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green/green gems

There are a variety of green and green-toned gemstones, including emerald, jade, peridot, demantoid garnet, diopside, and green tourmaline. Even if the colors are similar, highly transparent gemstones and opaque gemstones give a very different impression. The atmosphere also varies depending on the saturation, brightness, and cut.

Karatz Gem Magazine
" 10 Green Gems "

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コロンビア産エメラルド 0.150ctルース

[Available 9/22, 10 PM] Colombian Emerald 0.150ct Loose Stone Sale price¥12,800
Brazilian parti-color tourmaline 2.702ct loose stone

Brazilian parti-color tourmaline 2.702ct loose stone Sale price¥69,800
スリランカ・ラトゥナプラ産クリソベリル 0.335ct原石

[Available 9/18, 10:00 PM] Chrysoberyl rough from Ratnapura, Sri Lanka, 0.335ct Sale price¥6,980
コロンビア産パイライト付きエメラルド 0.634ct原石

[Available 9/19 at 10 PM] Colombian Emerald with Pyrite, 0.634ct Raw Gemstone Sale price¥19,800
コロンビア産パイライト付きエメラルド 0.981ct原石

[On sale 9/19 at 22:00] Colombian Emerald with Pyrite, 0.981ct Raw Gemstone Sale price¥29,800
コロンビア産エメラルド 1.645ct原石

[Available 9/19 at 10:00 PM] 1.645ct Colombian Emerald Rough Stone Sale price¥49,800
ブラジル産アレキサンドライト 0.054ctルース

[Available 9/20 at 10:00 PM] Brazilian Alexandrite 0.054ct Loose Gemstone Sale price¥12,800
合成アレキサンドライト 0.716ctルース

[Available 9/20 at 10:00 PM] Synthetic Alexandrite 0.716ct Loose Stone Sale price¥15,800
合成アレキサンドライト 0.657ctルース

[Available 9/20 at 10 PM] Synthetic Alexandrite 0.657ct Loose Stone Sale price¥14,800
コロンビア産エメラルド 0.078ctルース

【Available 9/22, 10:00 PM】 Colombian Emerald 0.078ct Loose Gemstone Sale price¥18,800
コロンビア産エメラルド 0.267ctルース

[Available Sept. 21, 10:00 PM] Colombian Emerald 0.267ct Loose Gemstone Sale price¥39,800
コロンビア産エメラルド 0.152ctルース

[Available 9/21, 10:00 PM] Colombian Emerald 0.152ct Loose Gemstone Sale price¥25,800
ブラジル産ミントカラーエメラルド 0.451ctルース

[Available Sept 21, 10 PM] Brazilian Mint Color Emerald 0.451ct Loose Stone Sale price¥15,800
ザンビア産エメラルド 0.199ctルース

【Available 9/21, 10 PM】 Zambian Emerald 0.199ct Loose Gemstone Sale price¥9,800
ナイジェリア産グリーンベリル 0.311ctルース

[Available 9/21, 10:00 PM] Nigerian Green Beryl 0.311ct Loose Gemstone Sale price¥7,980
スリランカ産グリーンジルコン 0.403ctルース

[On sale 9/21 at 22:00] Sri Lankan Green Zircon 0.403ct Loose Stone Sale price¥5,980
コロンビア産パイライト・雲母インエメラルド 0.628ctルース

Colombian pyrite-mica emerald 0.628ct loose stone Sale price¥29,800
コロンビア産エメラルド 0.231ctルース

Colombian emerald 0.231ct loose stone Sale price¥25,800
Madagascar sphene 0.665ct loose stone

Madagascar sphene 0.665ct loose stone Sale price¥9,800
非加熱ブラジル産パライバトルマリン 0.051ctルース（CuO:2.0%、MnO:2.3%）

Unheated Brazilian Paraiba Tourmaline 0.051ct loose stone (CuO: 2.0%, MnO: 2.3%) Sale price¥39,800
[202608GIA Appraisal Request] [Sale on June 5th at 10 PM] Russian Demantoid Garnet (with horsetail inclusion) 5.8mm/0.876ct Loose Stone with Appraisal Report

[202608GIA Appraisal Request] [Sale on June 5th at 10 PM] Russian Demantoid Garnet (with horsetail inclusion) 5.8mm/0.876ct Loose Stone with Appraisal Report Sale price¥258,000
【202608GIA Appraisal Request】【On Sale June 5th, 10 PM】Russian Demantoid Garnet (with horsetail inclusion) 6.8mm/1.366ct Loose Stone with Appraisal Report

【202608GIA Appraisal Request】【On Sale June 5th, 10 PM】Russian Demantoid Garnet (with horsetail inclusion) 6.8mm/1.366ct Loose Stone with Appraisal Report Sale price¥458,000
Russian Demantoid Garnet (Horsetail Recognized) 5.1mm/0.664ct Loose Stone

Russian Demantoid Garnet (Horsetail Recognized) 5.1mm/0.664ct Loose Stone Sale price¥228,000
[202608GIA Appraisal Request] Russian Demantoid Garnet (horsetail inclusion confirmed) 5.2mm/0.661ct Loose Stone

[202608GIA Appraisal Request] Russian Demantoid Garnet (horsetail inclusion confirmed) 5.2mm/0.661ct Loose Stone Sale price¥248,000
コロンビア産エメラルド 0.247ctルース

[Available 9/12, 10:00 PM] Colombian Emerald 0.247ct Loose Gemstone Sale price¥39,800
【12562567掲載】ボリビア産フォスフォフィライト 1.806ctルース

[Lottery Sale 0812_19] Bolivian Phosphophyllite 1.806ct Loose Stone with Gemstone Identification Report Sale price¥69,800
ブラジル・ファナジーニョ産スフェーン 0.956ctルース 鑑別書

【Lottery Sale 0818_02】Brazilian Fanaizinho Sphene 0.956ct Loose Stone with Certificate Sale price¥19,800
ブラジル産インディゴライトトルマリン 3.756ctルース

Lottery Sale 0812_15: Brazilian Indicolite Tourmaline 3.756ct Loose Stone with Japan-Germany Gemological Report Sale price¥98,000
Brazilian Paraiba Tourmaline 0.037ct Loose (CuO:1.9%, MnO:2.3%)

Brazilian Paraiba Tourmaline 0.037ct Loose (CuO:1.9%, MnO:2.3%) Sale price¥29,800
Paraiba Tourmaline from Brazil 0.067 ct loose (CuO: 1.4%, MnO: 2.4%)

Paraiba Tourmaline from Brazil 0.067 ct loose (CuO: 1.4%, MnO: 2.4%) Sale price¥39,800
ブラジル産パライバトルマリン 0.239ctルース（CuO:1.0%、MnO:3.9%）

Brazilian Alexandrite 0.239ct Loose Gemstone [Listed as 12564071] Sale price¥45,800
タンザニア産バイカラーグロッシュラーガーネット 0.869ctルース

【Available Sept 10, 10:00 PM】 Tanzanian Bicolor Grossular Garnet 0.869ct Loose Stone Sale price¥25,800
タンザニア産バイカラーグロッシュラーガーネット 0.433ctルース

[9/7 10:00 PM Sale] Tanzania Bicolor Grossular Garnet 0.433ct Loose Stone Sale price¥15,800
タンザニア産バイカラーグロッシュラーガーネット 0.596ctルース

【Available 9/7 at 10 PM】 Tanzanian Bicolor Grossular Garnet 0.596ct Loose Gemstone Sale price¥14,800
インド産パロットクリソベリル 0.288ctルース

【9/7 10 PM Release】Indian Parrot Chrysoberyl 0.288ct Loose Stone Sale price¥12,800
インド産パロットクリソベリル 0.630ctルース

[Available 9/7 at 10 PM] Indian Parrot Chrysoberyl 0.630ct Loose Gemstone Sale price¥18,800
スリランカ産クリソベリルキャッツアイ 0.526ctルース

[Available 9/7 at 10 PM] Sri Lankan Chrysoberyl Cat's Eye 4.3mm / 0.526ct Loose Gemstone Sale price¥15,800
スリランカ産クリソベリルキャッツアイ 0.537ctルース

[Available 9/11 at 10:00 PM] Sri Lankan Chrysoberyl Cat's Eye 4.2mm/0.537ct Loose Stone Sale price¥18,800
非加熱ブラジル産パライバトルマリン 0.079ctルース（CuO:1.8%、MnO:2.6%）

Unheated Brazilian Paraiba Tourmaline 0.079ct loose stone (CuO: 1.8%, MnO: 2.6%) Sale price¥45,800
グリーンフローライト 38.074ctルース

Green Fluorite 38.074ct Loose Sale price¥148,000
ブラジル産パーティカラーパライバトルマリン 0.490ctルース GIA

Brazilian Particolor Paraiba Tourmaline 0.490ct Loose (Bicolor Paraiba Tourmaline) GIA Sale price¥398,000
コロンビア産パイライトインエメラルド 2.988ctルース

[Lottery Sale 0731_06] Colombian Pyrite in Emerald 2.988 ct Loose Stone with Japanese and German Gemological Certificates Sale price¥228,000
コロンビア産ノンオイルエメラルド 0.370ctルース

[Lottery Sale 0731_10] Colombian Muzo Non-Oil Emerald 0.370ct Loose GIA Sale price¥298,000
マダガスカル産バイカラーサファイア 1.870ctルース

[Lottery Sale 0818_07] Madagascar Bi-Color Sapphire 1.870ct Loose Stone with Gem Identification Report Sale price¥79,800
ブラジル産ダイオプテーズ 1.608ctルース

[Lottery Sale 0818_09] Brazilian Dioptase 1.608ct Loose with Certificate Sale price¥59,800
コロンビア産ノンオイルエメラルド 0.090ctルース

[Lottery Sale 0825_10] Colombian Non-Oil Emerald 0.090ct Loose GIA Sale price¥128,000
ザンビア産ノンオイルエメラルド 0.540ctルース

[Lottery Sale 0812_18] Zambian Non-Oil Emerald 0.540ct Loose GIA Sale price¥178,000

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.