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イエローダイヤモンド 0.188ctルース(FANCY INTENSE YELLOW, VS1)

Yellow diamond 0.188ct loose (FANCY INTENSE YELLOW, VS1) Sale price¥47,800
[Option] Laser engraving of characters and symbols

[Option] Laser engraving of characters and symbols Sale price¥5,000
《Tucson New Arrival - Limited to 8 Stones》Zambian Canary Yellow Tourmaline Average 0.47ct《Bulk Purchase Discount Available》

《Tucson New Arrival - Limited to 8 Stones》Zambian Canary Yellow Tourmaline Average 0.47ct《Bulk Purchase Discount Available》 Sale price¥7,980
エメラルド 15.219ctルース 日独鑑

Natural Emerald from Brazil, 15.219 ct, Loose Stone, Nichidoku Identification Report Sale price¥398,000
カンボジア産ブルージルコン（ラタナキリブルー） 23.105ctルース 鑑別書

[On Sale May 5th at 10 PM] Cambodian Blue Zircon (Ratanakiri Blue) 23.105ct Loose Stone with Appraisal Sale price¥498,000
【12562858掲載】ベトナム産ルビー 1.758ctルース

1.758 ct Ruby Loose Stone from Vietnam with Identification Report Sale price¥49,800
スリランカ産イエローサファイア 0.517ctルース

[On Sale May 9th, 10 PM] Sri Lankan Yellow Sapphire 0.517ct Loose Gemstone Sale price¥12,800
ゴーシェナイト 0.846ctルース

Goshenite 0.846ct loose stone Sale price¥7,980
[On Sale June 7th, 10 PM] Limited to 15 Stones: Afghan Pink Diaspore Single Stone Loose Gemstone (Avg. 0.3ct) - Multiple Purchase Discount Available

[On Sale June 7th, 10 PM] Limited to 15 Stones: Afghan Pink Diaspore Single Stone Loose Gemstone (Avg. 0.3ct) - Multiple Purchase Discount Available Sale price¥3,980
[On sale June 8th, 10 PM JST] 《Limited to 4 stones》Needle-in-Blue Topaz Gacha💎Average 45ct《Multiple purchase discount available》

[On sale June 8th, 10 PM JST] 《Limited to 4 stones》Needle-in-Blue Topaz Gacha💎Average 45ct《Multiple purchase discount available》 Sale price¥9,800
[On sale May 24th at 10 PM] "Limited to 12 Stones" Blue Gemstone Gacha 💎 Brazil Paraiba Tourmaline (CuO: 1.5%, MnO: 3.2%) and Zimbabwe Euclase, normally priced at ¥35,800, and more! (Multiple purchase discount available)

[On sale May 24th at 10 PM] "Limited to 12 Stones" Blue Gemstone Gacha 💎 Brazil Paraiba Tourmaline (CuO: 1.5%, MnO: 3.2%) and Zimbabwe Euclase, normally priced at ¥35,800, and more! (Multiple purchase discount available) Sale price¥3,980
[Sales begin 10 PM JST on 6/21] Dragon Garnet Single Loose Stone (Round Cut, 5mm) - Limited to 5 Stones - Multi-Purchase Discount Available

[Sales begin 10 PM JST on 6/21] Dragon Garnet Single Loose Stone (Round Cut, 5mm) - Limited to 5 Stones - Multi-Purchase Discount Available Sale price¥8,800
[Sale on June 19th at 10 PM] "Limited to 20 pieces" Kochi Prefecture Blood Coral Branch (raw, unworked) 1 piece (March birthstone, coral, average 5.8ct) "Discounts for multiple purchases available"

[Sale on June 19th at 10 PM] "Limited to 20 pieces" Kochi Prefecture Blood Coral Branch (raw, unworked) 1 piece (March birthstone, coral, average 5.8ct) "Discounts for multiple purchases available" Sale price¥6,980
ジンバブエ産ダイヤモンド原石（ソーヤブル） 0.228ct原石

[On sale June 20 at 10 PM] Zimbabwe Rough Green Diamond (Sawable) 0.228ct Rough (Trigon) Sale price¥79,800
[On sale June 21st at 10 PM] [Limited to 1 set] Amethyst & Citrine Symmetrical Pair Cut Set 66.58ct Loose Gemstones [Multiple Purchase Discount Available]

[On sale June 21st at 10 PM] [Limited to 1 set] Amethyst & Citrine Symmetrical Pair Cut Set 66.58ct Loose Gemstones [Multiple Purchase Discount Available] Sale price¥29,800
[Available June 20th at 10 PM] Limited to 21 pieces - Kochi Prefecture Blood Coral Branch (rough) 1 stone (March birthstone, coral, average 4.7ct) - Multiple purchase discount available

[Available June 20th at 10 PM] Limited to 21 pieces - Kochi Prefecture Blood Coral Branch (rough) 1 stone (March birthstone, coral, average 4.7ct) - Multiple purchase discount available Sale price¥5,980
グリーントルマリン 2.218ctルース

Brazilian Green Tourmaline 2.218ct Loose Sale price¥25,800
ジンバブエ産ユークレース 0.206ctルース

[On Sale June 26th at 10 PM] Zimbabwean Euclase 3.4mm/0.206ct Loose Gemstone with Certification Sale price¥29,800
ジンバブエ産ユークレース 0.183ctルース

[On Sale June 24 at 10 PM] Zimbabwe Euclase 0.183 ct Loose Stone with Certificate Sale price¥35,800
ロシア産ダイヤモンド原石（ソーヤブル） 0.148ct原石

[On sale June 26, 10 PM JST] Russian rough diamond (sawable) 0.148ct (trigon) Sale price¥49,800
ナミビア産ジェレメジェバイト 0.095ctルース

[Sale on June 25th at 10 PM] Jeremejevite from Namibia, 0.095ct loose stone, with鑑別書 Sale price¥24,800
ナミビア産ジェレメジェバイト 0.089ctルース

[On sale June 21, 10 PM] Jeremejevite 0.089ct Loose Stone from Namibia with certificate Sale price¥25,800
ナミビア産ジェレメジェバイト 0.139ctルース

[Sale on June 21 at 10 PM] Jeremejevite from Namibia 0.139ct Loose Stone with Certification Sale price¥29,800
ミャンマー産ブラックスピネル 3.061ctルース

[On Sale June 23rd at 10 PM] Myanmar Black Spinel 3.061ct Loose Stone with Gemstone Identification Report Sale price¥15,800
マダガスカル産カナリーイエロークリソベリル 0.569ctルース

[On sale June 26th at 10 PM] Madagascar Canary Yellow Chrysoberyl 0.569ct Loose Gemstone with Certificate Sale price¥9,800
マダガスカル産カナリーイエロークリソベリル 0.650ctルース

[On sale June 22nd at 10 PM JST] Madagascar Canary Yellow Chrysoberyl 0.650ct Loose Stone with Appraisal Sale price¥18,800
シエラレオネ産ダイヤモンド原石（ソーヤブル） 0.089ct原石

[On sale June 23rd at 10 PM] Sierra Leone rough diamond (sawable) 0.089ct rough (trigon) Sale price¥27,800
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） 0.619ctルース

[On sale June 21st at 10 PM] Madagascar Andesine-Labradorite (commonly known as Rainbow Moonstone) 0.619ct Loose Stone Sale price¥6,980
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） 0.807ctルース

[On sale June 26th, 10 PM JST] Madagascar Andesine-Labradorite (Common name: Rainbow Moonstone) 0.807ct Loose Sale price¥8,800
メデューサクォーツ（パライバクォーツ） 0.479ctルース

[Sale Date: June 26th, 10 PM JST] Brazilian Medusa Quartz (Paraiba Quartz) 5.4mm/0.479ct Loose Stone (Rose Cut) Sale price¥12,800
スリランカ産シルキーサファイア 0.488ctルース

[Sale begins June 26th, 10 PM JST] Sri Lankan Silky Sapphire 5.1mm/0.488ct Loose Rose Cut Gemstone Sale price¥7,980
アメリカ産シーライト 1.943ctルース

[Sales start June 25th at 10 PM JST] American Scheelite 1.943ct Loose Stone with Certificate Sale price¥12,800
アメリカ産シーライト 2.666ctルース

[Sale on 6/25 at 10 PM] US Scheelite 2.666ct Loose Gemstone with Certificate Sale price¥15,800
ジンバブエ産ユークレース 0.067ctルース

[Sale on June 25th at 10 PM] Zimbabwe Euclase 0.067ct Loose Stone with Certification Sale price¥15,800
K18 ブルーサファイア・ダイヤモンドリング 鑑別書

[On sale June 27, 10 PM] Colorful K18 Blue Sapphire and Diamond Ring with Certificate Sale price¥128,000
ベトナム産アクアマリン 0.398ctルース

Vietnam Aquamarine 0.398ct Loose Sale price¥5,980
ジェレメジェバイト 0.501ctルース

Namibian Jeremejevite 0.501ct loose stone (bicolor) Sale price¥89,800
スカイブルートパーズ 1.719ctルース

Sky blue topaz 1.719ct loose stone Sale price¥8,800
ピンクトルマリン 0.862ctルース

Brazilian Pink Tourmaline 0.862ct Loose Stone Sale price¥12,800
バイカラートルマリン 1.326ctルース

Brazilian Bicolor Tourmaline 7.2mm/1.326ct Loose Stone Sale price¥18,800
ブラジル産ブルートルマリン 0.196ctルース

Brazilian Blue Tourmaline 0.196ct Loose Sale price¥6,980
アクアマリン 0.494ctルース

Vietnam Aquamarine 0.494ct Loose Stone Sale price¥8,800
モザンビーク産パライバトルマリン 0.784ctルース（CuO:0.3%,MnO:1.3%）

[12550887] Paraiba Tourmaline from Mozambique 0.784ct loose stone Sale price¥128,000
ファイアオパール 0.593ctルース

Mexican Fire Opal 0.593ct Loose (Faceted Cut) Sale price¥9,800
ファイアオパール 0.718ctルース

Mexican Fire Opal 0.718ct Loose Sale price¥9,800
YAG（イットリウムアルミニウムガーネット） 0.208ctルース

YAG (Yttrium Aluminum Garnet) 3.3mm/0.208ct Loose Stone (Rose Cut) Sale price¥5,980
YAG（イットリウムアルミニウムガーネット） 0.346ctルース

YAG (Yttrium Aluminum Garnet) 4.1mm/0.346ct Loose Stone (Rose Cut) Sale price¥8,800

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.