Vertical: Above 10.0mm

Mexican Cantera Opal 11.105ct Loose Sale price¥12,800

Australian Shell Opal (Shell Opal) 51.801ct Rough Stone Sale price¥25,800

Mexican Cantera Opal 4.835ct Loose Sale price¥19,800

Australian Shell Opal (Shell Opal) 73.321ct Rough Stone Sale price¥49,800

Mexican Cantera Opal 20.655ct Loose Sale price¥19,800

Mexican Cantera Opal 5.204ct Loose Sale price¥12,800

Brazilian Green Tourmaline 12.252ct Loose Stone Sale price¥398,000

Colombian pyrite in emerald 6.415ct loose stone Sale price¥298,000

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Pakistan Ruby in Quartz 1.429ct Loose Stone

coming soon

スリランカ産マターレークォーツ 7.581ctルース Sale price¥22,800

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[Item 12564477] 5.124ct Limonite-in-Blue Topaz Loose Gemstone from Brazil

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[Item 12564630] Black Sapphire 5.833ct Loose Stone

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[10/4, 10 PM Release] Brazilian Amethyst 8.984ct Loose Gemstone

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[Available 10/10 at 22:00] Brazilian Limonite-in-Topaz 3.194ct Loose Gemstone

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[Available Oct 11, 10 PM] Indian Iolite Sunstone 2.460ct Loose Gemstone

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Dendritic Apatite from Brazil 4.679ct Loose Stone

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Brazilian Dendritic Apatite 3.949ct Loose Stone

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[10/4, 10 PM Release] Brazilian Limonite-in-Blue Topaz 4.800ct Loose Stone

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[10/4, 10 PM Release] Brazilian Limonite-in-Blue Topaz 8.117ct Loose Gemstone

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ブラジル産ティンカーベルクォーツ（ピンクファイヤークォーツ） 4.602ctルース

[Available 10/5 at 10:00 PM] Brazilian Tinker Bell Quartz (Pink Fire Quartz) 4.602ct Loose Stone

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[Available 10/5 at 10 PM] Sea Blue Chalcedony 2.713ct Loose Stone

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[On sale 9/26 at 22:00] Tiger's Eye 13.155ct Loose Stone

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[Available 9/26 at 22:00] Picture Agate 9.088ct Loose Gemstone

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【Available 9/26 at 10 PM】 Picture Agate 7.292ct Loose Gemstone

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[Available 9/18 at 22:00] Brazilian Bicolor Citrine 4.027ct Loose Gemstone

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[Available 9/22, 10 PM] Malawi Moonstone 3.677ct Loose Gemstone

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Japanese style twin crystal 4.727ct raw stone

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[Available 9/5 at 10 PM] 20.766ct Brazilian Paraiba Tourmaline Rough Stone

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[9/5 10 PM Sale] Brazilian Paraiba Tourmaline 20.758ct Rough Stone

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[9/5 10 PM Sale] Brazilian Paraiba Tourmaline 8.863ct Rough Stone

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[Available 9/5 at 10:00 PM] 8.135ct Raw Brazilian Paraiba Tourmaline

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Pyrite in Emerald from Colombia, 2.905ct loose stone

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ブラジル産レインボーアクアマリン（イリデッセンスアクアマリン） 1.957ctルース

[Available 9/6 at 10 PM] Brazilian Rainbow Aquamarine (Iridescence Aquamarine) 1.957ct Loose Gemstone

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[On sale 9/1 at 22:00] Brazilian Paraiba Tourmaline in Quartz 2.737ct Loose Stone

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【Sales start August 28th, 10 PM JST】Moldavite Loose Stone from former Czechoslovakia, 2.231 ct, with certificate

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Brazilian Parti-Colored Tourmaline 6.799ct Loose Gemstone with Gem Identification Report

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Bolivian Phosphophyllite 2.587ct Loose Gemstone, GGL Certified

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[Posted on 12563864] Australian Black Opal 1.797ct Loose Stone

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[12552846] Blue topaz 3.074ct loose stone

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[Lottery Sale 0620_06] Boké Coral (Kochi Prefecture) 6.735ct Loose

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[Deadline: Thursday, May 14th, 10 am JST] Lottery Sale_0508_10 Colombian Pyrite in Emerald Loose Stone, 4.680ct

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Midway coral 38.585ct raw (branch)

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[Published as 12563212] Uncut Kochi Prefecture Blood Coral, 24.829ct

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Brazil Tourmaline Cat's Eye 13.617ct Loose Gemstone with Identification Report

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[Koshu Kiseki Kiriko pluesthree] Synthetic Moissanite 10mm/4.137ct Loose Stone

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Brazilian Dumortierite in Quartz 0.957ct Loose Stone

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Mexican egg-in-opal, 3.054 ct, loose

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1.170ct Loose Australian Rainbow Lattice Sunstone

KARATZ Custom Made

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.

KARATZ・Five Commitments

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.