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Sold out 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） 0.922ctルース

Rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture 0.922ct loose
Sold out 【甲州貴石切子plusthree】モルダバイト 1.511ctルース ワッペン付

[Koshu precious stone Kiriko plusthree] Moldavite 1.511ct loose with patch
Sold out Maushitsit (Mawsissi) from Myanmar 1 stone loose (12mm)《Multiple purchase discount available》

Maushitsit (Mawsissi) from Myanmar 1 stone loose (12mm)《Multiple purchase discount available》
Sold out Tanzanian Bicolor Tanzanite 0.419 ct Loose Stone

Tanzanian Bicolor Tanzanite 0.419 ct Loose Stone
Sold out Synthetic Cobalt Spinel 0.466ct Loose

Synthetic Cobalt Spinel 0.466ct Loose
Sold out Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available]

Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available]
Sold out パキスタン産ラズライト（天藍石） 0.103ctルース 鑑別書

Lazurite (Lapis Lazuli) from Pakistan, 0.103ct Loose Stone, with Gemological Report
Sold out Lazulite from Pakistan 2.5mm/0.063ct Loose Gemstone with Certificate

Lazulite from Pakistan 2.5mm/0.063ct Loose Gemstone with Certificate
Sold out 【12562579掲載】ナミビア産ジェレメジェバイト 0.355ctルース

Jeremejevite from Namibia 0.355ct Loose Stone with Certification
Sold out 【12562829掲載】コロンビア産パイライト付ユークレース 23.430ct原石

Euclase with pyrite from Colombia 23.430ct Rough, Hōki Kyōso
Sold out 【12562820掲載】ブラジル産バイカラートルマリン 7.445ctルース

Brazilian bicolor tourmaline 7.445ct loose stone
Sold out Colombian mica in emerald 1.314ct loose

Colombian mica in emerald 1.314ct loose
Sold out 【Sales start April 18th, 10 PM JST】《Limited to 5 pieces》Midway Atoll Coral Branch (Rough), 1 piece (March Birthstone, Coral, average 26ct)《Bulk purchase discount available》

【Sales start April 18th, 10 PM JST】《Limited to 5 pieces》Midway Atoll Coral Branch (Rough), 1 piece (March Birthstone, Coral, average 26ct)《Bulk purchase discount available》
Sold out Midway coral branch (raw wood) 1 piece (March birthstone, coral, average 26ct, Midway coral) 《Multiple purchase discount available》

Midway coral branch (raw wood) 1 piece (March birthstone, coral, average 26ct, Midway coral) 《Multiple purchase discount available》
Sold out [On Sale April 18th, 10 PM JST] [Limited 9 Stones] Tosa Blood Coral Branch (Raw Coral) 1 Stone (March Birthstone, Coral, Average 7ct) [Bulk Purchase Discount Available]

[On Sale April 18th, 10 PM JST] [Limited 9 Stones] Tosa Blood Coral Branch (Raw Coral) 1 Stone (March Birthstone, Coral, Average 7ct) [Bulk Purchase Discount Available]
Sold out 《Limited to 10 Gems》Koshu Kiseki Kiriko plusthree "Akatsuki" Ametrine Gem Gacha《Bulk Purchase Discount Available》

《Limited to 10 Gems》Koshu Kiseki Kiriko plusthree "Akatsuki" Ametrine Gem Gacha《Bulk Purchase Discount Available》
Sold out 《Limited to 2 Stones》Indian Cavansite Crystal 1 Stone (average 7.2ct) 《Bulk Purchase Discount Available》

《Limited to 2 Stones》Indian Cavansite Crystal 1 Stone (average 7.2ct) 《Bulk Purchase Discount Available》
Sold out "Limited to 9" Deep sea coral loose stone (March birthstone, coral, 7mm) "Multiple purchase discount available"

"Limited to 9" Deep sea coral loose stone (March birthstone, coral, 7mm) "Multiple purchase discount available"
Sold out Pt900 カンテラオパール 7.809ctct リング

【Karafuri】Pt900 Cantera Opal 7.809ct and Diamond 0.19ct Pendant Top
Sold out 【32501879掲載】グレーダイヤモンド 0.096ctルース(VERY LIGHT GRAY, SI-1)

Gray Diamond, 2.9mm/0.096ct Loose (VERY LIGHT GRAY, SI-1)
Sold out 【32501878掲載】グレーダイヤモンド 0.109ctルース(VERY LIGHT GRAY, SI-1)

Gray Diamond 3.0mm/0.109ct Loose (VERY LIGHT GRAY, SI-1)
Sold out カメレオンダイヤモンド 0.153ctルース(LIGHT GRAY GREEN, SI-1)

Chameleon Diamond 0.153ct Loose (LIGHT GRAY GREEN, SI-1)
Sold out カメレオンダイヤモンド 0.128ctルース(FANCY LIGHT GRAY GREEN, SI-1)

Chameleon Diamond 3.2mm/0.128ct Loose (FANCY LIGHT GRAY GREEN, SI-1)
Sold out カメレオンダイヤモンド 0.118ctルース(LIGHT GRAYISH GREENISH YELLOW, VS-2)

Chameleon Diamond 3.1mm/0.118ct Loose Stone (LIGHT GRAYISH GREENISH YELLOW, VS-2)
Sold out 【12562810掲載】メキシコ産カンテラオパール 8.097ctルース

Mexican Cantera Opal 8.097ct Loose
Sold out メキシコ産カンテラオパール 5.410ctルース

Mexican Cantera Opal 5.410 ct Loose Stone
Sold out メキシコ産カンテラオパール 2.096ctルース

Mexican Cantera Opal 2.096ct Loose Stone
Sold out 中国・湖南省シンシャ（辰砂・シナバー） 0.935ctルース

[12562802 posted] Chinese Cinnabar (Shansha) 0.935 ct Loose
Sold out タンザニア産ホットピンクスピネル 0.204ctルース

Hot Pink Spinel from Tanzania, 0.204 ct, Loose Stone with Identification Report
Sold out ブラジル産インディゴライトトルマリン 0.105ctルース

Brazil Indicolite Tourmaline 0.105ct Loose Stone with Gemstone Report
Sold out メキシコ産ウォーターオパール 1.018ctルース

[Published 12562689] Mexican Water Opal 1.018ct Loose Stone
Sold out ドイツ産アウイナイト 0.122ctルース

German Hauyne 0.122ct Loose Gemstone
Sold out 【12561981掲載】アメリカ産オレゴンサンストーン 1.893ctルース

Oregon Sunstone from the USA, 8.1mm/1.893ct, loose
Sold out 【Sale starts 4/ at 10 PM JST】《Limited to 15 pieces》Tucson Gem Gacha 💎 Benitoite, Italian Leucite, Pakistani Lazulite, etc. 《Multi-item discount available》

【Sale starts 4/ at 10 PM JST】《Limited to 15 pieces》Tucson Gem Gacha 💎 Benitoite, Italian Leucite, Pakistani Lazulite, etc. 《Multi-item discount available》
Sold out 【4/20 22時販売】シーライト 2.737ctルース - カラッツSTORE

Sealyite from California, USA, 2.737ct loose stone, with identification certificate
Sold out 【22602555掲載】K18 ターコイズ リング

K18 Turquoise Ring
Sold out K18 Red Coral from Kochi Prefecture (0.41ct), Diamond (0.03ct) Ring

K18 Red Coral from Kochi Prefecture (0.41ct), Diamond (0.03ct) Ring
Sold out 【22602551掲載】K18 血赤珊瑚 0.56ct リング

K18 Blood Coral from Kochi Prefecture (0.56ct), Diamond (0.08ct) Ring
Sold out 【32501804掲載】ダイヤモンド 0.185ctルース(I, SI1)

Diamond 0.185ct Loose Stone (I, SI1, Ashoka Cut)
Sold out Brazilian alexandrite 0.109ct loose

Brazilian alexandrite 0.109ct loose
Sold out Brazilian Alexandrite 2.7mm/0.105ct Loose Stone

Brazilian Alexandrite 2.7mm/0.105ct Loose Stone
Sold out 《Limited to 12 Stones》Iolite Gacha including Konpeito-cut Golden Iolite, normally 27,800 yen (with a bonus cut by Mr. Sanje)《Multiple Purchase Discount Available》

《Limited to 12 Stones》Iolite Gacha including Konpeito-cut Golden Iolite, normally 27,800 yen (with a bonus cut by Mr. Sanje)《Multiple Purchase Discount Available》
Sold out 【12561280掲載】ブラジル産レインボースキャポライト 0.393ctルース

Brazilian Rainbow Scapolite 0.393ct Loose Stone
Sold out メキシコ産オパール 0.244ctルース

Mexican Fire Opal 0.244ct Loose Stone (Contraluz Opal)
Sold out スリランカ産ブルーサファイア 0.826ctルース

Sri Lankan Blue Sapphire 5.5mm/0.826ct Loose Stone
Sold out Loose 0.264ct Sri Lankan Blue Sapphire

Loose 0.264ct Sri Lankan Blue Sapphire
Sold out Tanzanian Rhodolite Garnet 0.410 ct Loose Stone

Tanzanian Rhodolite Garnet 0.410 ct Loose Stone
Sold out 0.133ct Loose Blue Sapphire from Madagascar

0.133ct Loose Blue Sapphire from Madagascar

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.