![[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)
Tinker Bell Quartz (Pink Fire Quartz) 1.664ct Loose (Faceted Cut)
Sale price¥12,800
Dendritic quartz 7.997ct loose
Sale price¥6,980
![[Sales start November 2nd at 10 PM] [Limited to 8 stones] Colombian Mango Quartz (up to 60 carats, average 21.6 carats) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/PA300162_a9e8f9be-8438-4ac9-b9c4-ab6cf29f7bbd.jpg?v=1762053108&width=4000)
[11/2 22:00] Brazilian Dumortierite in Quartz 2.074ct Loose Stone
Sale price¥25,800
[11/7 22:00] Brazilian Dumortierite in Quartz 1.909ct Loose Stone
Sale price¥9,800
Tinker Bell Quartz (Pink Fire Quartz) 8.5mm/1.715ct Loose
Sale price¥25,800
Rutilated Quartz (Rutilated Quartz) 6.402ct Loose
Sale price¥3,980
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
Rose quartz 18.410ct loose (pineapple cut)
Sale price¥5,980
Green quartz 10.330ct loose (pineapple cut)
Sale price¥4,980
Hollandite in quartz 7.300ct loose
Sale price¥22,800
![[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)
![[Available at 10 PM on August 11th] Limited to 10 stones: Pakistani Oil-in-Quartz (Moving Bubbles) - Single Loose Stone (Multiple Purchase Discounts Available)](http://store.karatz.jp/cdn/shop/files/collage_fbd2cd6c-14c7-44a3-a8fc-8a78ec33fd37.png?v=1754828598&width=2000)
![[Available at 10 PM on September 7th] [Limited to 10 stones] Koshu Precious Stone Kiriko "Broom" plusthree 45ct Dendritic Quartz Gacha (Includes 1 Copper Rutile in Quartz) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_fe736b42-aa9a-43cd-a50b-5c83289024ea.png?v=1757203501&width=2000)
![[4 stones 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)
![[On sale at 10 PM on September 29th] [Limited to 14 stones] Brazilian Dendritic Quartz Loose Stone (Average 7 carats) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010182_dba92f7a-563c-4cb3-8248-3f75fd0cdc47.jpg?v=1759117806&width=4000)
![[Available at 10 PM on August 2nd] [Limited to 5 stones] Brazilian Rhodonite in Quartz (Faceted Cut) - 1 stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010036_ee59870c-747b-4c6f-8edb-fbfff46f61ae.jpg?v=1754194744&width=4000)
[Posted 12547829] Brazilian Dumortierite in Quartz 0.975ct loose
Sale price¥9,800
Brazilian Medusa Quartz (Paraiba Quartz) 1.181ct loose
Sale price¥3,980
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.