Yellow tourmaline 0.431ct loose stone
Sale price¥3,980
Color change sapphire 0.283ct loose
Sale price¥3,980
Rutilated Quartz (Rutilated Quartz) 6.402ct Loose
Sale price¥3,980
Color change sapphire 0.401ct loose
Sale price¥3,980
Hackmanite 0.520ct loose stone
Sale price¥18,800
Kunzite 8.4mm/2.908ct loose stone
Sale price¥19,800
Lepidocrocite in quartz 1.555ct loose
Sale price¥12,800
Lepidocrocite in Quartz 1.227ct Loose Stone
Sale price¥9,800
Lepidocrocite in quartz 0.692ct loose
Sale price¥8,800
Brazilian bicolor tourmaline 3.291ct loose
Sale price¥35,800
Brazilian bicolor tourmaline 3.569ct loose
Sale price¥35,800
Bicolor Euclase from Zimbabwe 0.084ct loose
Sale price¥98,000
Bicolor Benitoite 0.194ct loose (square cut)
Sale price¥128,000
Madagascar Apatite 0.763ct Loose Stone
Sale price¥6,980
Zoisite 1.219ct loose stone
Sale price¥15,800
Bicolor tourmaline 0.669ct loose (rose cut)
Sale price¥8,800
Bicolor tourmaline 0.549ct loose (rose cut)
Sale price¥8,800
Colombian pyrite in emerald 7.836ct loose
Sale price¥398,000
Rose quartz 18.410ct loose (pineapple cut)
Sale price¥5,980
Green quartz 10.330ct loose (pineapple cut)
Sale price¥4,980
Andalusite 5mm/0.480ct loose
Sale price¥3,980
Hollandite in quartz 7.300ct loose
Sale price¥22,800
![[On sale from 10/22 at 10 PM] Limited to 14 stones: Lab-grown diamond (cabochon cut, approximately 2.3mm) - 1 loose diamond [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_69e68b54-0eb4-42e4-9bf1-bd9f3830d208.png?v=1760920748&width=2250)
![[On sale 10/22 at 10 PM] Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/PA170328.jpg?v=1760920536&width=4000)
[10/19 22:00 Sale] American Benitoite 0.165ct Loose Stone
Sale price¥59,800
![[On sale from 10/18 at 10 PM] Limited to 10 stones: Greenland Ruby (2mm, with certificate from the mine owner) - Single loose stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010072_03ace85f-7297-4784-b894-a29098f147f9.jpg?v=1760749472&width=4000)
![[On Sale 10/19 at 10 PM] [Limited to 10 stones] Spinel Gacha Loose Stone, Including 1.17ct Bicolor Spinel [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/PA170079.jpg?v=1760746140&width=4000)
![[On sale 10/19 at 10 PM] {Limited to 10 stones} Paraiba Tourmaline Gacha 💎 Paraiba Tourmaline or Paraiba Tourmaline in Quartz (1 loose stone) {Multiple purchase discounts available}](http://store.karatz.jp/cdn/shop/files/18_261a657f-9dba-46a6-9a8b-1805ad2c5b57.png?v=1760745196&width=4000)
[On Sale at 10pm on 10/22] Indian Iolite Sunstone 0.228ct Loose
Sale price¥6,980
[On Sale at 10pm on 10/22] Indian Iolite Sunstone 0.321ct Loose
Sale price¥8,800
[On Sale at 10pm on 10/22] Brazilian Amethyst 5.883ct Loose
Sale price¥9,800
![[12560935] Shinsha (Cinnabar) 0.951ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PA140320.jpg?v=1762155700&width=4000)
[12560935] Shinsha (Cinnabar) 0.951ct Loose Stone
Sale price¥18,800
[On Sale at 10pm on 10/23] Brazilian Aquamarine 0.334ct Loose Stone
Sale price¥6,980
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.