![[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)
![[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)
【12/30 22時販売】ブラジル産パイライトインクォーツ 4.153ctルース
Sale price¥11,000
【12/30 22時販売】ブラジル産パイライトインクォーツ 9.477ctルース
Sale price¥22,800
Brazilian kyanite in quartz 13.740ct loose
Sale price¥29,800
Brazilian kyanite in quartz 4.770ct loose
Sale price¥12,800
Brazilian Trapichea Amethyst 24.772ct loose with patch
Sale price¥6,980
Brazilian Medusa Quartz (Paraiba Quartz) 10.298ct loose
Sale price¥7,980
Brazilian Medusa Quartz (Paraiba Quartz) 5.809ct loose
Sale price¥6,980
Brazilian Medusa Quartz (Paraiba Quartz) 3.441ct loose
Sale price¥3,980
Brazilian Medusa Quartz (Paraiba Quartz) 2.757ct loose
Sale price¥3,980
Brazilian dumortierite in quartz 4.592ct loose
Sale price¥9,800
![[12/7 22:00] Brazilian Dumortierite in Quartz 16.250ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PC052301_931dfc6c-1047-4bdf-821f-203298615d94.jpg?v=1765588004&width=2810)
[12/7 22:00] Brazilian Dumortierite in Quartz 16.250ct Loose Stone
Sale price¥9,800
![[12/9 22:00] Brazilian Lavender Quartz (Scorolite) 0.994ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PC043009.jpg?v=1765631801&width=4000)
![[12/12 22:00 Sale] Synthetic Quartz 0.430ct Loose Stone (Synthetic Green Quartz)](http://store.karatz.jp/cdn/shop/files/PC032362.jpg?v=1765630883&width=4000)
![[12/12 22:00 Sale] Brazilian Dumortierite in Quartz 1.131ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PC032210.jpg?v=1765630403&width=4000)
[12/12 22:00 Sale] Brazilian Dumortierite in Quartz 1.131ct Loose Stone
Sale price¥12,800
![[12/17 22:00] Brazilian Dumortierite in Quartz 2.012ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PC093183.jpg?v=1765758494&width=4000)
[12/17 22:00] Brazilian Dumortierite in Quartz 2.012ct Loose Stone
Sale price¥14,800
Brazilian Medusa Quartz (Paraiba Quartz) 3.919ct loose
Sale price¥6,980
![[12/16 22:00] Brazilian Dumortierite in Quartz 10.0mm/5.357ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PC052077.jpg?v=1765757287&width=4000)
![[12/16 22:00] Brazilian Rose Quartz 4.019ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PC053205_f1aaf7a0-87fb-4e1d-a7d0-a6b211d1cdaf.jpg?v=1765501592&width=4000)
[12/16 22:00] Brazilian Rose Quartz 4.019ct Loose Stone
Sale price¥11,000
![[12/16 22:00] Brazilian Rose Quartz 1.848ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PC053183_c77f5c66-523a-4bc8-91b8-7ec5090427d6.jpg?v=1765757287&width=4000)
[12/16 22:00] Brazilian Rose Quartz 1.848ct Loose Stone
Sale price¥9,800
![[12/13 22:00] Brazilian Rose Quartz 2.167ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PC042830.jpg?v=1765585045&width=4000)
[12/13 22:00] Brazilian Rose Quartz 2.167ct Loose Stone
Sale price¥9,800
![[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery](http://store.karatz.jp/cdn/shop/files/collage_c90ad5e1-b47a-49f9-b7d7-d75e04cd883a.png?v=1724920180&width=2000)
![[Jeweler's Tools] Digital Caliper Color Shift Amethyst 2 Piece Set](http://store.karatz.jp/cdn/shop/files/PB074623.jpg?v=1699331046&width=4000)
[Jeweler's Tools] Digital Caliper Color Shift Amethyst 2 Piece Set
Sale price¥2,980
"PSYCHO-PASS" x KARATZ collaboration jewelry: Shogo Makishima razor design ring (amethyst)
Sale priceFrom ¥25,800
![[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)
![Only one left! Brazilian dendritic quartz kitten cut loose stone (for beginners) (5mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_bee5ee11-c26d-47e0-9e94-2c270bbdf768.png?v=1760169992&width=2250)
![Limited to 9 stones [Mr. Sanjay] Oil in quartz, spinel, yellow opal 1 loose stone (damaged) [Multiple purchase discount available]](http://store.karatz.jp/cdn/shop/files/P2220131_50010af8-99af-424d-9d1b-6ade6dc62a7a.jpg?v=1708595324&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.