Ruth

[Sale on 7/1 at 10 PM] Tanzanian Pink Spinel 3.9mm/0.246ct Loose Stone with Certification Sale price¥35,800

[On sale July 1st, 10 PM JST] Brazilian Dioptase 0.956ct Loose Stone with Certificate Sale price¥23,800

[On Sale July 10th, 10 PM] Tanzanian Zircon 1.841ct Loose Gemstone with Certificate Sale price¥18,800

[On sale July 10th at 10 PM] Zimbabwe Eucrase 0.138ct Loose Gemstone with Certificate Sale price¥29,800

[Sales start July 6, 10 PM] Bicolor Euclase from Zimbabwe 0.118ct Loose Gemstone with Certificate Sale price¥25,800

[On sale June 23 at 10 PM] Untreated Ruby 0.207ct Loose Stone (Houseki Kyo certificate) Sale price¥69,800

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） 0.582ctルース

[On sale June 21st at 10 PM] Madagascar Andesine-Labradorite (commonly known as Rainbow Moonstone) 0.582ct Loose Stone Sale price¥6,980

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） 1.440ctルース

[On sale June 21, 10 PM JST] Madagascar Andesine-Labradorite (commonly known as Rainbow Moonstone) 1.440ct Loose Gemstone Sale price¥25,800

Zimbabwean Blue Apatite (UV Type) 0.650ct Loose Sale price¥9,800

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

YAG (Yttrium Aluminum Garnet) 3.9mm/0.317ct loose stone Sale price¥6,980

YAG (Yttrium Aluminum Garnet) 4.9mm/0.574ct loose stone Sale price¥8,800

Synthetic rutile 0.942ct loose stone Sale price¥14,800

Synthetic Opal 1.804ct Loose Sale price¥12,800

YAG (Yttrium Aluminum Garnet) 4.1mm/0.346ct Loose Stone (Rose Cut) Sale price¥8,800

YAG (Yttrium Aluminum Garnet) 3.3mm/0.208ct Loose Stone (Rose Cut) Sale price¥5,980

Mexican Fire Opal 0.718ct Loose Sale price¥9,800

Mexican Fire Opal 0.593ct Loose (Faceted Cut) Sale price¥9,800

Brazilian Amethyst 9.749ct Loose Stone Sale price¥12,800

Nigerian bicolor tourmaline 0.379ct loose stone Sale price¥6,980

Tanzanian green sapphire 0.303ct loose stone Sale price¥8,800

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

Colombian mint color emerald 0.297ct loose stone Sale price¥8,800

[Updated 12552163] Benitoite 0.099ct loose stone Sale price¥29,800

モザンビーク産パライバトルマリン 0.784ctルース（CuO:0.3%,MnO:1.3%）

[12550887] Paraiba Tourmaline from Mozambique 0.784ct loose stone Sale price¥128,000

Pakistani Oil in Quartz 0.438ct Loose Stone Sale price¥6,980

Madagascar sapphire 0.448ct loose stone Sale price¥15,800

【On Sale 6/25 10 PM JST】Euclase from Zimbabwe 0.070 ct Loose Stone with Certificate Sale price¥16,800

[Sale on June 25th at 10 PM] Zimbabwe Euclase 0.067ct Loose Stone with Certification Sale price¥15,800

[Sale on 6/25 at 10 PM] US Scheelite 2.666ct Loose Gemstone with Certificate Sale price¥15,800

[Sales start June 25th at 10 PM JST] American Scheelite 1.943ct Loose Stone with Certificate Sale price¥12,800

[Sale begins June 26th, 10 PM JST] Sri Lankan Silky Sapphire 5.1mm/0.488ct Loose Rose Cut Gemstone Sale price¥7,980

[Sale Date: June 26th, 10 PM JST] Brazilian Medusa Quartz (Paraiba Quartz) 5.4mm/0.479ct Loose Stone (Rose Cut) Sale price¥12,800

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） 0.807ctルース

[On sale June 26th, 10 PM JST] Madagascar Andesine-Labradorite (Common name: Rainbow Moonstone) 0.807ct Loose Sale price¥8,800

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） 0.619ctルース

[On sale June 21st at 10 PM] Madagascar Andesine-Labradorite (commonly known as Rainbow Moonstone) 0.619ct Loose Stone Sale price¥6,980

[On sale June 22nd at 10 PM JST] Madagascar Canary Yellow Chrysoberyl 0.650ct Loose Stone with Appraisal Sale price¥18,800

[On sale June 26th at 10 PM] Madagascar Canary Yellow Chrysoberyl 0.569ct Loose Gemstone with Certificate Sale price¥9,800

[On Sale June 23rd at 10 PM] Myanmar Black Spinel 3.061ct Loose Stone with Gemstone Identification Report Sale price¥15,800

[Sale on June 21 at 10 PM] Jeremejevite from Namibia 0.139ct Loose Stone with Certification Sale price¥29,800

[Sale on June 25th at 10 PM] Jeremejevite from Namibia, 0.095ct loose stone, with鑑別書 Sale price¥24,800

[On sale June 21, 10 PM] Jeremejevite 0.089ct Loose Stone from Namibia with certificate Sale price¥25,800

[On Sale June 24 at 10 PM] Zimbabwe Euclase 0.183 ct Loose Stone with Certificate Sale price¥35,800

[On Sale June 26th at 10 PM] Zimbabwean Euclase 3.4mm/0.206ct Loose Gemstone with Certification Sale price¥29,800

Diamond (cabochon cut) 0.206ct loose Sale price¥45,800

Brazilian alexandrite 0.116ct loose Sale price¥15,800

Australian Rainbow Lattice Sunstone 1.746ct Loose Stone Sale price¥12,800

Brazilian Paraiba Tourmaline 0.052ct Loose Stone (CuO:2.0%, MnO:2.2%) Sale price¥35,800

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

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.