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Sold out Pigeon's Blood Ruby 4.0mm/0.230ct Loose AIGS

Pigeon's Blood Ruby 4.0mm/0.230ct Loose AIGS
Sold out パパラチアサファイア 0.191ctルース

Padparadscha sapphire 0.191ct loose stone

Sold out Afghanistan Lapis Lazuli 11mm/5.263ct Loose Stone

Afghanistan Lapis Lazuli 11mm/5.263ct Loose Stone
Sold out [Sakura In-Cut] Sapphire from Ratnapura, Sri Lanka, 6.0mm/0.839ct Loose

[Sakura In-Cut] Sapphire from Ratnapura, Sri Lanka, 6.0mm/0.839ct Loose
Sold out Unmounted American Anthill Garnet, 4.0mm/0.269ct

Unmounted American Anthill Garnet, 4.0mm/0.269ct
Sold out American Anthill Garnet 5.0mm/0.641ct Loose

American Anthill Garnet 5.0mm/0.641ct Loose
Sold out USA Ant Hill Garnet 4.0mm/0.277ct Loose Stone

USA Ant Hill Garnet 4.0mm/0.277ct Loose Stone
Sold out Mexican Water Opal 4.8mm/0.289ct Loose

Mexican Water Opal 4.8mm/0.289ct Loose
Sold out [Sakura In-Cut] Tanzanite from Tanzania 6.0mm/0.774ct Loose Stone

[Sakura In-Cut] Tanzanite from Tanzania 6.0mm/0.774ct Loose Stone
Sold out Afghanistan Blue Tourmaline 4.0mm/0.268ct Loose Stone (Lagoon Tourmaline)

Afghanistan Blue Tourmaline 4.0mm/0.268ct Loose Stone (Lagoon Tourmaline)
Sold out Cornflower Blue Sapphire 4.5mm/0.430ct Loose Stone AIGS

Cornflower Blue Sapphire 4.5mm/0.430ct Loose Stone AIGS
Sold out Zimbabwean Euclase 2.2mm/0.065ct Loose Stone

Zimbabwean Euclase 2.2mm/0.065ct Loose Stone
Sold out German Apatite 3.1mm/0.100ct Loose Stone

German Apatite 3.1mm/0.100ct Loose Stone

Sold out [On Sale at 10 PM on December 7th] Rainbow Garnet (Andradite Garnet) 5.4mm/0.771ct Loose Stone from Tenkawa Village, Nara Prefecture

[On Sale at 10 PM on December 7th] Rainbow Garnet (Andradite Garnet) 5.4mm/0.771ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out Tanzanian Kornerupine 2.7mm/0.075ct Loose Stone

Tanzanian Kornerupine 2.7mm/0.075ct Loose Stone

Sold out Colombian emerald 3.0mm/0.098ct loose stone

Colombian emerald 3.0mm/0.098ct loose stone
Sold out [12/5 22:00] Russian Phenakite 6.6mm/1.058ct Loose Stone

[12/5 22:00] Russian Phenakite 6.6mm/1.058ct Loose Stone
Sold out White Diamond 6.2mm/0.988ct Loose (FANCY WHITE, I2)

White Diamond 6.2mm/0.988ct Loose (FANCY WHITE, I2)

Sold out [Sakura In-Cut] Tibetan Andesine 8.0mm/1.366ct Loose Stone

[Sakura In-Cut] Tibetan Andesine 8.0mm/1.366ct Loose Stone

Sold out [Sakura In-Cut] Tibetan Andesine 6.0mm/0.631ct Loose Stone

[Sakura In-Cut] Tibetan Andesine 6.0mm/0.631ct Loose Stone

Sold out [Dandelion Cut] Madagascar Sphene 0.950ct Loose Stone

[Dandelion Cut] Madagascar Sphene 0.950ct Loose Stone

Sold out [Dandelion Cut] Madagascar Sphene 6.0mm/0.775ct Loose Stone

[Dandelion Cut] Madagascar Sphene 6.0mm/0.775ct Loose Stone

Sold out [Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.685ct Loose

[Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.685ct Loose
Sold out [Sakura In-Cut] Mali Garnet (Grossular/Andradite Garnet) from the Republic of Mali, 6.0mm/0.920ct Loose Stone with Certificate of Authenticity

[Sakura In-Cut] Mali Garnet (Grossular/Andradite Garnet) from the Republic of Mali, 6.0mm/0.920ct Loose Stone with Certificate of Authenticity

coming soon 【Lottery Sale_0612_04】【Dandelion Cut】Mali Garnet (Grossular/Andradite Garnet) from Mali 6.0mm/1.018ct Loose Stone with Certificate

【Lottery Sale_0612_04】【Dandelion Cut】Mali Garnet (Grossular/Andradite Garnet) from Mali 6.0mm/1.018ct Loose Stone with Certificate Sale price¥49,800
Sold out Rainbow Garnet (Andradite Garnet) 7.0mm/2.135ct Loose Stone from Tenkawa Village, Nara Prefecture

Rainbow Garnet (Andradite Garnet) 7.0mm/2.135ct Loose Stone from Tenkawa Village, Nara Prefecture
Sold out Madagascar Bicolor Sapphire 5.8mm/1.006ct Loose

Madagascar Bicolor Sapphire 5.8mm/1.006ct Loose
Sold out Madagascar Bicolor Sapphire 4.5mm/0.637ct Loose

Madagascar Bicolor Sapphire 4.5mm/0.637ct Loose
Sold out Madagascar Sapphire 4.6mm/0.472ct Loose

Madagascar Sapphire 4.6mm/0.472ct Loose
Sold out Madagascar Bicolor Sapphire 3.6mm/0.232ct Loose

Madagascar Bicolor Sapphire 3.6mm/0.232ct Loose
Sold out Internally Flawless Diamond (H&C) 3.8mm/0.210ct Loose (F, IF, 3 Excellent H&C) GIA & Chuho

Internally Flawless Diamond (H&C) 3.8mm/0.210ct Loose (F, IF, 3 Excellent H&C) GIA & Chuho
Sold out 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

[Sale Date: 12/5 10 PM] Internally Flawless Diamond (H&C) 4.45mm/0.305ct Loose (F, IF, 3 Excellent H&C)
Sold out 【さくらインカット】マダガスカル産アパタイト 7.9mm/1.537ct《コラボ》ルース ワッペン

[Sakura In-Cut] Madagascar Green Apatite 7.9mm/1.537ct "Collaboration" Loose Stone Patch
Sold out Tanzanian Almandine Garnet 6.4mm/1.271ct Loose Stone

Tanzanian Almandine Garnet 6.4mm/1.271ct Loose Stone
Sold out アメリカ産ノンオイルレッドベリル 2.5mm/0.050ctルース GIA

American oil-free red beryl 2.5mm/0.050ct loose GIA

Sold out GGG（ガドリウムガリウムガーネット） 6.4mm/2.380ctルース

GGG (Gadolium Gallium Garnet) 6.4mm/2.380ct Loose Stone
Sold out American Red Beryl 2.2mm/0.049ct Loose Stone

American Red Beryl 2.2mm/0.049ct Loose Stone
Sold out アメリカ産レッドベリル 0.045ctルース

American Red Beryl 2.1mm/0.045ct Loose Stone

Sold out American Red Beryl 2.0mm/0.032ct Loose Stone

American Red Beryl 2.0mm/0.032ct Loose Stone
Sold out ロシア産デマントイドガーネット（ホーステール認む） 0.162ctルース

Russian Demantoid Garnet (Horsetail) 3.3mm/0.162ct Loose Stone
Sold out ブルーダイヤモンド 2.3mm/0.056ctルース(LIGHT GREEN BLUE, SI-1)

Blue Diamond 2.3mm/0.056ct Loose (Light Green Blue, SI-1)

Sold out パキスタン産ペリドット 5.0mm/0.517ctルース

Pakistani Peridot 5.0mm/0.517ct Loose Stone
Sold out 加熱ルビー 4.5mm/0.430ctルース GIT

Unheated Ruby 4.5mm/0.430ct Loose GIT
Sold out メキシコ産ファイアオパール（ファセットカット） 5.0mm/0.309ctルース

Mexican Fire Opal (Faceted) 5.0mm/0.309ct Loose Stone
Sold out アメリカ産オレゴンサンストーン 6.0mm/0.754ctルース

Oregon Sunstone from the United States, 6.0mm/0.754ct loose stone
Sold out ブラジル産ルベライト 5.4mm/0.595ctルース

Brazilian Rubellite 5.4mm/0.595ct Loose Stone
Sold out タンザナイト 1.747ctルース

Tanzanite from Tanzania 7.4mm/1.747ct loose stone
Sold out ブラウンダイヤモンド 3.2mm/0.132ctルース（VSクラス相当）

Brown diamond 0.132ct 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.