![[Lottery Sale: Friday, October 31st, 10:00 AM] 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)
[12559871] Pakistani Peridot 0.649ct Loose Stone
Sale price¥9,800
![[12556633] Peridot 1.176ct loose stone](http://store.karatz.jp/cdn/shop/files/PA294755_2df0a260-f370-43cb-a9d9-7b28de9e31a6.jpg?v=1762176724&width=3268)
[12556633] Peridot 1.176ct loose stone
Sale price¥9,800
Brown diamond 0.132ct loose
Sale price¥12,800
![[On Sale November 1st at 10 PM] [Limited to 15 Stones] Rare Stone Gacha! 💎 Brazilian Paraiba Tourmaline 0.240ct, Taaffeite, Shinsha, Benitoite, and More [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/collage_ea7879a8-bd74-4c84-a6b6-8e0bf18a5631.png?v=1761893443&width=2250)
![[On Sale November 1st at 10 PM] [Limited to 11 Stones] Oregon Sunstone Gacha Loose Stone (Average 1.60ct) Including Koshu Precious Stones Cut Plus Three and Vortex Cut [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/collage_7ec015a3-593d-494a-ba24-c8947b0ccec9.png?v=1761877768&width=2250)
![[On sale November 1st at 10 PM] [Limited to 8 stones] Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/PA230107_833f3433-6ac0-4cc6-8180-14ab57aefba8.jpg?v=1761807158&width=3241)
![[On sale at 10 PM on October 10th] [Limited to 10 stones] Win one loose bicolor euclase gemstone from the bicolor gem gacha [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/2025-11-028.51.53.png?v=1762042677&width=1258)
![[On sale 10/31 at 10 PM] Garnet Gacha Loose Stone Set with Two Koshu Cut Precious Stones (Multiple Purchase Discounts Available)](http://store.karatz.jp/cdn/shop/files/2ce9f9727de9532a55237668af9f2b6d_e4813415-0cbb-4832-91b8-0cb2c6b767c8.png?v=1761375345&width=2000)
![[On sale 10/26 at 10 PM] {3 stones left} Ruby Loose Gacha: Win a 0.59ct Pigeon Blood Ruby with AIGS or a Burmese Star Ruby {Multiple purchase discounts available}](http://store.karatz.jp/cdn/shop/files/20_352b9b8a-2afa-4889-bbf4-5d56d09e3eb4.png?v=1760762243&width=4000)
Adult Sebonstar Jewelry 3rd Edition Adult Sebonstar Pendant Silver Model Mirage Edition
Sale priceFrom ¥29,800
![[12560961] Brazilian citrine 1.125ct loose stone](http://store.karatz.jp/cdn/shop/files/PA232086_c4ac78a5-7273-4b5b-b351-0e0491b37048.jpg?v=1762176724&width=3297)
[12560961] Brazilian citrine 1.125ct loose stone
Sale price¥9,800
![[Lottery Sale: Friday, October 31st, 10:00 AM] Madagascar Padparadscha Sapphire 5.6mm/0.768ct Loose Stone - Central Gem Laboratory](http://store.karatz.jp/cdn/shop/files/PA211166.jpg?v=1761698167&width=4000)
![[Lottery Sale: Friday, October 31st, 10:00 AM] 0.290ct Colombian Oil-Free Emerald Loose GIA](http://store.karatz.jp/cdn/shop/files/PA211226.jpg?v=1761368587&width=4000)
![[Lottery sale: Friday, October 31st, 10:00 AM] 1.050ct loose silky pink sapphire from Madagascar GIT](http://store.karatz.jp/cdn/shop/files/PA211246.jpg?v=1761368614&width=4000)
![[12560847] Russian Demantoid Garnet (Horsetail) 0.280ct Loose](http://store.karatz.jp/cdn/shop/files/PA230483_616a525d-4a7b-44a9-99dd-e7e97bd89efe.jpg?v=1762176725&width=3317)
[12560847] Russian Demantoid Garnet (Horsetail) 0.280ct Loose
Sale price¥49,800
![[Lottery Sale: Friday, October 31st, 10:00 AM] 0.195ct Dumortierite Loose Stone from Madagascar](http://store.karatz.jp/cdn/shop/files/PA232824.jpg?v=1761373751&width=4000)
![[12560949] Shinsha (Cinnabar) 1.166ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PA170360_2313da11-6739-41e0-9982-2f187af9855f.jpg?v=1762155700&width=2791)
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.