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Sold out 【猫カット】ブラジル産ゲーサイトインアメジスト 0.561ctルース

[Cat Cut] Brazilian Goethite Amethyst 0.561ct Loose Stone
Sold out Limited to 9 stones: 1 Spinel Gacha (August birthstone) including 1 bicolor spinel (0.93 ct) (Multiple purchase discounts available)

Limited to 9 stones: 1 Spinel Gacha (August birthstone) including 1 bicolor spinel (0.93 ct) (Multiple purchase discounts available)

Sold out サファリン 0.320ctルース

Sri Lankan saffron 0.320ct loose stone with certificate of authenticity
Sold out Limited to 15 stones: 1 loose Smithsonite stone (average 2 carats) Multiple purchase discounts available

Limited to 15 stones: 1 loose Smithsonite stone (average 2 carats) Multiple purchase discounts available
Sold out 南アフリカ産ダイヤモンド原石（ソーヤブル） 0.083ct原石

South African diamond rough (sawable) 0.083ct rough

Sold out Limited to 5 stones: 1 loose Madagascar sapphire (3mm, hexagonal cut) Multiple purchase discounts available

Limited to 5 stones: 1 loose Madagascar sapphire (3mm, hexagonal cut) Multiple purchase discounts available
Sold out Limited to 5 stones Leopard print cat cut KARATZ collaboration (Amber, 8.5mm) Multiple purchase discounts available

Limited to 5 stones Leopard print cat cut KARATZ collaboration (Amber, 8.5mm) Multiple purchase discounts available
Sold out [3/31 Reception ends] "Given the Movie Hiiragimix" x KARATZ Collaboration Jewelry Akihiko Kaji Model Ring

[3/31 Reception ends] "Given the Movie Hiiragimix" x KARATZ Collaboration Jewelry Akihiko Kaji Model Ring

Sold out [3/31 Reception ends] "Given the Movie: Hiiragi Mix" x KARATZ Collaboration Jewelry Haruki Nakayama Model Ring

[3/31 Reception ends] "Given the Movie: Hiiragi Mix" x KARATZ Collaboration Jewelry Haruki Nakayama Model Ring

Sold out [3/31 Reception ends] "Given the Movie Hiiragimix" x KARATZ Collaboration Jewelry Uenoyama Ritsuka Model Ring

[3/31 Reception ends] "Given the Movie Hiiragimix" x KARATZ Collaboration Jewelry Uenoyama Ritsuka Model Ring

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） 0.352ctルース

Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.352ct Loose Stone
Sold out Limited to 6 stones: 1 topaz rough stone (November birthstone) Multiple purchase discounts available

Limited to 6 stones: 1 topaz rough stone (November birthstone) Multiple purchase discounts available
Sold out ブラジル産パライバトルマリン 0.240ctルース

Paraiba tourmaline from Brazil 4.1mm/0.240ct loose

Sold out オーストラリア産ボルダーオパール 52.582ctルース

Australian boulder opal 52.582ct loose

Sold out 【5/24 22時販売】リボンの騎士×KARATZコラボ◆連載開始70周年記念ジュエリー◆ネックレス - カラッツSTORE

[Limited to 70 items] Ribbon Knight x KARATZ collaboration ◆ 70th anniversary commemorative jewelry ◆ Necklace

Sold out 【甲州貴石切子plusthree】ロッククリスタル 15.588ct《切子玉》ルース ワッペン付

[Koshu Precious Stone Kiriko PlusThree] Rock Crystal 15.588ct《Kirikodama》 Loose with Patch

Sold out Yuichiro Abe goods set [clutch bag & acrylic key chain]

Yuichiro Abe goods set [clutch bag & acrylic key chain]

Sold out 安部祐一朗氏グッズセット【キャンバス＆アクルルキーホルダー＆オレゴンサンストーンの宝石】

Yuichiro Abe goods set [canvas & acrylic key chain & Oregon sunstone jewelry]

Sold out Yuichiro Abe goods set [sticker & waterproof smartphone case]

Yuichiro Abe goods set [sticker & waterproof smartphone case]

Sold out 【ダンデライオンカット】メキシコ産ファイアオパール 7mm《コラボ》ルース ワッペン付

[Dandelion cut] Fire opal 7mm loose

Sold out 【12533788掲載】ティンカーベルクォーツ（ピンクファイヤークォーツ） 4.764ctルース

Tinker Bell Quartz (Pink Fire Quartz) 4.764ct loose

Sold out ティンカーベルクォーツ（ピンクファイヤークォーツ） 3.968ctルース

Tinker Bell Quartz (Pink Fire Quartz) 3.968ct loose

Sold out ベニトアイト1石（プリンセスカット,2.2mm）

Benitoite 1 stone (princess cut, 2.2mm)《Discount available for multiple purchases》

Sold out 【カメリアカット】レモンクォーツ8mmルース 直筆サイン付&ワッペン付 - カラッツSTORE

[Camellia cut] Lemon quartz 8mm loose with autograph and emblem

Sold out K18レピドクロサイトインクォーツ2.37ct・ダイヤモンドリング - カラッツSTORE

[Colorful] K18 lepidocrocite in quartz 2.37ct diamond ring

Sold out 【12525545掲載】アルマンディンガーネットキャッツアイ 1.820ctルース

Almandine garnet cat's eye 1.820ct loose

Sold out Bicolor tanzanite 2.270ct loose

Bicolor tanzanite 2.270ct loose

Sold out 【ダンデライオンカット】シトリン 5.58ctルース（ライトカラー） - カラッツSTORE

[Dandelion cut] Citrine 5.58ct loose (light color)

Sold out 【さくらインカット】オレゴンサンストーン 1.55ctルース - カラッツSTORE

[Sakura Incut] Oregon Sunstone 1.55ct Loose

Sold out 【宝石商の道具】加熱処理のエチオピア産オパール 1石（ブラックオパールとの見分けシート付） - カラッツSTORE

1 heat-treated Ethiopian opal (includes a sheet to distinguish it from black opal)

Sold out [Item 12562618] Sri Lankan Bicolor Sapphire 0.405ct Loose Stone

[Item 12562618] Sri Lankan Bicolor Sapphire 0.405ct Loose Stone
Sold out [12564127 listed] Apatite 0.764ct loose stone

[12564127 listed] Apatite 0.764ct loose stone
Sold out [Item 12564405] Axinite from Pakistan (Blue Tint) 0.347ct Loose Stone

[Item 12564405] Axinite from Pakistan (Blue Tint) 0.347ct Loose Stone

Sold out Benitoite Gradation 6 Stone Set (2.0mm, Round Cut, Including Top Quality) 《Multiple Purchase Discount Available》

Benitoite Gradation 6 Stone Set (2.0mm, Round Cut, Including Top Quality) 《Multiple Purchase Discount Available》
Sold out [10/4, 10 PM Release] Brazilian Amethyst 8.984ct Loose Gemstone

[10/4, 10 PM Release] Brazilian Amethyst 8.984ct Loose Gemstone
Sold out ミャンマー産カラーチェンジジルコン 0.249ctルース

[On sale 10/11 at 22:00] Burmese color-change zircon 0.249ct loose stone
Sold out ブラジル産デュモルチェライトインクォーツ 0.757ctルース

[Available 10/10 at 10 PM] Brazilian Dumortierite in Quartz 0.757ct Loose Gemstone
Sold out インド産アイオライトサンストーン 2.460ctルース

[Available Oct 11, 10 PM] Indian Iolite Sunstone 2.460ct Loose Gemstone
Sold out インド産アイオライトサンストーン 1.461ctルース

[Available 10/11 at 10 PM] Indian Iolite Sunstone 1.461ct Loose Gemstone
Sold out インド産アイオライトサンストーン 1.084ctルース

[Available 10/11 at 10 PM] Indian Iolite Sunstone 1.084ct Loose Gemstone
Sold out インド産アイオライトサンストーン 0.866ctルース

[10/11 10 PM Sale] Indian Iolite Sunstone 0.866ct Loose Stone
Sold out Brazilian Paraiba Tourmaline (Cuprian Elbaite) 0.210ct Loose Stone (CuO: 1.8wt%, MnO: 3.7wt%) GIA

Brazilian Paraiba Tourmaline (Cuprian Elbaite) 0.210ct Loose Stone (CuO: 1.8wt%, MnO: 3.7wt%) GIA

Sold out Brazilian Paraiba Tourmaline 0.030ct Loose Stone (CuO: 1.1%, MnO: 3.8%)

Brazilian Paraiba Tourmaline 0.030ct Loose Stone (CuO: 1.1%, MnO: 3.8%)

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.