[Item No. 12564322] Burmese Red Spinel 0.176ct Loose Gemstone
Sale price¥17,800
[Item 12564569] Russian Non-Oiled Emerald 0.121ct Loose Gemstone
Sale price¥49,800
[Item 12564624] Tanzanian Cobalt Spinel 0.094ct Loose Gemstone
Sale price¥47,800
[12560799 Listed] Brazilian Elestial Amethyst 0.819ct Loose Stone
Sale price¥9,800
[Item No. 12560796] Brazilian Elestial Amethyst 1.965ct Loose Stone
Sale price¥18,800
[12560786] Nigerian Green Beryl 0.621ct Loose Stone
Sale price¥8,800
Brazilian Mint-Colored Tourmaline 0.294ct Loose Stone
Sale price¥15,800
Zambian Emerald 0.188ct Loose Stone
Sale price¥9,800
Mozambique Almandine Garnet 1.144ct Loose Stone
Sale price¥15,800
Australian Black Opal 0.421ct Loose Stone
Sale price¥18,800
![[10/3 (Sat) 10:00 AM Deadline: Lottery Sale ①_02] Diamond (H&C) 4.3mm/0.318ct Loose Stone (H, SI-1, 3Excellent H&C) with CGL Certificate & Sarine Light Report](http://store.karatz.jp/cdn/shop/files/collage_7de5fb5b-0545-4b3f-ad81-43e23de482f7.png?v=1790579155&width=2000)
![[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)
![[On sale 10/30 at 22:00] 《Limited to 3 stones》 Oxblood red coral from Kochi Prefecture, half-drilled (8.7mm, top-color equivalent) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/PA061324_4217c560-3782-4f8c-9aa1-e3fa5a2264e0.jpg?v=1791680300&width=4000)
![[Available 10/30 at 10:00 PM] 《Limited to 8 stones》 Kochi Prefecture Red Coral Round Beads (8.5–9.0 mm) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/PA061362_522f9b23-dc30-4ff8-a6a7-2bd5dfde90de.jpg?v=1791679769&width=4000)
![[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)
![[On sale 10/31 at 10 PM] 《Limited to 5 stones》 1 Sri Lankan Uva Moonstone Loose Stone (New Lumina Star Cut, by Mr. Sanje, avg. 0.5ct) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/collage_055269e3-e881-48d7-8e6b-be69a2c72be1.png?v=1791681460&width=2000)
![[Available 11/1 at 10 PM] 《Limited 9 pieces》 Indian Iolite Sunstone loose stone (avg. 0.70ct, pear-shaped cut) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/collage_f453805f-efe0-4cb6-9064-b8b6860ac31c.png?v=1791682551&width=2000)
![[On sale 10/30 at 22:00] 《Limited to 9 stones》 1 Iolite Sunstone loose stone from India (average 0.70ct) 《Multiple purchase discount available》](http://store.karatz.jp/cdn/shop/files/collage_2b006162-3b5c-439b-b582-bdff30c42e76.png?v=1791682080&width=2000)
![[Available 11/1 at 10 PM] 《8 stones limited》 Indian Iolite Sunstone loose stone (avg. 0.4ct, oval cut) 《Multiple purchase discount available》](http://store.karatz.jp/cdn/shop/files/collage_0f297579-3922-4085-bec1-07cdc555493a.png?v=1791683111&width=2000)
![[Available 11/1 at 10 PM] <limited to stones> Indian Iolite Sunstone loose stone (avg. 0.32ct) <multi-buy discount available></multi-buy></limited>](http://store.karatz.jp/cdn/shop/files/collage_0b1503d0-c0a4-4c7d-8be7-a99800d445ec.png?v=1791683502&width=2000)
![[Available 11/1 at 10 PM] 《7 stones limited》 Synthetic Cobalt Spinel (by Mr. Saint-Ger, 3mm hexagonal cut) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/2026-10-1111.00.09.png?v=1791684034&width=1246)
[Posted on 22602707] [Colorful] Pt900 Rubellite 1.308ct Ring
Sale price¥158,000
![[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)
[Item 12564248] Madagascar Sapphire 0.385ct Loose Stone
Sale price¥18,800
[Available 10/10 at 10 PM] Hemimorphite from Congo, 3.363ct loose stone
Sale price¥18,800
[Available 10/10 at 10 PM] Brazilian Yellow Beryl 0.952ct Loose Gemstone
Sale price¥14,800
[Available Oct 10, 10:00 PM] Madagascar Apatite 0.300ct Loose Stone
Sale price¥8,800
[10/10 10:00 PM Release] Turkish Diopside 0.450ct Loose Stone
Sale price¥9,800
[Available Oct 12, 10 PM] Indian Iolite Sunstone 1.113ct Loose Gemstone
Sale price¥11,800
[On sale Oct 15, 10 PM] Sri Lankan Moonstone 0.922ct Loose Gemstone
Sale price¥12,800
[On sale 10/12 at 22:00] Sri Lankan Uva Moonstone 0.740ct Loose Stone
Sale price¥14,800
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.