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Sold out タンザニア産タンザナイト 0.481ctルース

Tanzanite from Tanzania 5.0mm/0.481ct loose stone
Sold out スリランカ産非加熱シルキーサファイア 0.902ctルース

Unheated silky sapphire from Sri Lanka 0.902ct loose stone
Sold out マダガスカル産サファイア 0.550ctルース

Madagascar sapphire 0.550ct loose stone
Sold out スリランカ産ピンクスピネル 0.493ctルース

Sri Lankan pink spinel 0.493ct loose stone
Sold out ブラジル産バイカラートルマリン 0.761ctルース

Brazilian Bicolor Tourmaline 0.761ct Loose Stone (Rose Cut)
Sold out Limited to 7 stones: 1 loose kyanite stone from Nepal (royal blue color, 4mm, round cut) Multiple purchase discounts available

Limited to 7 stones: 1 loose kyanite stone from Nepal (royal blue color, 4mm, round cut) Multiple purchase discounts available
Sold out スペイン産スファレライト 0.788ctルース

Spanish Sphalerite 5.3mm/0.788ct loose stone
Sold out ゾイサイト 0.333ctルース

Tanzania Bicolor Zoisite 4.6mm/0.333ct Loose Stone
Sold out ロシア産ダイヤモンド原石（ソーヤブル） 0.618ct原石

Russian diamond rough (sawable) 0.618ct rough (trigon)
Sold out Water Play 13 Stone Set (Santa Maria Aquamarine, Sea Blue Chalcedony, Blue Zircon, Diamond, etc.) Half Eternity Ring Set (2.0mm)

Water Play 13 Stone Set (Santa Maria Aquamarine, Sea Blue Chalcedony, Blue Zircon, Diamond, etc.) Half Eternity Ring Set (2.0mm)
Sold out Night purple 13 stone set (hackmanite, tanzanite, black spinel, diamond, etc.) Half eternity ring set (2.0mm)

Night purple 13 stone set (hackmanite, tanzanite, black spinel, diamond, etc.) Half eternity ring set (2.0mm)
Sold out ブラジル産アレキサンドライトキャッツアイ 0.223ctルース

Brazilian Alexandrite Cat's Eye 3.4mm/0.223ct Loose Stone (Hemachita Mine)
Sold out ブラジル産アレキサンドライトキャッツアイ 0.219ctルース

Brazilian Alexandrite Cat's Eye 3.3mm/0.219ct Loose Stone (Hemachita Mine)
Sold out アウイナイト 0.064ctルース

German Awinite 2.7mm/0.064ct loose stone
Sold out Afghanite from Afghanistan 0.360ct loose stone

Afghanite from Afghanistan 0.360ct loose stone
Sold out 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） 0.399ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.399ct loose stone
Sold out アメリカ産オレゴンサンストーン 2.467ctルース

Oregon Sunstone from the United States 2.467ct loose stone
Sold out スリランカ産クリソベリルキャッツアイ 0.532ctルース

Sri Lankan Chrysoberyl Cat's Eye 0.532ct Loose Stone
Sold out アンゴラ産グリーンダイヤモンド原石（ソーヤブル） 0.525ct原石

Angola Green Diamond Rough (Sawable) 0.525ct Rough
Sold out 北海道産UVオパール 11.900ctルース

[12532439 published] Hokkaido UV opal 11.900ct loose with patch
Sold out 【KEN氏】ゴーシェナイト 1.03ctルース - カラッツSTORE

Goshenite 1.03ct loose stone
Sold out カナリーイエローダイヤモンド（トリートメント） 0.029ctルース

[Posted in 12530233] Canary Yellow Diamond (Treatment) 0.029ct Loose
Sold out ブラジル産レインボーアクアマリン 0.901ctルース

[On Sale at 10 PM on August 16th] Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 0.901ct Loose Stone
Sold out ブラジル産レインボーアクアマリン 1.309ctルース

Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.309ct Loose Stone
Sold out 非加熱パパラチアサファイア 3.9mm/0.290ctルース GIA

[On Sale at 10 PM on August 16th] Unheated Padparadscha Sapphire 3.9mm/0.290ct Loose GIA
Sold out スリランカ産ツインスターサファイア 3.242ctルース

[Available at 10 PM on August 15th] Sri Lankan Twin Star Sapphire 3.242ct Loose
Sold out [Available at 10 PM on August 10th] Brazilian Rainbow Aquamarine Loose Stone (Iridescent Aquamarine) {Multiple Purchase Discounts Available}

[Available at 10 PM on August 10th] Brazilian Rainbow Aquamarine Loose Stone (Iridescent Aquamarine) {Multiple Purchase Discounts Available}
Sold out [Available at 10 PM on August 13th] [Limited to 9 stones] One loose Brazilian rainbow aquamarine (oval cut, average 0.8 carats) [Multiple purchase discounts available]

[Available at 10 PM on August 13th] [Limited to 9 stones] One loose Brazilian rainbow aquamarine (oval cut, average 0.8 carats) [Multiple purchase discounts available]
Sold out [8/10:22 Sale] {Limited to 5 Stones} Pentagon Cut Gacha (Sphene, Sunstone, Emerald, etc.) 1 Loose Stone {Multiple Purchase Discounts Available}

[8/10:22 Sale] {Limited to 5 Stones} Pentagon Cut Gacha (Sphene, Sunstone, Emerald, etc.) 1 Loose Stone {Multiple Purchase Discounts Available}
Sold out [Available at 10 PM on August 9th] [Limited to 2 stones] 1 Nigerian Cobalt Garnite [Multiple purchase discounts available]

[Available at 10 PM on August 9th] [Limited to 2 stones] 1 Nigerian Cobalt Garnite [Multiple purchase discounts available]
Sold out ジンバブエ産スフェーン 0.356ctルース

[On sale from 10pm on August 21st] Zimbabwean sphene 0.356ct loose stone
Sold out ジンバブエ産スフェーン 0.354ctルース

[On sale at 10pm on August 9th] Zimbabwean sphene 0.354ct loose stone
Sold out ジンバブエ産スフェーン 0.287ctルース

[On Sale at 10 PM on August 9th] Zimbabwean Sphene 4.0mm/0.287ct Loose Stone
Sold out アメリカ産ペリドット 0.423ctルース

[On Sale at 10 PM on August 26th] American Peridot 0.423ct Loose Stone
Sold out アメリカ産ペリドット 0.408ctルース

[On sale at 10pm on September 7th] Pakistani Peridot 0.408ct Loose Stone
Sold out メキシコ産ファイアオパール（ファセットカット） 0.359ctルース

[On Sale at 10 PM on August 20th] Mexican Fire Opal (Faceted) 0.359ct Loose
Sold out メキシコ産オパール（ファセットカット） 0.187ctルース

[On Sale at 10 PM on August 21st] Mexican Opal (Faceted) 0.187ct Loose
Sold out メキシコ産ファイアオパール（ファセットカット） 0.207ctルース

[On Sale at 10 PM on August 24th] Mexican Fire Opal (Faceted) 0.207ct Loose
Sold out インド産ムーンストーン 1.863ctルース

[On sale at 10pm on August 22nd] Indian Moonstone 1.863ct Loose
Sold out マダガスカル産グランディディエライト 0.042ctルース

[On Sale at 10 PM on August 9th] Madagascar Grandidierite 0.042ct Loose Stone
Sold out マダガスカル産グランディディエライト 0.066ctルース

[On Sale at 10 PM on August 9th] Madagascar Grandidierite 0.066ct Loose Stone
Sold out アフガニスタン産ハックマナイト 0.793ctルース

[On Sale at 10 PM on August 9th] Afghanistan Hackmanite 0.793ct Loose Stone
Sold out ブラジル産グリーン・スポジュメン 0.391ctルース

[On Sale at 10 PM on August 8th] Brazilian Green Spodumene 0.391ct Loose Stone
Sold out ブラジル産ロードナイト 1.444ctルース

[On sale at 10pm on August 14th] Brazilian Rhodonite 1.444ct Loose Stone
Sold out ブラジル産ロンドンブルートパーズ 0.389ctルース

[8/13 22:00 Sale] Brazilian London Blue Topaz 0.389ct Loose
Sold out ブラジル産ロンドンブルートパーズ 0.603ctルース

[8/8 22:00] Brazilian London Blue Topaz 0.603ct Loose
Sold out ブラジル産ロンドンブルートパーズ 0.422ctルース

[8/8 22:00] Brazilian London Blue Topaz 0.422ct Loose Stone
Sold out ジンバブエ産スフェーン 0.441ctルース

[On sale at 10pm on August 13th] Zimbabwean sphene 0.441ct 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.