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Width: 7.1 - 8.0mm

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アルマンディンガーネット 1.471ctルース

Almandine Garnet 1.471ct Loose Stone Sale price¥15,800
アルマンディンガーネット 1.988ctルース

Almandine Garnet 1.988ct Loose Stone Sale price¥18,800
アルマンディンガーネット 1.485ctルース

Almandine Garnet 1.485ct Loose Stone Sale price¥15,800
インド産ムーンストーン 8mm/1.879ctルース

Indian Moonstone 8mm/1.879ct Loose Sale price¥6,980
雲母インクォーツ 0.980ctルース

Mica in Quartz 0.980ct Loose Sale price¥6,980
雲母インクォーツ 0.834ctルース

Mica in Quartz 0.834ct Loose Stone Sale price¥6,980
Sold out 【12563281掲載】スリランカ産ムーンストーン 0.794ctルース

[On sale June 14th at 10 PM] Sri Lankan Moonstone 0.794ct Loose
coming soon 【12563195掲載】コンゴ産ピンクトルマリン 1.056ctルース

[Lottery Sale_0612_03] [Sakura Cut] Pink Tourmaline from Congo 7.0mm/1.056ct Loose Stone with Certificate Sale price¥49,800
coming soon 【12563109掲載】イエローサファイア 2.150ctルース

[Lottery Sale_0612_09] Yellow Sapphire 2.150ct Loose Gemstone GIT Sale price¥158,000
Sold out スリランカ産スピネル 2.670ctルース

【Sales Start: June 8, 10 PM JST】Sri Lankan Spinel (Dark Green) 2.670ct Loose Gemstone with Japan-Germany Gemological Report
Sold out グリーンランド産タグトゥパイト 0.998ct原石

[On sale 6/7 10 PM JST] Greenland Tugtupite Rough 0.998 ct with Japanese and German certification
Sold out 合成サファイア 2.348ctルース

【On Sale May 21st, 10 PM JST】Synthetic Sapphire 2.348 ct Loose Stone
Sold out スリランカ産ヘソナイトガーネット 1.968ctルース

[On Sale May 2nd, 10 PM JST] Sri Lankan Hessonite Garnet 1.968ct Loose Stone
Sold out コロンビア産パイライトインエメラルド 2.503ctルース

2.503 ct Loose Emerald with Pyrite from Colombia

Sold out ラベンダークォーツ（スコロライト） 1.761ctルース

[Koshu Precious Stones Plusthree] Lavender Quartz (Scorolite) 1.761ct Loose Stone
Sold out メキシコ産ウォーターオパール 1.018ctルース

[Published 12562689] Mexican Water Opal 1.018ct Loose Stone
Sold out [Sakura Cut] Mongolian Andesine 8.0mm/1.652ct Necklace

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

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 メキシコ産ファイアオパール 1.104ctルース

Mexican Fire Opal 1.104ct Loose

Sold out メデューサクォーツ（パライバクォーツ） 1.975ctルース

Brazilian Medusa Quartz (Paraiba Quartz) 1.975ct Loose Stone
Sold out ブラジル産メデューサクォーツ（パライバクォーツ） 3.122ctルース

Brazilian Medusa Quartz (Paraiba Quartz) 3.122ct Loose Stone
Sold out YAG（イットリウムアルミニウムガーネット） 1.927ctルース

YAG (Yttrium Aluminum Garnet) 7.1mm/1.927ct Loose Stone by Nikkei Kan
Sold out 【12562076掲載】アメリカ産オレゴンサンストーン 1.334ctルース

Oregon Sunstone from the United States, 7.2mm/1.334ct loose stone
Sold out Oregon Sunstone from USA 7.1mm/1.366ct Loose

Oregon Sunstone from USA 7.1mm/1.366ct Loose
Sold out 【12562053掲載】カナダ産カナダ産ユーディアライト 3.359ctルース

3.359ct Canadian Eudialyte Loose Stone with Identification Report
Sold out 【12561997掲載】メキシコ産ファイアオパール 1.461ctルース

Mexican Fire Opal 1.461ct Loose (Egg-in-Opal)

Sold out 【12561985掲載】アメリカ産オレゴンサンストーン 1.290ctルース

Oregon Sunstone from USA 7.1mm / 1.290ct Loose
Sold out 【12561983掲載】アメリカ産オレゴンサンストーン 1.325ctルース

Oregon Sunstone from the USA, 1.325ct loose
Sold out 【12561972掲載】ブラジル産デュモルチェライトインクォーツ 2.450ctルース

Brazilian Dumortierite in Quartz 2.450ct Loose Stone
Sold out 【12561946掲載】ブラジル産エメラルドインクォーツ 2.358ctルース

Brazilian emerald in quartz 2.358ct loose stone
Sold out 【12561945掲載】ブラジル産エメラルドインクォーツ 3.367ctルース

Brazilian emerald in quartz 3.367ct loose stone
Sold out 【12561943掲載】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） 2.360ctルース

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 2.360ct Loose Stone
Sold out 奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 1.827ctルース

Rainbow Garnet (Andradite Garnet) 1.827ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out Tanzanian zircon, 1.672ct loose

Tanzanian zircon, 1.672ct loose
Sold out [Sakura InCut] Synthetic Sapphire 2.610ct Loose Stone (Synthetic Pink Sapphire)

[Sakura InCut] Synthetic Sapphire 2.610ct Loose Stone (Synthetic Pink Sapphire)

Sold out Sri Lankan Cobalt Spinel (Blue Spinel) 3.202ct Loose Stone (Needle-like Inclusions) Japan-German Rare Stone

Sri Lankan Cobalt Spinel (Blue Spinel) 3.202ct Loose Stone (Needle-like Inclusions) Japan-German Rare Stone

Sold out Congo Cobalt Calcite 7.5mm/1.791ct Loose Stone

Congo Cobalt Calcite 7.5mm/1.791ct Loose Stone
Sold out [Sakura Shape] Oregon Sunstone from the United States, 1.224ct Loose

[Sakura Shape] Oregon Sunstone from the United States, 1.224ct Loose
Sold out Sri Lankan moonstone 7.2mm/1.342ct loose gemstone

Sri Lankan moonstone 7.2mm/1.342ct loose gemstone
Sold out US Oregon Sunstone, 1.640 ct, Loose

US Oregon Sunstone, 1.640 ct, Loose
Sold out USA Oregon Sunstone 2.160ct Loose

USA Oregon Sunstone 2.160ct Loose
Sold out USA Oregon Sunstone 1.869ct Loose

USA Oregon Sunstone 1.869ct Loose
Sold out Madagascar Andesine Labradorite (commonly known as Rainbow Moonstone) 4.867ct Loose Stone

Madagascar Andesine Labradorite (commonly known as Rainbow Moonstone) 4.867ct Loose Stone
Sold out Unheated Brazilian Bicolor Topaz (Bicolor Blue Topaz) 2.884ct Loose Gemstone

Unheated Brazilian Bicolor Topaz (Bicolor Blue Topaz) 2.884ct Loose Gemstone
Sold out [On Sale at 10 PM on December 7th] Rainbow Garnet (Andradite Garnet) 2.365ct Loose Stone from Tenkawa Village, Nara Prefecture

[On Sale at 10 PM on December 7th] Rainbow Garnet (Andradite Garnet) 2.365ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out [Sakura In-Cut] Tibetan Andesine 8.0mm/1.366ct Loose Stone

[Sakura In-Cut] Tibetan Andesine 8.0mm/1.366ct Loose Stone

Sold out Loose 1.206ct Oregon Sunstone from the USA

Loose 1.206ct Oregon Sunstone from the USA

Sold out Red coral (coral) 1.406ct loose stone

Red coral (coral) 1.406ct loose stone

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.