¥50,000 - ¥100,000

ダイヤモンド 4.0mm/0.250ctルース(D, VVS1, 3Excellent) GIA

[Lottery Sale 0707_01] Diamond 0.250ct Loose Stone (D, VVS1, 3Excellent) GIA Sale price¥79,800

1.082ct Loose Australian Black Opal with Certification Sale price¥69,800

カメレオンダイヤモンド 4.0mm/0.255ctルース(LIGHT GRAYISH GREEN YELLOW, VS2)

[For xxx only] Chameleon Diamond 0.255ct Loose (LIGHT GRAYISH GREEN YELLOW, VS2) (Listed under 32501581) Sale price¥59,800

ピンクダイヤモンド 0.075ctルース(FANCY PURPLE PINK, SI1)

Pink Diamond 0.075ct Loose (FANCY PURPLE PINK, SI1) Sale price¥79,800

Brown Diamond 0.778 ct Loose (FANCY BROWN, SI1) Sale price¥59,800

American Oregon Sunstone 10.8mm/4.864ct Loose Sale price¥98,000

Sphalerite from Bulgaria 7.0mm/1.790ct Loose Stone Sale price¥59,800

Kochi Prefecture-produced red coral (Boke) 4.485ct loose gemstone Sale price¥98,000

Pt850 ブルーサファイア 0.66ct・ダイヤモンド0.19ctリング鑑別書

[22602646 listed] [Karafuri] Pt850 Blue Sapphire 0.66ct Ring Sale price¥59,800

[Listed as 12562693] Malawi Bicolor Zircon 1.434ct Loose Sale price¥79,800

[Lottery Sale_0612_01] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.542ct Loose Sale price¥55,800

【Carat Fleur】 K18 Sliced Diamond and Yellow Sapphire Earrings with Certificate Sale price¥55,800

Pt900 ブラックオパール 0.58ct ペンダントトップ（ネックレストップ）鑑別書

【Colorfleur】Pt900 Black Opal 0.58ct Pendant Top with Authenticity Card Sale price¥55,800

Pt900 ブラックオパール 0.66ct ペンダントトップ（ネックレストップ）鑑別書

[COLORFUL] Pt900 Black Opal 0.66ct Pendant Top (Necklace Top) with Identification Card Sale price¥55,800

Brazilian Paraiba Tourmaline 2.9mm/0.090ct Loose (CuO:1.7% MnO:1.4%) Sale price¥69,800

Paraiba tourmaline from Brazil 0.086ct loose Sale price¥79,800

Tanzanian Mahenge Spinel (Pink Spinel) 0.566ct Loose Stone with Certification Sale price¥55,800

Madagascar Padparadscha Sapphire 4.5mm/0.416ct Loose Gemstone, Central Gemology Laboratory certified Sale price¥98,000

[Listed on 22602645] [Colorful] Pt900 Ruby 0.6ct Ring Sale price¥98,000

Pt950 ムーンストーンキャッツアイ 3ct ・ムーンストーンキャッツアイリング鑑別書

[Listed as 22602642][Colorful] Pt950 Moonstone Cat's Eye 3ct Ring Sale price¥79,800

Pt900 ブルーサファイア 0.43ct・ダイヤモンド0.44ctリング鑑別書

[Item ID: 22602630] [Karafuri] Pt900 Blue Sapphire 0.43ct Ring Sale price¥98,000

Pt900グロッシュラーガーネット 1.38ct・ダイヤモンド0.13ctリング鑑別書

【Karahuri】Pt900 Grossular Garnet 1.38ct Diamond 0.13ct Ring with Appraisal Report Sale price¥98,000

Australian black opal 3.242ct loose stone Sale price¥59,800

Pt950 アレキサンドライト 0.08ct・ダイヤモンド0.25ctリング鑑別カード

[COLORFUL] Pt950 Alexandrite 0.08ct Diamond 0.25ct Ring with Appraisal Card Sale price¥98,000

Unheated Ruby, 0.207 ct, Loose Stone, Hōki Kyō Sale price¥69,800

Bolivian Ametrine 36.887ct loose stone Sale price¥79,800

Sri Lankan cobalt spinel 0.281ct loose stone Sale price¥55,800

Unheated Brazilian Paraiba Tourmaline 0.069ct loose stone (CuO: 2.1%, MnO: 2.1%) Sale price¥65,800

Namibian Jeremejevite 0.501ct loose stone (bicolor) Sale price¥89,800

Namibian Green Tourmaline 7.0mm/1.206ct Loose Stone (Lagoon Tourmaline) Sale price¥59,800

Unheated Brazilian Paraiba Tourmaline 0.081ct loose stone (CuO: 2.1%, MnO: 2.3%) Sale price¥75,800

Chameleon Diamond Green Diamond 0.122ct Loose (FANCY GRAY GREEN, SI2) Sale price¥69,800

Zimbabwean rough green diamond (sawable) 0.228ct rough (trigon) Sale price¥79,800

Mozambique Elbaites Tourmaline / Pink Tourmaline 1.126ct Loose (CuO: 0.2%, MnO: 2.4%) Sale price¥55,800

[12552038] Beryl Cat's Eye 32.703ct Loose Stone Sale price¥98,000

【COLORFLE】Pt900/K18 Diamond 0.22ct Ring with Certificate Sale price¥98,000

Pt900 ブルーサファイア 1.05ct・ダイヤモンド0.05ctリング鑑別書

[Colorfuri] Pt900 Blue Sapphire 1.05ct/Diamond 0.05ct Ring with Appraisal Report Sale price¥98,000

Colombian Trapiche Emerald, 1.874ct Loose Stone with Certification Sale price¥69,800

Pyrite in emerald from Chivor Mine, Colombia, 4.221 ct, loose Sale price¥98,000

ピンクダイヤモンド 0.030ctルース(FANCY PURPLISH PINK, SI-1)

Pink Diamond 1.95mm/0.030ct Loose Stone (FANCY PURPLISH PINK, SI-1) Central Gem Lab Sale price¥59,800

インターナリーフローレスダイヤモンド 0.320ctルース(G, IF, 3Excellent)

Internally Flawless Diamond 4.4mm/0.320ct Loose (G, IF, 3Excellent) GIA Sale price¥89,800

Loose 1.833ct Blue Zircon from Malawi (Malawi Zircon) Sale price¥98,000

K18WG クロムトルマリン 0.70ctct・サファイア0.30ctペンダントトップ（ネックレストップ）鑑別書

[Colorful] K18WG Chrome Tourmaline 0.70ct and Sapphire 0.30ct Pendant Top (Necklace Top) with Appraisal Report Sale price¥79,800

[ColorFuli] K18WG Zircon Pendant Top (Necklace Top) with Certificate of Authenticity Sale price¥59,800

Paraiba Tourmaline from Brazil, 0.063 ct, loose (CuO: 1.8%, MnO: 2.4%) Sale price¥55,800

Bicolor tourmaline 4.448ct loose stone Sale price¥55,800

Spanish Sphalerite 4.445 ct Loose Sale price¥79,800

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'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.