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Unheated Brazilian Paraiba Tourmaline 0.071ct loose stone (CuO: 2.1%, MnO: 2.2%)

Unheated Brazilian Paraiba Tourmaline 0.071ct loose stone (CuO: 2.1%, MnO: 2.2%) Sale price¥45,800
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¥39,800
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¥55,800
ブラジル産ルチルクォーツ（ルチルレイテッドクォーツ）8.247ct ルース

Brazilian rutilated quartz (rutilated quartz) 8.247ct loose stone Sale price¥14,800
フラワールチルインクォーツ0.955ctルース

Flower rutilated quartz 0.955ct loose stone Sale price¥9,800
ベニトアイト 0.084ctルース

American Benitoite 0.084ct loose stone (colorless Benitoite) Sale price¥12,800
ブラジル産アレキサンドライト 0.069ctルース（プリンセスカット）

Brazilian Alexandrite 0.069ct loose stone (princess cut) Sale price¥17,800
ブラジル産アレキサンドライト 0.072ctルース（プリンセスカット）

Brazilian Alexandrite 0.072ct loose stone (princess cut) Sale price¥18,800
フラワールチルインクォーツ ルース

Brazilian Flower Rutile in Quartz 5.122ct Loose Stone Sale price¥9,800
ロシア産ダイヤモンド原石（ソーヤブル） 0.088ctルース

Russian rough diamond (sawable) 0.088ct loose Sale price¥22,800
非加熱ブラジル産パライバトルマリン 0.060ctルース（CuO:1.6%、MnO:2.3%）

Brazilian Paraiba Tourmaline 0.060ct Loose (CuO:1.6%, MnO:2.3%) Sale price¥45,800
非加熱ブラジル産パライバトルマリン 0.068ctルース（CuO:1.7%、MnO:2.4%）

Unheated Brazilian Paraiba Tourmaline 0.068ct loose stone (CuO: 1.7%, MnO: 2.4%) Sale price¥49,800
Benitoite 1.8mm/0.025ct loose stone (colorless benitoite)

Benitoite 1.8mm/0.025ct loose stone (colorless benitoite) Sale price¥12,800
Benitoite 1.8mm/0.025ct loose stone (colorless benitoite)

Benitoite 1.8mm/0.025ct loose stone (colorless benitoite) Sale price¥15,800
マダガスカル産ペツォッタイト 0.087ctルース

Pezzottite from Madagascar 0.087ct loose Sale price¥6,980
ピンクダイヤモンド 2.2mm/0.044ctルース(FANCY PURPLE PINK, I-1)

Pink diamond 2.2mm/0.044ct loose (FANCY PURPLE PINK, I-1) Sale price¥39,800
ブラジル産アレキサンドライト 0.074ctルース（ヘマチタ鉱山）

Brazilian Alexandrite 0.074ct Ruth (Hemachita Mine) Sale price¥15,800
ブラジル産アレキサンドライト 0.086ctルース（ヘマチタ鉱山）

Brazilian Alexandrite 0.086ct Ruth (Hemachita Mine) Sale price¥18,800
[On sale June 17th at 10 PM] Canadian Eudialyte 2.4mm/0.052ct Loose Stone with Appraisal

[On sale June 17th at 10 PM] Canadian Eudialyte 2.4mm/0.052ct Loose Stone with Appraisal Sale price¥15,800
Sold out ナイジェリア産コバルトガーナイト 0.095ctルース

[On sale June 7th at 10 PM] Nigerian Cobalt Hauyne Loose Stone, 0.095ct, with AGL certificate
Sold out カシミール産サファイア 0.090ctルース

Kashmir Sapphire 2.5mm/0.090ct Loose Stone GIA

coming soon [Lottery Sale 0531_03] Unheated Kashmir Sapphire 2.7mm/0.090ct Loose GIA

[Lottery Sale 0531_03] Unheated Kashmir Sapphire 2.7mm/0.090ct Loose GIA Sale price¥59,800
Sold out カシミール産非加熱サファイア 0.080ctルース

Kashmir unheated sapphire 2.6mm/0.09ct loose GIA

Sold out Lazulite from Pakistan 2.5mm/0.063ct Loose Gemstone with Certificate

Lazulite from Pakistan 2.5mm/0.063ct Loose Gemstone with Certificate
Sold out ピンクダイヤモンド 0.067ctルース(FANCY INTENSE PURPLE PINK, I-1)

Pink diamond 0.067ct loose (FANCY INTENSE PURPLE PINK, I-1)

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） 0.056ctルース

0.056 ct loose Bekily blue garnet (color-change garnet) from Madagascar

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） 0.089ctルース

Bekily Blue Garnet from Madagascar (color change garnet) 0.089ct loose
Sold out ブラジル産パライバトルマリン 0.071ctルース

Paraiba Tourmaline from Brazil, 0.071ct loose (CuO:0.9% MnO:0.4%)

Sold out Brazilian Lazulite (blue spar) 0.030ct Loose with certificate

Brazilian Lazulite (blue spar) 0.030ct Loose with certificate
Sold out ピンクダイヤモンド 0.073ルース(FANCY DEEP PURPLISH PINK, SI1)

Pink Diamond 0.073 Loose (FANCY DEEP PURPLISH PINK, SI1)
Sold out Pink diamond 0.030ct loose (FANCY PURPLE PINK, SI2)

Pink diamond 0.030ct loose (FANCY PURPLE PINK, SI2)
Sold out Pink diamond 0.070ct loose (FANCY INTENSE PURPLE PINK, I1)

Pink diamond 0.070ct loose (FANCY INTENSE PURPLE PINK, I1)
coming soon Canadian Eudialite 2.5mm/0.051ct Loose Stone with Certificate of Authenticity

Canadian Eudialite 2.5mm/0.051ct Loose Stone with Certificate of Authenticity Sale price¥18,800
Sold out Canadian Eudialyte 2.5mm/0.047ct Loose Stone with Certification

Canadian Eudialyte 2.5mm/0.047ct Loose Stone with Certification
Sold out 0.085ct loose, non-oil red beryl from the United States, GIA

0.085ct loose, non-oil red beryl from the United States, GIA

Sold out Lazulite (0.077ct) from Pakistan, loose

Lazulite (0.077ct) from Pakistan, loose
Sold out 0.092ct loose stone with iolite and phlogopite (phlogopite)

0.092ct loose stone with iolite and phlogopite (phlogopite)

Sold out Tanzanian Kornerupine (with Goethite) 2.6mm/0.068ct Loose

Tanzanian Kornerupine (with Goethite) 2.6mm/0.068ct Loose

Sold out 0.072 ct loose Bekily blue garnet (color-change garnet) from Madagascar

0.072 ct loose Bekily blue garnet (color-change garnet) from Madagascar
Sold out Russian Alexandrite 2.4mm/0.061ct Loose Stone

Russian Alexandrite 2.4mm/0.061ct Loose Stone
Sold out 0.099ct Loose Grandidierite from Madagascar

0.099ct Loose Grandidierite from Madagascar
Sold out U.S. Red Beryl 2.2mm/0.047ct Loose

U.S. Red Beryl 2.2mm/0.047ct Loose
Sold out Canadian rough diamond (sawable) 0.099ct rough with trigon

Canadian rough diamond (sawable) 0.099ct rough with trigon
Sold out American benitoite 0.076ct loose

American benitoite 0.076ct loose

Sold out American benitoite 0.076ct loose

American benitoite 0.076ct loose
Sold out ダイヤモンド 0.096ctルース(D, SI1)

Diamond 0.096ct loose (D, SI1, octagonal cut)
Sold out Paraiba tourmaline from Brazil 0.066ct loose

Paraiba tourmaline from Brazil 0.066ct loose
Sold out Zimbabwean Euclase 2.2mm/0.065ct Loose Stone

Zimbabwean Euclase 2.2mm/0.065ct 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.