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[Sale starts 10 PM JST 7/31] Colombian Pyrite and Mica in Emerald Loose Stone, 1.192ct, with Certificate

[Sale starts 10 PM JST 7/31] Colombian Pyrite and Mica in Emerald Loose Stone, 1.192ct, with Certificate Sale price¥79,800
[Posted as 12563944] Colombian Trapiche Emerald 0.252ct Loose Stone

[Posted as 12563944] Colombian Trapiche Emerald 0.252ct Loose Stone Sale price¥35,800
[Listed as 12563943] Colombian Trapiche Emerald 0.231ct Loose Gemstone

[Listed as 12563943] Colombian Trapiche Emerald 0.231ct Loose Gemstone Sale price¥33,800
【Published on 12563872】Brazilian Rubellite 0.285ct Loose Stone

【Published on 12563872】Brazilian Rubellite 0.285ct Loose Stone Sale price¥15,800
【Posted on 12563871】Cambodian Blue Zircon (Ratanakiri Blue) 1.847ct Loose Stone

【Posted on 12563871】Cambodian Blue Zircon (Ratanakiri Blue) 1.847ct Loose Stone Sale price¥22,800
ナイジェリア産マンダリンガーネット 0.750ctルース

[On sale 7/30 at 10 PM] Nigerian Mandarin Garnet 0.750 ct Loose Stone with Gemstone Identification Report Sale price¥22,800
ブラジル産メデューサクォーツ（パライバクォーツ） 0.456ctルース

[12558272 listed] Brazilian Medusa Quartz (Paraiba Quartz) 0.456ct Loose Sale price¥9,800
ゴールデンジルコン 0.752ctルース

[On sale 7/30 at 10 PM] Tanzanian Golden Zircon 0.752ct Loose Stone with Certificate Sale price¥12,800
ブラジル産アレキサンドライト 0.102ctルース 鑑別書

[On sale July 29th, 10 PM JST] Brazilian Alexandrite 0.102ct Loose Stone with Certification Sale price¥29,800
【12563995掲載】オーストラリア産ブラックオパール 0.702ctルース

[Posted on 12563995] Australian Black Opal 0.702 ct Loose Stone Sale price¥29,800
スリランカ産ホワイトサファイア 1.025ctルース 鑑別書

[On sale July 29, 10 PM] Sri Lankan White Sapphire 1.025ct Loose Stone with Certification Sale price¥35,800
アフガニスタン産グリーンアウイナイト 0.150ctルース

[On sale July 29th at 10 PM] Afghan Green Hauyne 0.150ct Loose Stone with Certificate Sale price¥55,800
マダガスカル産サファイア 1.650ctルース GIA

[Lottery Sale 0521_08] Madagascar Sapphire 1.650ct Loose GIA Sale price¥158,000
ブラジル産ピンクインペリアルトパーズ 1.907ctルース 日独鑑

[Listed as 12562727] Pink Imperial Topaz 1.907ct Loose Stone Sale price¥118,000
コロンビア産トラピッチェエメラルド 0.184ctルース

[On sale July 28th at 10 PM] Colombia Cosquez Trapiche Emerald 0.184ct Loose, with identification certificate Sale price¥25,800
コロンビア・コスケス鉱山トラピッチェエメラルド 0.177ctルース 鑑別書

[On Sale 7/25 at 10 PM JST] Colombia Cosquez Mine Trapiche Emerald 0.177ct Loose Stone with Certificate Sale price¥29,800
コロンビア産トラピッチェエメラルド 0.157ctルース

[On sale July 28, 10 PM JST] Colombia, Cosquez Trapiche Emerald, 0.157 ct Loose Stone with Certificate Sale price¥22,800
コロンビア・コスケス鉱山トラピッチェエメラルド 0.144ctルース 鑑別書

[Sale starts July 25th at 10 PM] Colombian Cosquez Mine Trapiche Emerald 0.144ct Loose Stone with Certification Sale price¥22,800
コロンビア・コスケス鉱山トラピッチェエメラルド 0.138ctルース 鑑別書

[Sales Start: July 25th, 10 PM JST] Colombia Cosquez Mine Trapiche Emerald 0.138ct Loose Stone with Certification Sale price¥19,800
スペイン産バイカラースファレライト 6.6mm/1.521ctルース

[On sale July 24 at 10 PM] Spanish Bicolor Sphalerite 6.6mm/1.521ct Loose Stone Sale price¥22,800
スペイン産スファレライト 6.5mm/1.321ctルース

[On sale July 26th at 10 PM] Spanish Sphalerite 6.5mm/1.321ct Loose Stone Sale price¥19,800
カラーチェンジフローライト 1.099ctルース

[On sale July 27th at 10 PM] Brazilian color change fluorite, 1.099 ct loose stone Sale price¥9,800
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） 0.240ctルース

[On Sale 7/27 10 PM] Nara Prefecture, Tenkawa Village Rainbow Garnet (Andradite Garnet) 3.5mm/0.240ct Loose Stone Sale price¥8,800
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） 0.336ctルース

[On Sale 7/27 10 PM] Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture 3.8mm/0.336ct Loose Stone Sale price¥9,800
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） 3.9mm/0.378ctルース（ローズカット）

[On Sale July 24 at 10 PM] Nara Prefecture, Tenkawa Village Rainbow Garnet (Andradite Garnet) 3.9mm/0.378ct Loose Stone (Rose Cut) Sale price¥9,800
マダガスカル産アパタイト 0.608ctルース

[On sale July 26th, 10 PM JST] Madagascar Apatite 0.608ct Loose Gemstone Sale price¥8,800
高知県産血赤珊瑚 1.439ctルース

【On sale at 10 PM on July 26】Kochi Prefecture red coral 1.439ct loose gemstone Sale price¥9,800
高知県産血赤珊瑚 0.978ctルース

[On sale July 26th at 10 PM] Kochi Prefecture Red Coral 0.978ct Loose Stone Sale price¥9,800
高知県産血赤珊瑚 1.128ctルース

【Sales start 10 PM, July 26 JST】Kochi Prefecture Blood Coral Loose Stone 1.128ct Sale price¥9,800
血赤珊瑚 1.238ctルース

[On sale July 28th at 10 PM] Kochi Prefecture produced blood coral 1.238ct loose stone Sale price¥9,800
血赤珊瑚 1.286ctルース

【Sales start: July 28, 10 PM JST】Kochi Prefecture Produced Blood Coral 1.286ct Loose Stone Sale price¥9,800
血赤珊瑚 1.379ctルース

【For Sale July 28, 10 PM JST】Kochi Prefecture Red Coral Loose Stone 1.379 ct Sale price¥11,800
高知県産血赤珊瑚 1.321ctルース

[On sale July 26th at 10 PM] Kochi Prefecture Red Coral 1.321ct Loose Stone Sale price¥9,800
コロンビア産エメラルド 0.286ctルース

[Available 7/28 10 PM JST] Colombian Emerald, 4.5mm/0.286ct Loose Gemstone, Hoki-kyo Sale price¥69,800
タンザニア産バイカラーグロッシュラーガーネット 0.319ctルース

【Sales start: July 30, 10 PM JST】Tanzanian Bi-Color Grossular Garnet 0.319ct Loose Stone Sale price¥19,800
マダガスカル産パパラチアサファイア 0.159ctルース

[On sale July 30th at 10 PM] Madagascar Padparadscha Sapphire 0.159ct Loose Stone with Central Gem Lab Certificate Sale price¥38,800
マダガスカル産パパラチアサファイア 0.305ctルース

[On sale July 28th at 10 PM] Madagascar Paparadscha Sapphire 4.0mm/0.305ct Loose Stone with Central Gem Lab Report Sale price¥67,800
マダガスカル産パパラチアサファイア 0.208ctルース

[On sale July 26th at 10 PM] Madagascar Padparadscha Sapphire 3.4mm/0.208ct Loose Stone with Central Gem Lab Certificate Sale price¥45,800
[On sale July 31, 10 PM JST] Madagascar Padparadscha Sapphire 3.5mm/0.234ct Loose Stone with Central Gemological Laboratory certificate

[On sale July 31, 10 PM JST] Madagascar Padparadscha Sapphire 3.5mm/0.234ct Loose Stone with Central Gemological Laboratory certificate Sale price¥49,800
カンボジア産ブルージルコン（ラタナキリブルー） 1.360ctルース

[On sale July 28th at 10 PM] Cambodian Blue Zircon (Ratanakiri Blue) 1.360ct Loose Stone with Certificate Sale price¥18,800
オレゴンサンストーン 1.032ctルース

[On sale 7/28 10 PM] USA Oregon Sunstone 6.7mm/1.032ct Loose Stone Sale price¥18,800
[Listed as 12563874] Afghanistan Green Hauyne 0.185ct Loose Stone

[Listed as 12563874] Afghanistan Green Hauyne 0.185ct Loose Stone Sale price¥65,800
ブラジル産ダイオプテーズ 0.487ctルース

[12563386 posted] Brazilian Dioptase 0.487ct Loose Stone Sale price¥12,800
メキシコ産ファイアオパール 1.115ctルース

[Listed as 12563246] Mexican Fire Opal 1.115ct Loose Sale price¥25,800
アメリカ産ネプチュナイト 0.199ctルース

[12562256 listed] American Neptunite 0.199ct Loose Sale price¥55,800
マダガスカル産ティールグリーンサファイア 0.470ctルース

[Posted on 12563480] Madagascar Teal Green Sapphire 0.470ct Loose Stone Sale price¥29,800
ブラジル産インディゴライトトルマリン 0.404ctルース

[Listed as 12563731] Brazilian Indicolite Tourmaline 0.404 ct Loose Stone Sale price¥39,800
マダガスカル産バイカラーサファイア 0.522ctルース

0.522ct bicolor sapphire loose stone from Madagascar Sale price¥6,980

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.