Vertical: 4.1 - 5.0mm

Aventurine aquamarine 0.288ct loose Sale price¥6,980

Purple spinel 0.380ct loose Sale price¥8,800

Purple Spinel 4.3mm/0.323ct Loose Stone Sale price¥8,800

Violet spinel 0.301ct loose Sale price¥9,800

Tanzania Zoisite 0.278ct loose stone Sale price¥8,800

Zoisite 0.216ct loose stone (heart shape) Sale price¥8,800

Zoisite 0.247ct loose stone (heart shape) Sale price¥8,800

Blue Garnite from Nigeria 0.514ct Ruth Japanese-German Edition Sale price¥59,800

Australian rainbow lattice sunstone 0.378ct loose Sale price¥5,980

Australian rainbow lattice sunstone 0.354ct loose Sale price¥5,980

Russian demantoid garnet (horsetail recognized) 0.141ct loose Sale price¥39,800

Yellow sapphire 0.445ct loose Sale price¥8,800

Yellow sapphire 0.294ct loose Sale price¥8,800

Montana Sapphire 0.254ct loose Sale price¥9,800

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

Cambodian blue zircon 0.197ct loose Sale price¥5,980

Cambodian blue zircon 0.169ct loose Sale price¥5,980

Purple Spinel 4.8mm/0.422ct Loose Stone Sale price¥6,980

Purple spinel 4.5mm/0.365ct loose Sale price¥4,980

Pink spinel 4.3mm/0.342ct loose Sale price¥6,980

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[On Sale at 10 PM on October 29th] Brazilian Lazurite in Quartz 4.5mm/0.283ct Loose Stone

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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） 0.201ctルース

[On Sale at 10 PM on October 22nd] Brazilian Unheated Pink Imperial Topaz (Sherry Pink) 0.201ct Loose

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[On Sale at 10 PM on October 22nd] Indian Iolite Sunstone 4.2mm/0.246ct Loose Stone

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[On Sale at 10 PM on 10/26] Chinese Cinnabar 1.171ct Loose Stone (Faceted) with Certificate of Authenticity

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[On Sale at 10pm on 10/26] Chinese Cinnabar 1.035ct Loose Stone

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

coming soon

インターナリーフローレスダイヤモンド（H&C） 4.45mm/0.305ctルース(F, IF, 3Excellent H&C) GIA&中宝

[On Sale 10/12 at 10 PM] Internally Flawless Diamond (H&C) 4.45mm/0.305ct Loose (F, IF, 3 Excellent H&C) Sale price¥98,000

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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） 0.577ctルース

[On Sale at 10 PM on October 18th] Rainbow Garnet (Andradite Garnet) 0.577ct Loose Stone from Tenkawa Village, Nara Prefecture

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[10/11 22:00 Sale] Madagascar Blue Sapphire 0.338ct Loose

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Unheated Pigeon Blood Ruby 0.300ct Loose

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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 0.644ct 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 21st] Chinese Cinnabar 0.486ct Loose Stone with Certificate of Authenticity

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[On Sale at 10 PM on September 27th] Chinese Cinnabar 0.480ct Loose Stone with Certificate of Authenticity

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[September 19th at 10pm] Tanzanian Rhodolite Garnet 0.528ct Loose Stone, Japan-Germany Qualification

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

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[Sold at 10 PM on September 6th] Tanzanian Magnesioaxinite 0.188ct Loose Stone, Japan-Germany Qualification

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[On Sale at 10 PM on September 5th] Brazilian Mint Emerald 0.281ct Loose

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[On Sale at 10 PM on September 3rd] Madagascar Blue Sapphire 4.7mm/0.522ct Loose

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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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Sri Lankan Moonstone 0.298ct Loose (Blue Moonstone) with Certificate of Authenticity

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[12560245] Green Zoisite 0.224ct Loose Stone

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[Available at 10 PM on August 24th] Colombian Mint Emerald 4.1mm/0.244ct Loose Stone

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[On sale at 10pm on August 25th] Zambian emerald 0.166ct 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 September 7th] Madagascar Padparadscha Sapphire 3.5mm/0.228ct Loose

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Sri Lankan White Sapphire 4.3mm/0.382ct Loose

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.