Width: 3.1 - 4.0mm

American red beryl 0.184ct loose Sale price¥46,800

Tanzanian Kornerupine Cat's Eye 0.725ct Loose Stone Sale price¥4,980

Cambodian blue zircon 0.258ct loose Sale price¥6,980

Pink spinel 3.8mm/0.192ct loose Sale price¥5,980

Montana Sapphire 0.458ct Loose (Bi-Color Sapphire) Sale price¥14,800

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[On Sale at 10 PM on October 25th] Indian Iolite Sunstone 0.331ct Loose

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[On Sale at 10 PM on October 25th] Chinese Cinnabar 0.923ct Loose Stone with Certificate of Authenticity

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[On Sale at 10 PM on October 25th] Chinese Cinnabar 0.866ct Loose Stone with Certificate of Authenticity

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[10/12 22:00 Sale] Brazilian Unheated Pink Imperial Topaz (Sherry Pink) 0.231ct Loose

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[On Sale at 10pm on October 5th] Russian Alexandrite 0.333ct Loose Stone

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[On Sale at 10 PM on October 5th] Zimbabwean Bicolor Euclase 0.352ct Loose Stone

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ダイヤモンド（H&C） 3.8mm/0.208ctルース(G, IF, 3Excellent H&C)

Lottery Sale ① [Reserved for Winners] [Listed on 32501711] Internally Flawless Diamond (H&C) 3.8mm/0.208ct Loose (G, IF, 3 Excellent H&C) by Chuho

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[On Sale at 10 PM on September 17th] 0.244ct Loose Blue Sapphire from Madagascar

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Unheated Pigeon Blood Ruby 0.300ct Loose

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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） 0.321ctルース

[10/11 22:00] Rainbow Garnet from Tenkawa Village, Nara Prefecture, 3.9mm/0.321ct Loose Stone (Rose Cut)

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[On Sale at 10 PM on September 27th] Chinese Cinnabar 0.779ct Loose Stone with Certificate of Authenticity

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[On Sale at 10 PM on September 13th] Chinese Cinnabar 0.506ct Loose Stone with Certificate of Authenticity

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[On Sale at 10 PM on September 19th] Chinese Cinnabar 0.468ct Loose Stone with Certificate of Authenticity

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ブラジル産パライバトルマリン 3.3mm/0.155ctルース（CuO:1.7%、MnO:1.6%）

Brazilian Paraiba tourmaline 3.3mm/0.155ct loose stone (CuO: 1.7%, MnO: 1.6%)

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[Sold at 10 PM on September 7th] Tanzanian Magnesioaxinite 0.357ct Loose Stone, Japan-Germany Qualification

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[On Sale at 10 PM on September 6th] Dominican Republic Conch Pearl (with Flame Pattern) 0.210ct Loose (Flamingo Color)

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[On Sale at 10 PM on September 6th] Pakistani Lazurite (Azurite) 3.5mm/0.165ct Loose Stone

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[Available at 10 PM on August 24th] Sri Lankan Star Ruby 0.496ct Loose Stone with Certificate of Authenticity

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[12560245] Green Zoisite 0.224ct Loose Stone

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[12560254] Zambian emerald 0.171ct loose stone

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[Available at 10 PM on August 23rd] Unheated Ruby 0.680ct Loose Stone with Certificate of Authenticity

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[On Sale at 10 PM on August 16th] Unheated Padparadscha Sapphire 3.9mm/0.290ct Loose GIA

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ピンクダイヤモンド 3.0mm/0.110ctルース(FANCY INTENSE PINK, SI2)

[Available at 10 PM on August 12th] Pink Diamond 3.0mm/0.110ct Loose (FANCY INTENSE PINK, SI2)

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[On sale from 10pm on August 21st] Zimbabwean sphene 0.356ct loose stone

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[On sale at 10pm on August 9th] Zimbabwean sphene 0.354ct loose stone

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[On Sale at 10 PM on August 9th] Zimbabwean Sphene 4.0mm/0.287ct Loose Stone

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[On Sale at 10 PM on August 21st] Mexican Opal (Faceted) 0.187ct Loose

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[Available at 10 PM on August 7th] Tanzanian Purple Zoisite 3.9mm/0.255ct Loose Stone with Certificate of Authenticity

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[Available at 10 PM on August 7th] Sri Lankan saffron 0.268ct loose stone with certificate of authenticity

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Sri Lankan Star Ruby 0.398ct Loose Stone with Certificate of Authenticity

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[On Sale at 10 PM on August 2nd] Madagascar Sapphire 0.344ct Loose

coming soon

Bolivian Phosphophyllite 0.445ct Loose Stone with Certificate of Authenticity Sale price¥298,000

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[On Sale at 10 PM on August 9th] Brazilian Aquamarine 0.237ct Loose Stone

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[8/15 22:00 Sale] Brazilian Aquamarine 0.300ct Loose Stone

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[On Sale at 10 PM on August 17th] Tanzanian Color Change Garnet 0.563ct Loose Stone

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Sri Lankan Star Sapphire 0.533ct Loose

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Afghanistan Lazurite in Sodalite 0.195ct Loose Stone

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Sri Lankan saffron 0.261ct loose stone with certificate

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Sri Lankan Yellow Sapphire 0.481ct Loose

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Indonesian Parasitic Peridot Cat's Eye 0.489ct Loose Stone

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Brazilian Aquamarine 0.203ct Loose Stone

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Cassiterite 3.5mm/0.420ct Loose Stone with Certificate of Authenticity

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Indonesian Parasite Peridot (Parasitetic Peridot) 0.191ct 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.