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Sold out ブルーオパール 2.530ctルース

Peruvian Blue Opal 2.530ct Loose
Sold out カメレオンダイヤモンド 0.110ctルース(FANCY BROWNISH GREENISH YELLOW, SI2)

Chameleon Diamond 3mm/0.110ct Loose (FANCY BROWNISH GREENISH YELLOW, SI2)
Sold out メキシコ産ファイアオパール 1.238ctルース

Mexican Fire Opal 1.238ct Loose (Contralus Opal)
Sold out ベトナム産非加熱シルキーピンクサファイア 0.421ctルース

Vietnam unheated silky pink sapphire 0.421ct loose stone
Sold out ブラジル産パライバトルマリン 0.134ctルース（CuO:0.9%,MnO:0.2%）

Paraiba tourmaline from Brazil 0.134ct loose (CuO:0.9%,MnO:0.2%)
Sold out デュモルチェライトインクォーツ 2.870ctルース

Brazilian Dumortierite in Quartz 2.870ct loose stone

バイカラーベニトアイト 0.601ctルース 日独鑑

Bicolor Benitoite 0.601ct Loose Japanese-German Edition Sale price¥458,000
ナイジェリア産グリーンベリル 1.349ctルース

Nigerian Green Beryl 1.349ct Loose Stone Sale price¥98,000
Sold out [3/31 Reception ends] "Given the Movie: Hiiragi Mix" x KARATZ Collaboration Jewelry Given Pendant & Necklace Extension Chain

[3/31 Reception ends] "Given the Movie: Hiiragi Mix" x KARATZ Collaboration Jewelry Given Pendant & Necklace Extension Chain

Sold out Limited to 20 stones, Brazilian dendritic quartz, 1 loose stone, multiple purchase discounts available

Limited to 20 stones, Brazilian dendritic quartz, 1 loose stone, multiple purchase discounts available
Sold out Limited to 12 stones, Pakistani oil in quartz, moving bubbles, 1 loose stone, multiple purchase discounts available

Limited to 12 stones, Pakistani oil in quartz, moving bubbles, 1 loose stone, multiple purchase discounts available
Sold out Limited to 18 stones, Russian Phenakite rough, average 2.7ct, 1 stone, multiple purchase discounts available

Limited to 18 stones, Russian Phenakite rough, average 2.7ct, 1 stone, 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

Limited to 15 stones! Green Oregon Sunstone rough stone from the United States 💎 Average 1.5ct [Multiple purchase discounts available]

Limited to 15 stones! Green Oregon Sunstone rough stone from the United States 💎 Average 1.5ct [Multiple purchase discounts available] Sale price¥5,980
Sold out [Sales End on Thursday, October 31st] "Given the Movie: Hiiragi Mix" x KARATZ Collaboration Jewelry Sato Mafuyu Model

[Sales End on Thursday, October 31st] "Given the Movie: Hiiragi Mix" x KARATZ Collaboration Jewelry Sato Mafuyu Model

Sold out Limited to 25 stones: Brazilian Paraiba Tourmaline (including bicolor, Batalha) rough stones, average size 0.1ct. Discounts for multiple purchases available.

Limited to 25 stones: Brazilian Paraiba Tourmaline (including bicolor, Batalha) rough stones, average size 0.1ct. Discounts for multiple purchases available.
Pt950ブラジル産パライバトルマリン0.034ctリング（フリュクーシュ枠・オーバルカット）

Pt950 Brazilian Paraiba Tourmaline Ring (Fluid Setting, Oval Cut) Sale price¥64,800
K18YGブラジル産パライバトルマリン0.047 リング

K18YG Brazilian Paraiba Tourmaline Ring (Flucche Setting, Pear Shape, Matte Finish) Sale price¥69,800
タンザニア産ピンクゾイサイト 5.8mm/0.848ctルース

Tanzania Pink Zoisite 5.8mm/0.848ct ​​Loose Stone Sale price¥198,000
Sold out Oregon Sunstone from America with beautiful Schiller (Oval Cut, 5×7mm) {Multiple purchase discounts available}

Oregon Sunstone from America with beautiful Schiller (Oval Cut, 5×7mm) {Multiple purchase discounts available}
ブラジル産パライバトルマリンリング・ハーフエタニティリングセット（1.2mm）

Brazilian Paraiba Tourmaline Ring and Half Eternity Ring Set (1.2mm) Sale price¥198,000
K18YGローズカットダイヤモンド0.171ctリング

K18YG rose cut diamond 0.171ct ring Sale price¥89,800
K18YGアメリカ産ターコイズ1.04ctリング（猫カット）

K18YG American Turquoise 1.04ct Ring (Cat Cut) Sale price¥79,800
Sold out Pt950ミャンマー産スピネル0.18ct0.22ctピアス

Pt950 Myanmar spinel 0.18ct 0.22ct earrings

K18PGマダガスカル産ピンクサファイア0.24ct0.25ctピアス（アッシャーカット）

K18PG Madagascar pink sapphire 0.24ct 0.25ct earrings (Asscher cut) Sale price¥59,800
グランディディエライト 0.521ctルース

Madagascar Grandidierite 0.521ct loose stone Sale price¥128,000
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） 1.911ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.911ct loose stone Sale price¥39,800
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） 1.742ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.742ct loose stone Sale price¥37,800
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） 1.099ctルース

Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture 1.099ct loose stone
Limited to 18 stones: Myanmar spinel (3.5mm, pentagonal cut) 1 loose stone. Discounts available for multiple purchases.

Limited to 18 stones: Myanmar spinel (3.5mm, pentagonal cut) 1 loose stone. Discounts available for multiple purchases. Sale price¥2,980
パーティカラートルマリン 2.702ctルース

Brazilian parti-color tourmaline 2.702ct loose stone Sale price¥69,800
【甲州貴石切子plusthree】ロッククリスタル 15mm/10.059ctルース《昴×灯》(ダブル切子タイプ) ワッペン

[Koshu Precious Stone Cut Plusthree] Rock Crystal 15mm/10.059ct Loose Stone "Subaru x Hikaru" (Double Cut Type) Patch Sale price¥45,800
Sold out ブラジル産ロードナイト 3.224ctルース

Brazilian rhodonite 3.224ct loose stone
オーストラリア産ブラックオパール 9.709ctルース

Australian black opal 9.709ct loose stone Sale price¥158,000
チェコ産アラゴナイト 2.082ctルース

Czech Aragonite 8.0mm/2.082ct Loose Stone Sale price¥69,800
ルベライト 3.845ctルース

Brazilian Rubellite 3.845ct loose stone Sale price¥198,000
Sold out ブラジル産ブラジル産パライバトルマリン 0.211ctルース

Brazilian Paraiba Tourmaline 0.211ct loose stone
インド産レインボークォーツ（イリデッセンスクォーツ） 0.940ctルース

Indian Rainbow Quartz (Iridescent Quartz) 0.940ct Loose Stone Sale price¥158,000
Sold out タンザニア産バイカラーサファイア 0.818ctルース（トリカラーサファイア）

Tanzanian bicolor sapphire 0.818ct loose stone (tricolor sapphire)
ダイヤモンド 0.128ctルース（カボションカット,マロンカット）

Diamond 0.128ct loose stone (cabochon cut, maroon cut) Sale price¥39,800
Limited to 5 stones: 1 synthetic moissanite loose stone (Sanjay cut hexagonal, 6mm) Multiple purchase discounts available

Limited to 5 stones: 1 synthetic moissanite loose stone (Sanjay cut hexagonal, 6mm) Multiple purchase discounts available Sale price¥8,800
Sold out Limited to 6 stones: Brazilian Medusa Quartz (Paraiba Quartz) cat cut 1 stone loose (6mm) Multiple purchase discount available

Limited to 6 stones: Brazilian Medusa Quartz (Paraiba Quartz) cat cut 1 stone loose (6mm) Multiple purchase discount available
Sold out 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） 1.885ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.885ct loose stone
Sold out 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） 1.447ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.447ct 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.