sapphire 2.094ct loose
Sale price¥12,800
Pink tourmaline 0.516ct loose
Sale price¥5,980
American red beryl 2.9mm/0.094ct loose
Sale price¥29,800
Pink spinel 0.409ct loose
Sale price¥6,980
Bicolor Andesine 6mm/0.756ct loose
Sale price¥12,800
Dioptase from Namibia 0.229ct loose Japanese-German book
Sale price¥69,800
YAG (Yttrium Aluminum Garnet) 7mm/1.775ct Loose Stone
Sale price¥9,800
Oregon Sunstone 0.976ct loose
Sale price¥18,800
Australian opal 0.286ct loose
Sale price¥5,980
[Rouge cut] Almandine garnet 2.076ct loose
Sale price¥8,800
[Rouge cut] Almandine garnet 2.090ct loose
Sale price¥8,800
![[12/9 22:00 Sale] Internally Flawless Diamond (H&C) 3.8mm/0.210ct Loose (F, IF, 3 Excellent H&C) GIA & Chuho](http://store.karatz.jp/cdn/shop/files/S__223027203.jpg?v=1761697297&width=1477)
Mexican Fire Opal 4.5mm/0.244ct Loose
Sale price¥9,800
Zircon 0.416ct loose
Sale price¥3,980
Purple spinel 0.995ct loose stone
Sale price¥15,800
Paraiba tourmaline from Mozambique 0.207ct loose
Sale price¥9,800
Dioptase from Namibia 3.1mm/0.132ct loose Japanese-German edition
Sale price¥55,800
Diamond 0.052ct loose (trapeze cut, VS class equivalent)
Sale price¥6,980
Chrysoberyl cat's eye 2.283ct loose
Sale price¥12,800
Brazilian Paraiba tourmaline 0.420ct raw stone (CuO:1.6%, MnO:1.3%)
Sale price¥69,800
Paraiba tourmaline from Mozambique 0.229ct loose
Sale price¥9,800
Colombian emerald cat's eye 0.110ct loose
Sale price¥9,800
Chrysoberyl cat's eye 2.553ct loose (bicolor)
Sale price¥39,800
Brazilian Medusa Quartz (Paraiba Quartz) 3.919ct loose
Sale price¥6,980
Australian boulder opal 4.470ct loose
Sale price¥25,800
Oregon Sunstone 1.157ct loose
Sale price¥8,800
Yellow opal 17.283ct loose
Sale price¥29,800
White topaz 16.06ct loose
Sale price¥25,800
Petalite 2.858ct loose
Sale price¥7,980
Bicolor grossular garnet 0.782ct loose
Sale price¥12,800
South African rhodochrosite 1.333ct loose Japanese-German edition
Sale price¥98,000
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.