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Sold out 《Limited to 15 Stones》Cordierite-Inclusive Cordierite Spinel Gacha, Equivalent to 59,800 Yen 《Bulk Purchase Discount Available》

《Limited to 15 Stones》Cordierite-Inclusive Cordierite Spinel Gacha, Equivalent to 59,800 Yen 《Bulk Purchase Discount Available》
Sold out 《Limited to 15 Stones》Fluorite Gacha including 2 Koshu-Kiseki-Kiriko stones (normally 49,800 yen) with 1 CC fluorite stone as a bonus《Multiple Purchase Discount Available》

《Limited to 15 Stones》Fluorite Gacha including 2 Koshu-Kiseki-Kiriko stones (normally 49,800 yen) with 1 CC fluorite stone as a bonus《Multiple Purchase Discount Available》
Sold out 《Limited to 4 stones》Kochi Prefecture Blood Red Coral Branch (Raw Wood) 1 stone (March birthstone, coral, average 7.2ct) 《Multiple purchase discount available》

《Limited to 4 stones》Kochi Prefecture Blood Red Coral Branch (Raw Wood) 1 stone (March birthstone, coral, average 7.2ct) 《Multiple purchase discount available》
Sold out 《Limited to 12 Stones》Kochi Prefecture Blood Coral Branch (Raw Coral) 1 Stone (March Birthstone, Coral, average 5.3ct)《Bulk Purchase Discount Available》

《Limited to 12 Stones》Kochi Prefecture Blood Coral Branch (Raw Coral) 1 Stone (March Birthstone, Coral, average 5.3ct)《Bulk Purchase Discount Available》

Sold out Limited to 18 items: Deep-sea Coral Branch (raw wood), 1 stone (March birthstone, coral, average 18ct) (bulk purchase discount available)

Limited to 18 items: Deep-sea Coral Branch (raw wood), 1 stone (March birthstone, coral, average 18ct) (bulk purchase discount available)

Sold out Kochi Prefecture Blood Red Coral Loose (6-8mm / damaged by water pressure during retrieval) "Multiple purchase discount available"

Kochi Prefecture Blood Red Coral Loose (6-8mm / damaged by water pressure during retrieval) "Multiple purchase discount available"

Sold out 【12562637掲載】マラウイ産ムーンストーン（マラウイムーンストーン） 2.808ctルース

2.808ct Malawi Moonstone Loose
Sold out 【12562641掲載】マラウイ産ムーンストーン（マラウイムーンストーン） 4.198ctルース

Malawi Moonstone 4.198ct Loose Stone
Sold out スリランカ産バイカラーサファイア 0.302ctルース

[On sale May 10th at 10 PM] Sri Lankan Bi-Color Sapphire 0.302ct Loose Stone
Sold out Unheated Pigeon Blood Ruby 0.260ct Loose Stone AIGS

Unheated Pigeon Blood Ruby 0.260ct Loose Stone AIGS
Sold out 《Limited to 3 stones》Yunnan Cinnabar 1-Stone Loose Gemstone (Avg. 1.55ct, All stones with certificate)《Multiple purchase discount available》

《Limited to 3 stones》Yunnan Cinnabar 1-Stone Loose Gemstone (Avg. 1.55ct, All stones with certificate)《Multiple purchase discount available》

Sold out 【ゆきんこカット】合成サファイア 2.220ctルース（合成ブルーサファイア）

[Yukinko Cut] Synthetic Sapphire 2.220ct Loose (Synthetic Blue Sapphire)
Sold out カナダ産ダイヤモンド原石（ソーヤブル） 0.328ct原石（トライゴン有り）

Canadian raw diamond (sawable) 0.328ct raw (with trigons)
Sold out マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.089ctルース

Bekily Blue Garnet from Madagascar (color change garnet) 0.089ct loose
Sold out マダガスカル産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 0.463ctルース

0.463 ct Loose Madagascar Andesine-Labradorite (Common Name: Rainbow Moonstone)
Sold out Pt950 アイスブルーダイヤモンド リング

Pt950 Ice Blue Diamond Ring
Sold out 【さくらインカット】モンゴル産アンデシン 8.0mm/1.652ctルース

[Sakura Cut] Mongolian Andesine 8.0mm/1.652ct Loose Stone

Sold out 【Sakura Shape】Oregon Sunstone 1.174ct Loose

【Sakura Shape】Oregon Sunstone 1.174ct Loose
Sold out [Sakura Shape] Synthetic Sapphire 3.285ct Loose Stone

[Sakura Shape] Synthetic Sapphire 3.285ct Loose Stone
Sold out 【12562646掲載】ペルー産バイカラーブルーオパール 2.707ctルース

Peruvian Bi-Color Blue Opal 2.707ct Loose Stone

Sold out 【12562647掲載】ペルー産バイカラーブルーオパール 3.757ctルース

Peruvian Bicolor Blue Opal 3.757ct Loose Stone

Sold out ペルー産バイカラーブルーオパール 4.067ctルース

[On sale May 3rd, 10 PM JST] Peruvian Bi-Color Blue Opal 4.067ct Loose Stone
Sold out 【12562650掲載】ペルー産バイカラーブルーオパール 4.862ctルース

Peruvian Bicolor Blue Opal 4.862ct Loose
Sold out 【Sales start 10:00 p.m. on May 4th (JST)】Grandidierite from Madagascar, 0.112 ct loose stone

【Sales start 10:00 p.m. on May 4th (JST)】Grandidierite from Madagascar, 0.112 ct loose stone
Sold out 0.163 ct loose grandidierite from Madagascar

0.163 ct loose grandidierite from Madagascar
Sold out Brazilian Alexandrite Cat's Eye 0.097ct Loose Stone

Brazilian Alexandrite Cat's Eye 0.097ct Loose Stone
Sold out Brazilian Alexandrite Cat's Eye 2.6mm/0.111ct Loose Stone

Brazilian Alexandrite Cat's Eye 2.6mm/0.111ct Loose Stone
Sold out 【Sales start: May 4, 10 PM (JST)】 Zimbabwe Eudialyte 0.083ct Loose Gemstone

【Sales start: May 4, 10 PM (JST)】 Zimbabwe Eudialyte 0.083ct Loose Gemstone
Sold out [On sale May 4th at 10 PM JST] Zimbabwe Euclase 0.102ct Loose

[On sale May 4th at 10 PM JST] Zimbabwe Euclase 0.102ct Loose
Sold out ジンバブエ産ユークレース 0.120ctルース

【Available from 10 PM on May 10th】Euclase from Zimbabwe 0.120ct Loose Stone
Sold out ジンバブエ産バイカラーユークレース 0.102ctルース

[On sale May 5th at 10 PM] Zimbabwean Bicolor Euclase 2.9mm/0.102ct Loose Stone
Sold out ジンバブエ産バイカラーユークレース 0.132ctルース

[On sale May 5th at 10 PM] Zimbabwean bicolor euclase 0.132ct loose stone
Sold out 【12562696掲載】パラサイティックペリドット 0.220ctルース

Parasitic Peridot 0.220ct Loose Stone with Certificate

Sold out 【12562697掲載】トルマリン 5.620ctルース

[Dandelion Cut] Brazilian Tourmaline 11mm/5.620ct Loose Stone with Certification by Shimizu Kisetsu [Limited to 1 Piece] ¥59,800 Item No. 12562697

Sold out コロンビア産ユークレース 5.223ctルース

Euclase from Colombia 5.223ct Ruth Japanese German edition

Sold out 【12562701掲載】ブラジル産バイカラートルマリン 4.554ctルース

Brazilian Bicolor Tourmaline 4.554ct Loose Stone with Certification

Sold out 【12562706掲載】アメリカ産オレンジベニトアイト 0.135ctルース

0.135 ct. loose American Benitoite (Peach Benitoite), with certificate

Sold out Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)

Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)

Sold out Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)

Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)
Sold out [Sakura Cut] Mongolian Andesine 8.0mm/1.652ct Necklace

[Sakura Cut] Mongolian Andesine 8.0mm/1.652ct Necklace

Sold out 《New Tucson Arrivals・Limited to 13 Stones》Pakistani Lazurite (Azure Stone) Loose Stone《Multiple Purchase Discount Available》

《New Tucson Arrivals・Limited to 13 Stones》Pakistani Lazurite (Azure Stone) Loose Stone《Multiple Purchase Discount Available》
Sold out 0.133ct Loose Blue Sapphire from Madagascar

0.133ct Loose Blue Sapphire from Madagascar
Sold out Tanzanian Rhodolite Garnet 0.410 ct Loose Stone

Tanzanian Rhodolite Garnet 0.410 ct Loose Stone
Sold out Loose 0.264ct Sri Lankan Blue Sapphire

Loose 0.264ct Sri Lankan Blue Sapphire
Sold out スリランカ産ブルーサファイア 0.826ctルース

Sri Lankan Blue Sapphire 5.5mm/0.826ct Loose Stone
Sold out メキシコ産オパール 0.244ctルース

【Sale from 10 PM on May 5th】Mexican Opal 0.244 ct Loose Stone (Contraluz Opal)
Sold out 【12561280掲載】ブラジル産レインボースキャポライト 0.393ctルース

Brazilian Rainbow Scapolite 0.393ct Loose Stone
Sold out Untreated Sri Lankan Star Sapphire 0.403 ct Loose

Untreated Sri Lankan Star Sapphire 0.403 ct Loose

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.