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Sold out K18YG マンダリンガーネット 0.361ct リング

[Available at 10 PM on August 12th] 18K Yellow Gold Tanzanian Mandarin Garnet 0.361ct Ring

Sold out [Available at 10 PM on August 17th] Limited to 10 stones: Chinese-grown Xinsha (Cinnabar) Loose Stone (Certificate of Authenticity for Each Stone, Medium Size) - Single Loose Stone (Multiple Purchase Discounts Available)

[Available at 10 PM on August 17th] Limited to 10 stones: Chinese-grown Xinsha (Cinnabar) Loose Stone (Certificate of Authenticity for Each Stone, Medium Size) - Single Loose Stone (Multiple Purchase Discounts Available)

Sold out [Available at 10 PM on August 14th] Limited to 9 stones: 1 loose Chinese cinnabar (pear-shaped) stone (certificate of authenticity included for each stone) [Multiple purchase discounts available]

[Available at 10 PM on August 14th] Limited to 9 stones: 1 loose Chinese cinnabar (pear-shaped) stone (certificate of authenticity included for each stone) [Multiple purchase discounts available]
Sold out [Available at 10 PM on August 11th] Limited to 13 stones: 1 loose Chinese cinnabar (certificate of authenticity included for each stone) [Multiple purchase discounts available]

[Available at 10 PM on August 11th] Limited to 13 stones: 1 loose Chinese cinnabar (certificate of authenticity included for each stone) [Multiple purchase discounts available]
Sold out Limited Stock! Rare Stone Gacha with Certificate of Authenticity (Taaffeite, Bicolor Spinel, and Benitoite) - 1 Loose Stone (Multiple Purchase Discounts Available)

Limited Stock! Rare Stone Gacha with Certificate of Authenticity (Taaffeite, Bicolor Spinel, and Benitoite) - 1 Loose Stone (Multiple Purchase Discounts Available)

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 [Available at 10 PM on August 16th] [Limited to 9 stones] Spinel Gacha (August birthstone) including one bicolor spinel (0.93 ct) [Multiple purchase discounts available]

[Available at 10 PM on August 16th] [Limited to 9 stones] Spinel Gacha (August birthstone) including one bicolor spinel (0.93 ct) [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 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 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 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 マダガスカル産スフェーン 0.615ctルース

[On sale from 10pm on August 15th] Madagascar sphene 0.615ct loose stone
Sold out パープルアパタイト 0.255ctルース

[Available at 10 PM on August 7th] Tanzanian Purple Zoisite 3.9mm/0.255ct Loose Stone with Certificate of Authenticity
Sold out サファリン 0.268ctルース

[Available at 10 PM on August 7th] Sri Lankan saffron 0.268ct loose stone with certificate of authenticity
Sold out 【甲州貴石切子plusthree】レピドクロサイトインクォーツ 1.973ct《コラボ》ルース ワッペン付

[Koshu precious stone Kiriko plusthree] Lepidocrocite in quartz 1.973ct《Collaboration》Loose with emblem
Sold out アウイナイト 0.081ctルース

Hauinite 0.081ct loose
Sold out ルビー 0.209ctルース

Ruby 0.209ct loose
Sold out ロードライトガーネット 3.040ctルース

[Posted 12541231] Rhodolite Garnet 3.040ct Loose
Sold out ハックマナイト 0.507ctルース

Hackmanite 0.507ct loose
Sold out ピンクトルマリン 0.307ctルース

Pink tourmaline 0.307ct loose
Sold out エメラルド 27.866ct原石

[Posted in 12541080] Emerald 27.866ct rough stone
Sold out エメラルド 79.202ct原石

[Posted 12541079] Emerald 79.202ct rough stone
Sold out タンザナイト 1.024ctルース

Tanzanite 1.024ct loose
Sold out アイアンオパール 177.315ct原石

Iron opal 177.315ct loose
Sold out オパール 168.640ct原石

Opal 168.640ct rough stone
Sold out ヘミモルファイト 2.504ctルース

Hemimorphite 2.504ct loose
Sold out [Available at 10 PM on August 15th] Limited to 15 stones: One in five stones is a dandelion-cut spinel. Get one specially cut August birthstone spinel gacha (plus one mahenge spinel). Discounts available for multiple purchases.

[Available at 10 PM on August 15th] Limited to 15 stones: One in five stones is a dandelion-cut spinel. Get one specially cut August birthstone spinel gacha (plus one mahenge spinel). Discounts available for multiple purchases.
Sold out 【KEN氏】ミントトルマリン 3.2mm/0.164ctルース - カラッツSTORE

Mint Tourmaline 3.2mm/0.164ct Loose Stone
Sold out ピンクダイヤモンド 0.030ctルース(FANCY LIGHT PURPLE PINK, SI1)

[Available at 10 PM on August 20th] Pink Diamond 0.030ct Loose (FANCY LIGHT PURPLE PINK, SI1)
Sold out ピンクダイヤモンド 0.039ctルース(LIGHT PINK, VS2)

[Available at 10 PM on August 3rd] Pink Diamond 2.1mm/0.039ct Loose (Light Pink, VS2)
Sold out 【カメリアカット】パープルカルセドニー 12mm/4.959ct《コラボ》ルース ワッペン付

[Camellia Cut] Purple Chalcedony 12mm/4.959ct《Collaboration》Loose with emblem
Sold out ファンシーインテンスイエローダイヤモンド 0.126ctルース(FANCY INTENSE YELLOW, SI-1)

FANCY INTENSE YELLOW, SI-1
Sold out ブラジル産アレキサンドライト 0.044ctルース

Brazilian Alexandrite 0.044ct Loose Stone (Emerald Cut)
Sold out Tagtupite from Greenland 0.236ct loose

Tagtupite from Greenland 0.236ct loose
Sold out マダガスカル産サファイア 0.615ctルース

[On Sale at 10 PM on August 9th] Madagascar Sapphire 0.615ct Loose
Sold out ブラジル産アクアマリン 0.571ctルース

[On Sale at 10 PM on August 14th] Brazilian Aquamarine 0.571ct Loose Stone

Sold out ブラジル産アクアマリン 0.237ctルース

[On Sale at 10 PM on August 9th] Brazilian Aquamarine 0.237ct Loose Stone
Sold out タンザニア産ロードライトガーネット 0.454ctルース

[On Sale at 10 PM on August 5th] Tanzanian Rhodolite Garnet 0.454ct Loose Stone
Sold out タンザニア産ジルコン 0.635ctルース

[On sale at 10pm on August 15th] Tanzanian Yellow Zircon 0.635ct Loose Stone
Sold out ブラジル産アクアマリン 0.300ctルース

[8/15 22:00 Sale] Brazilian Aquamarine 0.300ct 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の取り組みと社会貢献

業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。

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.