![[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/2026-10-1717.21.50_b5bd12df-a26a-4558-b937-050e8f74386f.png?v=1792225381&width=1256)
![[Available 9/22 at 22:00] 《7 Stones Only》 Moss Green Beryl Gacha (Oval Cut) Avg. 1.16ct 《Multi-buy Discount Available》](http://store.karatz.jp/cdn/shop/files/collage_28d6bd84-5d8c-4dd5-a10a-941c9b7f88ba.png?v=1791725690&width=2000)
![[9/22 8:00 PM Sale] Fluorite Gacha: Win a Koshu Kiseki Kiriko (Limited to 16 stones) [Multi-purchase discount available]](http://store.karatz.jp/cdn/shop/files/120_1.png?v=1791601105&width=1890)
![[Available 9/22, 10 PM] 《11 Stones Limited》 Tourmaline Gacha (includes Brazilian Paraiba Tourmaline) 《Multi-purchase discount available》](http://store.karatz.jp/cdn/shop/files/collage_5f4197b2-6b60-4862-94c5-29f0dfdd2d10.png?v=1791504471&width=2000)
![[On Sale 10/10 at 22:00] 《Limited to 15 stones》 Jaipur-cut Carved Gem Gacha 《Multi-purchase discount available》](http://store.karatz.jp/cdn/shop/files/122.png?v=1791168528&width=1890)
![[Available 10/3 at 10:00 PM] <limited to stones> Chic-colored FANCY color diamond gacha, sourced in Hong Kong, 1 loose stone (avg. 0.35ct) <multi-purchase discount available></multi-purchase></limited>](http://store.karatz.jp/cdn/shop/files/collage_3e17ed11-0933-4397-ab56-b8095908190a.png?v=1790933063&width=2000)
![[Oct 3, 10:00 PM Release] 《21 Stones Only》 Chic-colored FANCY color diamond gacha, 1 loose stone (0.16ct average), sourced in Hong Kong 《Multi-purchase discounts available》](http://store.karatz.jp/cdn/shop/files/collage_a6b77cfc-715f-4208-8ba2-42d6d800956d.png?v=1790931568&width=2000)
![[Available 10/3 at 10 PM] <limited to stones> Mexican Cantera Opal Gacha - 1 Loose Stone (Avg. 2.5ct) <multi-purchase discounts available></multi-purchase></limited>](http://store.karatz.jp/cdn/shop/files/P9250397.jpg?v=1790400242&width=4000)
![[10/2 10 PM Sale] <<limited to stones>> Brazilian Bicolor Amethyst Gacha - 1 loose stone (approx. 9x7mm) <<multi-purchase discount available>></multi-purchase></limited>](http://store.karatz.jp/cdn/shop/files/collage_5e97712b-2ccb-4420-9be9-481ee853d563.png?v=1790771941&width=2000)
![[Available 10/2 at 10 PM] 《Limited to 16 stones》 Indian Andesine-Labradorite Gacha Loose Stone, Ojiki-cut (Avg. 1.3ct) 《Multi-purchase discounts available》](http://store.karatz.jp/cdn/shop/files/collage_6ac73e79-de81-46d0-ac91-9059bbe6a442.png?v=1790771658&width=2000)
![[Available 9/26 at 10 PM] <limited quantity> Hong Kong Sourcing Gacha (7 types including Tanzanite, Hauyne, Color-Change Sapphire, Bekily Blue Garnet, etc.) 1 stone (plus 1 Rainbow Obsidian) <multiple purchase discount available></multiple></limited>](http://store.karatz.jp/cdn/shop/files/collage_8875e4dc-dcd3-45fc-bdba-6f34bda41eed.png?v=1790391882&width=2000)
![[9/20 10 PM Sale] <limited to stones> Brazilian Moss Green Beryl Gacha (0.8ct average, Rose cut) <multi-buy discounts available></multi-buy></limited>](http://store.karatz.jp/cdn/shop/files/collage_eeda1e6d-127b-4359-a416-6d73380a4c5b.png?v=1789863065&width=2000)
![[Available 9/20 at 10 PM] Limited to 7 pieces: Brazilian Batalha Paraiba Tourmaline & Elbaite rough stone gacha, featuring bicolor Paraiba (CuO: 2.7%, MnO: 2.0%) usually priced at 25,800 yen (multi-purchase discounts available).](http://store.karatz.jp/cdn/shop/files/108.png?v=1789273320&width=1512)
![[Available 9/12 at 10 PM] <limited to stones> Russian & Brazilian Alexandrite Gacha (includes 1 Chrysoberyl stone from Mr. Saint-Germain) <multi-purchase discounts available></multi-purchase></limited>](http://store.karatz.jp/cdn/shop/files/collage_0444602b-c22b-43be-b113-85703b4bbf14.png?v=1789084768&width=2000)
![[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"](http://store.karatz.jp/cdn/shop/files/collage_3d96f963-1f94-4b66-8bf1-1414be53a8fe.png?v=1788571431&width=2000)
![[6/ 10 PM JST Release] 《Limited to 11 Stones》Bicolor Gemstone Gacha featuring Paraiba Tourmaline and Euclase 《Bulk Purchase Discount Available》](http://store.karatz.jp/cdn/shop/files/collage_7b7dc323-95d7-4adf-b87d-7f158eb4b182.png?v=1787295459&width=2000)
![[Available 8/23 at 10 PM] 《13 Sets Only》 Diamond Gacha featuring a set of 2 raw and cut diamonds, including a 0.2ct VS grade diamond 《Multi-purchase discounts available》](http://store.karatz.jp/cdn/shop/files/2026-08-2115.28.22.png?v=1787293728&width=1285)
![[On sale July 20th at 10 PM] "Limited to 13 Stones" Diamond Gacha: Win a FANCY VIVID Yellow Diamond (with sorting report) worth 22,800 yen. One loose stone. (Multiple purchase discount available.)](http://store.karatz.jp/cdn/shop/files/collage_e8634dba-e7a3-4862-b6b3-003b0b13375c.png?v=1786839952&width=2000)
![[Sales start 8/13 10 PM] Limited to 12 Stones! Beryl Gacha where you can win a 12mm camellia-cut Limonite in Beryl or Santa Maria Aquamarine with a certificate of authenticity for 45,800 yen. (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/collage_42474086-f487-4265-a1d0-33fa7887cdea.png?v=1786090469&width=2000)
![[On sale August 12th at 10 PM] "Limited to 15 Stones" Diamond Gacha featuring rare butterfly-cut diamonds "Multiple Purchase Discount Available"](http://store.karatz.jp/cdn/shop/files/2026-08-0717.06.55.png?v=1786090036&width=1279)
![[Sale starts July 7 at 10 PM] Limited to 14 Stones: Special Cut Gacha [Bulk Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/75.png?v=1785113154&width=2268)
![[Limited to 24 stones] Oregon Sunstone from America with beautiful Schiller (Oval cut, 5 x 7mm) [Multiple purchase discount available]](http://store.karatz.jp/cdn/shop/files/collage_50cccb1a-7282-4487-ae6d-b6447e9885ee.png?v=1785119892&width=3000)
![[Limited to 15 Gems] Forest Green with certificate, normally ¥29,800, Canary Yellow or Ice Blue treated diamond gacha, normally ¥22,800. [Multi-purchase discount available]](http://store.karatz.jp/cdn/shop/files/57.png?v=1783491547&width=1890)
![[Available at 10 PM on February 2nd] Limited to 10 stones! Takeshi Yamamoto Cut Gemstone Gacha! Fire Flower Cut Rock Crystal and More! Discounts Available for Multiple Purchases!](http://store.karatz.jp/cdn/shop/files/2_6095cbcb-0dd3-4ab7-94b4-b22228432a93.png?v=1772620329&width=2000)
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.