¥50,000 - ¥100,000

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

Brazilian parti-color tourmaline 2.702ct loose stone Sale price¥69,800

Brazilian rhodonite 3.224ct loose stone Sale price¥98,000

Czech Aragonite 8.0mm/2.082ct Loose Stone Sale price¥69,800

Spanish Sphalerite 8mm/2.796ct loose stone Sale price¥69,800

Brazilian Rubellite 1.027ct Loose Stone Sale price¥69,800

Bulgarian Green Sphalerite 0.403ct Loose Stone Sale price¥69,800

K18/Pt950 カンボジア産ブルージルコン0.48ct・パライバトルマリンリング

K18/Pt950 Cambodian Blue Zircon 0.48ct Paraiba Tourmaline Ring Sale price¥89,800

Elbaite tourmaline from Mozambique 1.138ct loose stone (CuO: 0.1%, Mn0: 1.6%) Sale price¥59,800

ブラジル産非加熱ピンクインペリアルトパーズ（シェリーピンク） 1.029ctルース

Brazilian unheated pink imperial topaz (sherry pink) 6.4mm/1.029ct loose stone Sale price¥59,800

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 2.736ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 2.736ct loose stone Sale price¥79,800

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 3.512ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 3.512ct Loose Sale price¥98,000

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 2.888ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 2.888ct Loose Sale price¥88,000

Mozambique rubellite 2.752ct loose stone Sale price¥69,800

Mozambique Rubellite 2.141ct Loose Stone Sale price¥69,800

Elbaite tourmaline from Mozambique 1.192ct loose stone (CuO: 0.1%, MnO: 1.5%) Sale price¥59,800

Grandidierite from Madagascar 0.264ct loose stone Sale price¥88,800

Myanmar Taaffeite 6.9mm/1.408ct loose stone Sale price¥98,000

Brazilian Morganite 4.720ct loose stone Sale price¥98,000

Tanzanian Mint Garnet 1.276ct Loose Stone Sale price¥69,800

Pakistani Lazurite (Azurite) 0.375ct loose stone Sale price¥59,800

Sri Lankan Star Sapphire 5.225ct Loose Sale price¥98,000

Pink diamond 0.072ct loose (FANCY DEEP PURPLE PINK, I1) Sale price¥69,800

非加熱ブラジル産パライバトルマリン 0.067ctルース（CuO:1.4%、MnO:2.4%）

Unheated Brazilian Paraiba Tourmaline 0.067ct loose stone (CuO: 1.4%, MnO: 2.4%) Sale price¥59,800

K18マダガスカル産スフェーン0.48ct・グリーンダイヤモンド・オパールペンダント（ネックレス）

K18 Madagascar sphene 0.48ct, green diamond, opal pendant (necklace) Sale price¥98,000

Unheated Brazilian Paraiba Tourmaline 0.071ct loose stone (CuO: 2.1%, MnO: 2.2%) Sale price¥59,800

【さくらシェイプ】カンボジア産ブルージルコン 8mm/2.909ct《コラボ》ルースワッペン

[Sakura Shape] Cambodian Blue Zircon 8mm/2.909ct {Collaboration} Loose Patch Sale price¥59,800

[Sakura Shape] Tanzanite from Tanzania 6mm/0.889ct {Collaboration} Loose Patch Sale price¥59,800

Brazilian Paraiba Tourmaline 0.200ct loose stone (CuO: 1.7%, MnO: 2.8%) Sale price¥98,000

Brazilian Dolomite 4.070ct Loose Stone, Japan-Germany Mirror Sale price¥98,000

非加熱ブラジル産パライバトルマリン 0.051ctルース（CuO:2.0%、MnO:2.3%）

Unheated Brazilian Paraiba Tourmaline 0.051ct loose stone (CuO: 2.0%, MnO: 2.3%) Sale price¥55,800

非加熱ブラジル産パライバトルマリン 0.079ctルース（CuO:1.8%、MnO:2.6%）

Unheated Brazilian Paraiba Tourmaline 0.079ct loose stone (CuO: 1.8%, MnO: 2.6%) Sale price¥69,800

Pigeon Blood Ruby 0.38ct Loose AIGS Sale price¥59,800

Brazilian Indigolite Tourmaline 1.514ct Loose Stone, Japan-Germany Exchange Sale price¥59,800

Namibian Dioptase 0.134ct Loose Stone, Japan-Germany Mirror Sale price¥59,800

Tasmanian Crocoite 0.292ct Loose Stone, Japan-Germany Exchange Sale price¥98,000

[Koshu Precious Stone Cut] Scololite 6.039ct Loose Stone Patch Sale price¥69,800

【クローバーインカット】コロンビア産ミントカラーエメラルド 8mm/1.576ct《コラボ》ルース　ワッペン

[Clover in cut] Colombian mint color emerald 8mm/1.576ct {Collaboration} Loose patch Sale price¥59,800

Purple zoisite from Tanzania 1.103ct loose Japanese German edition Sale price¥98,000

[Camellia Cut] Ametrine 12mm/5.411ct {Collaboration} Loose Stone Patch Sale price¥55,800

メキシコ産ファイアオパール 6.117ctルース (バイカラーファイアオパール)

Mexican Fire Opal 6.117ct Loose (Bicolor Fire Opal) Sale price¥98,000

【カメリアカット】オレゴンサンストーン 2.102ct《コラボ》ルース　ワッペン

[Camellia Cut] Oregon Sunstone 14mm/2.102ct {Collaboration} Loose Patch Sale price¥79,800

イエローダイヤモンド 4mm/0.261ctルース(LIGHT YELLOW, VS-2, VeryGood)（セミオーダーメイドセット）

[Staff Selection] Yellow Diamond 4mm/0.261ct Loose (LIGHT YELLOW, VS-2, Very Good) (Semi-Custom Made Set) Sale price¥59,800

Hot pink spinel, rose quartz, Santa Maria aquamarine, and amethyst 13-stone half eternity ring set (2.0mm) Sale price¥69,800

Paraiba tourmaline, pink sapphire, opal, pink spinel 13 stone half eternity ring set (2.0mm) Sale price¥98,000

Royal Blue Sapphire 1.182ct Loose (Calfshead) AIGS Sale price¥98,000

モザンビーク産エルバイトトルマリン 1.371ctルース（CuO:0.2%,MnO:2.6%）

Elbaite tourmaline from Mozambique 1.371ct loose stone (CuO: 0.2%, MnO: 2.6%) Sale price¥59,800

【甲州貴石切子plusthree】メキシコ産ファイアオパール 4.633ctルース《コラボ》ワッペン

[Koshu Precious Stones plusthree] Mexican Fire Opal 4.633ct Loose Stone [Collaboration] Patch Sale price¥59,800

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.