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コッパールチルクォーツ 1.560ctルース

Brazilian copper rutilated quartz 1.560ct loose stone Sale price¥8,800
コッパールチルクォーツ 1.381ctルース

Brazilian copper rutilated quartz 1.381ct loose stone Sale price¥8,800
ブラジル産コッパールチルクォーツ 1.991ctルース

Brazilian copper rutilated quartz 1.991ct loose stone Sale price¥6,980

Additional charge: K18YG (base metal) + 10,000 yen Sale price¥7,000

Additional charge: K18YG (base metal) + 10,000 yen Sale price¥7,000

Additional charge for resizing: 8,000 yen Sale price¥8,000
メキシコ産エッグインオパール 0.627ctルース

Mexican egg-in-opal 0.627ct loose stone Sale price¥8,800
エチオピア産オパール 0.294ctルース

Ethiopian Opal 0.294ct Loose (Heart Shape, Faceted Cut) Sale price¥6,980
モンタナサファイア 0.254ctルース

Montana Sapphire 0.254ct loose Sale price¥9,800
コーネルピンキャッツアイ 0.866ctルース

Tanzanian Kornerupine Cat's Eye 0.866ct Loose Stone Sale price¥5,980
タンザニア産コーネルピンキャッツアイ 1.539ctルース

Tanzanian Kornerupine Cat's Eye 1.539ct Loose Stone Sale price¥9,800
パープルスピネル 0.422ctルース

Purple Spinel 4.8mm/0.422ct Loose Stone Sale price¥6,980
ピンクスピネル 0.573ctルース

Pink spinel 5.2mm/0.573ct loose stone Sale price¥6,580
ピンクスピネル 0.342ctルース

Pink spinel 4.3mm/0.342ct loose Sale price¥6,980
ピンクスピネル 0.192ctルース

Pink spinel 3.8mm/0.192ct loose Sale price¥5,980
パープルスピネル 0.465ctルース

Purple spinel 0.465ct loose Sale price¥5,980
マダガスカル産ペツォッタイト 0.128ctルース

Pezzotite from Madagascar 0.128ct loose Sale price¥6,980
マダガスカル産ペツォッタイト 0.142ctルース

Pezzottite from Madagascar 0.142ct loose Sale price¥9,800
マダガスカル産ペツォッタイト 0.129ctルース

Pezzotite from Madagascar 0.129ct loose Sale price¥6,980
マダガスカル産ペツォッタイト 0.087ctルース

Pezzottite from Madagascar 0.087ct loose Sale price¥6,980
ダイヤモンド 0.534ct原石

Diamond 0.534ct ​​rough stone Sale price¥9,800
アフガニスタン産シーライト 1.011ctルース

Sealite from Afghanistan 1.011ct loose Sale price¥5,980
シーライト 1.086ctルース

Sealite from Afghanistan 1.086ct loose Sale price¥5,980
バイカラートルマリン 0.675ctルース

Bicolor tourmaline 0.675ct loose Sale price¥6,980
Andalusite 0.604ct loose

Andalusite 0.604ct loose Sale price¥6,980
合成モアッサナイト 0.372ctルース

Synthetic moissanite 0.372ct loose Sale price¥9,800
ミントカラートルマリン 0.115ctルース

Mint color tourmaline 0.115ct loose Sale price¥5,980
パープルスピネル 0.754ctルース

Purple spinel 0.754ct loose Sale price¥9,800
ラベンダースピネル 0.305ctルース

Lavender spinel 0.305ct loose Sale price¥7,980
イギリス産ロジャリーフローライト 1.841ctルース

British Rosary Fluorite 1.841ct loose Sale price¥5,980
コーネルピンキャッツアイ 0.513ctルース

Cornel pin cat's eye 0.513ct loose Sale price¥6,980
コーネルピンキャッツアイ 0.872ctルース

Cornel pin cat's eye 0.872ct loose Sale price¥6,980
スキャポライトキャッツアイ 8.880ctルース

Scapolite Cat's Eye 8.880ct Loose Sale price¥8,800

Additional fee: 7,500 yen Sale price¥7,500

Additional charge for resizing: 9,750 yen Sale price¥9,750

Additional charge for resizing: 6,750 yen Sale price¥6,750

Additional charge for resizing: 8,250 yen Sale price¥8,250

Additional charge for resizing: 9,000 yen Sale price¥9,000
Sold out 「起源がわかる 宝石大全」初版＆宝石小瓶 2点セット

“An Encyclopedia of Gems that Understand the Origin” & Sapphire 2 Stone Set《Purchased in Chanthaburi, Thailand》

Sold out [Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery

[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery

Sold out [On Sale 9/27, 10:00 PM] TV Anime "Dr. STONE" × Jewelry Specialist KARATZ Collaboration: Professional Gemologist's Logo Loupe & Strap Set (includes explanatory card)

[On Sale 9/27, 10:00 PM] TV Anime "Dr. STONE" × Jewelry Specialist KARATZ Collaboration: Professional Gemologist's Logo Loupe & Strap Set (includes explanatory card)

Sold out [Jeweler's Tools] Collection set of 24 loose cases, 3 loose cases [cut by Mr. KEN, worth 8,000 yen]

[Jeweler's Tools] Collection set of 24 loose cases, 3 loose cases [cut by Mr. KEN, worth 8,000 yen]

Sold out 【再入荷】鉱物標本スタンドとサンストーンorアイオライトの2点セット - KARATZ STORE｜カラッツSTORE

[Restocked] 2-piece set of mineral specimen stand and sunstone or iolite

Sold out Diamond 2mm (VS class, DG color, round cut, melee diamond 2.0mm) 1 loose stone {Multiple purchase discounts available}

Diamond 2mm (VS class, DG color, round cut, melee diamond 2.0mm) 1 loose stone {Multiple purchase discounts available}
Sold out 「決定版 アンカットダイヤモンド」サイン入り初版本 ＆ダイヤモンド原石（グリーン蛍光）2点セット

"Definitive Uncut Diamond" by Kyoichi Suwa, signed first edition & 2-piece set of diamonds (hexagonal cut)

Sold out [Sales End on Monday, January 12th] TV Anime "Tokyo Ghoul" x KARATZ Collaboration Part 2: Newly Illustration Merchandise - Random Hard Cards (12 Types)

[Sales End on Monday, January 12th] TV Anime "Tokyo Ghoul" x KARATZ Collaboration Part 2: Newly Illustration Merchandise - Random Hard Cards (12 Types)

Sold out Top Quality: Brazilian Alexandrite 1 Stone Loose (2.0mm, Hematita Mine) Multiple Purchase Discounts Available

Top Quality: Brazilian Alexandrite 1 Stone Loose (2.0mm, Hematita Mine) Multiple Purchase Discounts Available
Sold out 【9/27 22:00 Release】 TV Anime "Dr. STONE" × Jewelry Specialty Store KARATZ Collaboration: Chibi Character Acrylic Keychain

【9/27 22:00 Release】 TV Anime "Dr. STONE" × Jewelry Specialty Store KARATZ Collaboration: Chibi Character Acrylic Keychain

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.