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Sold out 【12562005掲載】スペイン産スファレライト 0.878ctルース

Spanish Sphalerite 5.5mm/0.878ct Loose
Sold out 【12562007掲載】スペイン産スファレライト 0.920ctルース

Spanish Sphalerite 5.6mm/0.920ct Loose Stone
Sold out 【12562009掲載】スペイン産スファレライト 1.475ctルース

Spanish Sphalerite 6.5mm/1.475ct Loose Stone
coming soon 【12562015掲載】南アフリカ産南アフリカ産ロードクロサイト 2.694ctルース

[Lottery Sale 0620_03] South African Rhodochrosite 2.694ct Loose Stone Sale price¥228,000
Sold out 【12562017掲載】ブラジル産ヘルデライト 0.421ctルース

Brazilian Herderite 0.421ct loose stone

coming soon 【12562018掲載】ブラジル産ヘルデライト 0.509ctルース

Brazilian Herderite 0.509ct loose stone Sale price¥35,800
Sold out Datolite from the USA, 0.592ct Loose Stone (Westfield, Manchester)

Datolite from the USA, 0.592ct Loose Stone (Westfield, Manchester)

Sold out 【12562021掲載】ファイアオパール 6.742ctルース

Mexican fire opal 6.742ct loose

Sold out 【12562025掲載】ブラジル産ライモナイトインブルートパーズ 6.701ctルース

Brazilian Limonite in Blue Topaz 6.701ct Loose Stone

Sold out 【12562044掲載】オーストラリア産レインボーラティスサンストーン 2.188ctルース

Australian Rainbow Lattice Sunstone 2.188ct Loose
Sold out 【12562049掲載】オーストラリア産レインボーラティスサンストーン 0.373ctルース

Australian Rainbow Lattice Sunstone 0.373ct Loose

Sold out 【12562052掲載】カナダ産カナダ産ユーディアライト 5.714ctルース

Canadian Eudialite 5.714ct Loose Stone with Certificate of Authenticity
Sold out 【12562053掲載】カナダ産カナダ産ユーディアライト 3.359ctルース

3.359ct Canadian Eudialyte Loose Stone with Identification Report
Sold out Canada Eudialyte 2.5mm/0.059ct Loose Stone with Certificate of Authenticity

Canada Eudialyte 2.5mm/0.059ct Loose Stone with Certificate of Authenticity
Sold out Canadian Eudialyte 2.5mm/0.047ct Loose Stone with Certification

Canadian Eudialyte 2.5mm/0.047ct Loose Stone with Certification
coming soon Canadian Eudialite 2.5mm/0.051ct Loose Stone with Certificate of Authenticity

Canadian Eudialite 2.5mm/0.051ct Loose Stone with Certificate of Authenticity Sale price¥18,800
Sold out American Neptunite 0.290ct Loose Stone with Certificate of Authenticity

American Neptunite 0.290ct Loose Stone with Certificate of Authenticity
Sold out 【12562061掲載】アメリカ産ネプチュナイト 0.256ctルース

0.256ct Neptunite from the USA, with a certificate

Sold out American Neptunite 0.207ct Loose Stone with Certificate of Authenticity

American Neptunite 0.207ct Loose Stone with Certificate of Authenticity
Sold out Mali Garnet (Grossular/Andradite Garnet) 0.675ct Loose Stone

Mali Garnet (Grossular/Andradite Garnet) 0.675ct Loose Stone
Sold out 【12559023掲載】ブラジル産アベンチュリンベリル 0.621ctルース

Brazilian Aventurine Beryl 5.5mm/0.621ct Loose Stone
Sold out Limited to 2 stones: Greenland Ruby, 1 stone, loose (2.2mm, top color, with certificate) (Multiple purchase discount available)

Limited to 2 stones: Greenland Ruby, 1 stone, loose (2.2mm, top color, with certificate) (Multiple purchase discount available)

Sold out 《Limited to 2 Stones》Greenland Pink Sapphire Loose Stone (5.0mm, Heart-shaped, with Certificate) 《Multiple Purchase Discount Available》

《Limited to 2 Stones》Greenland Pink Sapphire Loose Stone (5.0mm, Heart-shaped, with Certificate) 《Multiple Purchase Discount Available》

Sold out 《Limited to 15 stones》Topaz Gacha with Koshu Kiseki Kiriko 10ct (normally 69,800 yen) and sherry-colored Imperial Topaz included 《Multiple purchase discount available》

《Limited to 15 stones》Topaz Gacha with Koshu Kiseki Kiriko 10ct (normally 69,800 yen) and sherry-colored Imperial Topaz included 《Multiple purchase discount available》

Sold out A single loose pink diamond, including a fancy pink diamond, normally priced at 39,800 yen (multiple purchase discounts available)

A single loose pink diamond, including a fancy pink diamond, normally priced at 39,800 yen (multiple purchase discounts available)

Sold out Pink diamond 0.070ct loose (FANCY INTENSE PURPLE PINK, I1)

Pink diamond 0.070ct loose (FANCY INTENSE PURPLE PINK, I1)
Sold out Pink diamond 0.030ct loose (FANCY PURPLE PINK, SI2)

Pink diamond 0.030ct loose (FANCY PURPLE PINK, SI2)
Sold out モンタナサファイア 0.443ctルース

Montana Sapphire 0.443ct loose (green sapphire)
Sold out Montana Sapphire 0.561ct loose (bicolor sapphire)

Montana Sapphire 0.561ct loose (bicolor sapphire)
Sold out Montana Sapphire 0.361ct loose (yellow sapphire)

Montana Sapphire 0.361ct loose (yellow sapphire)

Sold out ピンクダイヤモンド 0.073ルース(FANCY DEEP PURPLISH PINK, SI1)

Pink Diamond 0.073 Loose (FANCY DEEP PURPLISH PINK, SI1)
Sold out Bicolor Sphalerite 9.8mm/4.517ct loose

Bicolor Sphalerite 9.8mm/4.517ct loose
Sold out モンタナサファイア 0.416ctルース

Montana Sapphire 0.416ct Loose (Bi-Color Sapphire)
Sold out モンタナサファイア 0.458ctルース

Montana Sapphire 0.458ct Loose (Bi-Color Sapphire)
Sold out アウイナイト 0.064ctルース

Auinite 2.4mm/0.064ct loose
Sold out Auinite 2.3mm/0.060ct loose

Auinite 2.3mm/0.060ct loose
Sold out モンタナサファイア 0.235ctルース

Montana Sapphire 0.235ct loose (yellow sapphire)
Sold out オーストラリア産シェルオパール（貝オパール） 96.177ct原石

Australian shell opal (shell opal) 96.177ct rough stone
Sold out ウォーターメロントルマリン 3.403ctルース

Watermelon tourmaline 3.403ct loose
Sold out ブルージルコン 0.267ctルース

Cambodian blue zircon 0.267ct loose

Sold out アメリカ産レッドベリル 0.120ctルース

American Red Beryl 0.120ct Loose
Sold out デンドリティッククォーツ 4.272ctルース

Brazilian Dendritic Quartz 4.272ct Loose Stone
Sold out オーストラリア産レインボーラティスサンストーン 1.082ctルース

Australian rainbow lattice sunstone 1.082ct loose
Sold out オーストラリア産レインボーラティスサンストーン 0.587ctルース

Australian rainbow lattice sunstone 0.587ct loose
Sold out ブルッカイレピドクロサイトインクォーツ） 7.354ctルース

Platinum Rutilated Quartz (Brookier Lepidocrocite in Quartz) 7.354ct Loose
Sold out 《Limited to 13 stones》Synthetic Gacha (with additional synthetic alexandrite) including D/IF/3EX lab-grown diamonds normally priced at 39,800 yen and Sakura-cut YAGs normally priced at 59,800 yen. 《Multiple purchase discount available》

《Limited to 13 stones》Synthetic Gacha (with additional synthetic alexandrite) including D/IF/3EX lab-grown diamonds normally priced at 39,800 yen and Sakura-cut YAGs normally priced at 59,800 yen. 《Multiple purchase discount available》
Sold out [On sale June 7th at 10 PM] Limited to 1 set: 6-stone Benitoite Gradient Set, including Orange Benitoite (Peach Benitoite) (2.25mm, includes top quality) [Multiple Purchase Discount Available]

[On sale June 7th at 10 PM] Limited to 1 set: 6-stone Benitoite Gradient Set, including Orange Benitoite (Peach Benitoite) (2.25mm, includes top quality) [Multiple Purchase Discount Available]
Sold out Benitoite Gradation 6 Stone Set (2.0mm, Round Cut, Including Top Quality) 《Multiple Purchase Discount Available》

Benitoite Gradation 6 Stone Set (2.0mm, Round Cut, Including Top Quality) 《Multiple Purchase Discount Available》

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.