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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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非加熱ブラジル産パライバトルマリン 0.068ctルース（CuO:1.7%、MnO:2.4%）

Unheated Brazilian Paraiba Tourmaline 0.068ct loose stone (CuO: 1.7%, MnO: 2.4%) Sale price¥45,800
タンザニア産コーネルピンキャッツアイ 1.608ctルース

Tanzanian Kornerupine Cat's Eye 1.608ct Loose Stone Sale price¥6,980
アフガニスタン産グリーンアウイナイト 0.135ctルース 鑑別書

[On Sale June 28th at 10 PM] Afghanistan Green Hauyne 3.6mm/0.135ct Loose Stone with Appraisal Sale price¥35,800
ブラジル産アレキサンドライト 0.265ctルース

[Sale on July 6th at 10 PM] Brazilian Silky Alexandrite Loose Stone 0.265ct with Certificate Sale price¥45,800
ブラジル産ダイオプテーズ 0.956ctルース

[On sale July 1st, 10 PM JST] Brazilian Dioptase 0.956ct Loose Stone with Certificate Sale price¥23,800
タンザニア産グリーンサファイア 0.303ctルース

Tanzanian green sapphire 0.303ct loose stone Sale price¥8,800
コロンビア産ミントカラーエメラルド 0.297ctルース

Colombian mint color emerald 0.297ct loose stone Sale price¥8,800
ブラジル産アレキサンドライト 0.116ctルース

Brazilian alexandrite 0.116ct loose Sale price¥15,800
非加熱ブラジル産パライバトルマリン 0.052ctルース

Brazilian Paraiba Tourmaline 0.052ct Loose Stone (CuO:2.0%, MnO:2.2%) Sale price¥35,800
グリーントルマリン 2.218ctルース

Brazilian Green Tourmaline 2.218ct Loose Sale price¥25,800
グリーントルマリン 1.206ctルース

Namibian Green Tourmaline 7.0mm/1.206ct Loose Stone (Lagoon Tourmaline) Sale price¥59,800
非加熱ブラジル産パライバトルマリン 0.081ctルース

Unheated Brazilian Paraiba Tourmaline 0.081ct loose stone (CuO: 2.1%, MnO: 2.3%) Sale price¥75,800
コロンビア産トラピッチェエメラルド 0.183ctルース

[On sale June 19, 10 PM] Colombian Trapiche Emerald 0.183ct Loose Stone Sale price¥39,800
合成アレキサンドライト 1.381ctルース

[On sale June 12th at 10 PM] Synthetic Alexandrite 1.381ct Loose Stone Sale price¥25,800
合成アレキサンドライト 1.076ctルース

[On sale 6/12 10 PM JST] Synthetic Alexandrite 1.076ct Loose Stone Sale price¥25,800
コロンビア産トラピッチェエメラルド 0.210ctルース

[On sale June 23rd, 10 PM JST] Colombian Trapiche Emerald 0.210ct Loose Stone Sale price¥39,800
ブラジル産カナリーイエロークリソベリル 0.672ctルース

[On sale June 14, 10 PM JST] Brazilian Canary Yellow Chrysoberyl 0.672 ct Loose Gemstone Sale price¥18,800
アンダリュサイト 0.416ctルース

【On sale June 14, 10 PM】Spanish Andalusite 0.416ct Loose Stone Sale price¥9,800
非加熱ブラジル産パライバトルマリン 0.065ctルース（CuO:1.6%、MnO:2.4%）

0.065ct loose Paraiba tourmaline from Brazil (CuO: 1.6%, MnO: 2.4%) Sale price¥49,800
コロンビア産ノンオイルエメラルド 0.210ctルース

[On Sale June 7, 10 PM] 0.210ct Untreated Colombian Emerald Loose Stone, GIA Certified Sale price¥228,000
コロンビア産トラピッチェエメラルド 1.875ctルース

[On sale June 7th at 10 PM] Colombian Trapiche Emerald, 1.874ct Loose Stone, with Identification Report Sale price¥69,800
コロンビア産パイライトインエメラルド 4.221ctルース

[Sale on June 6 at 10 PM] Pyrite in Emerald from Chivor Mine, Colombia, 4.221 ct Loose Stone Sale price¥98,000
インド・オリッサ産アレキサンドライト 0.764ctルース

[Sale 10 PM JST, June 7] Alexandrite from Odisha, India 0.764 ct Loose Stone with Certificate Sale price¥29,800
インド・オリッサ産アレキサンドライト 0.759ctルース

[On sale June 7th at 10 PM] India Odisha Alexandrite 0.759ct Loose Gemstone with Identification Report Sale price¥22,800
インド・オリッサ産アレキサンドライト 0.715ctルース

[On Sale June 8th, 10 PM JST] India, Orissa Origin Alexandrite 0.715ct Loose Stone with Certification Sale price¥18,800
ペルー産ジェムシリカ（クリソコーラ・カルセドニー） 4.098ctルース

[On sale June 6th, 10 PM JST] Peruvian Gem Silica (Chrysocolla Chalcedony) 4.098ct Loose Stone with Japan-Germany Gemological Report Sale price¥24,800
ペルー産ジェムシリカ（クリソコーラ・カルセドニー） 3.210ctルース

[On sale June 6th at 10 PM JST] Peruvian Gem Silica (Chrysocolla Chalcedony) 3.210ct Loose Stone, GIA & JGGL Certified Sale price¥19,800
ペルー産ジェムシリカ（クリソコーラ・カルセドニー） 2.556ctルース

[Sale on 6/6 at 10 PM JST] Peruvian Gem Silica (Chrysocolla Chalcedony) 2.556ct Loose Stone with Japan-Germany Gemstone Report Sale price¥15,800
ロシア産デマントイドガーネット（ホーステール認む） 1.366ctルース

[Sales start June 5th, 10 PM] Russian Demantoid Garnet (horsetail inclusion visible) 6.8mm/1.366ct Loose Stone with Appraisal Report Sale price¥398,000
ロシア産デマントイドガーネット（ホーステール認む） 1.589ctルース

[On sale June 5th at 10 PM] Russian Demantoid Garnet (Horsetail inclusion confirmed) 6.9mm/1.589ct Loose Stone with Appraisal Report Sale price¥458,000
ロシア産デマントイドガーネット（ホーステール認む） 0.876ctルース

[On sale 6/5 at 10 PM] Russian Demantoid Garnet (horsetail inclusion visible) 5.8mm/0.876ct Loose Stone with Appraisal Report Sale price¥258,000
Loose Paraiba Tourmaline from Brazil, 0.059ct (CuO: 1.4%, MnO: 2.7%)

Loose Paraiba Tourmaline from Brazil, 0.059ct (CuO: 1.4%, MnO: 2.7%) Sale price¥45,800
Brazilian Paraiba Tourmaline 0.065ct Loose Stone (CuO: 2.0%, MnO: 2.4%)

Brazilian Paraiba Tourmaline 0.065ct Loose Stone (CuO: 2.0%, MnO: 2.4%) Sale price¥49,800
0.066ct loose Brazilian Paraiba Tourmaline (CuO: 1.5%, MnO: 2.2%)

0.066ct loose Brazilian Paraiba Tourmaline (CuO: 1.5%, MnO: 2.2%) Sale price¥45,800
Paraiba Tourmaline from Brazil, 0.063 ct, loose (CuO: 1.8%, MnO: 2.4%)

Paraiba Tourmaline from Brazil, 0.063 ct, loose (CuO: 1.8%, MnO: 2.4%) Sale price¥55,800
Loose 0.061ct Brazilian Paraiba Tourmaline (CuO: 1.7%, MnO: 2.2%)

Loose 0.061ct Brazilian Paraiba Tourmaline (CuO: 1.7%, MnO: 2.2%) Sale price¥49,800
Brazilian Paraiba Tourmaline 0.055ct Loose (CuO:1.9%, MnO:2.2%)

Brazilian Paraiba Tourmaline 0.055ct Loose (CuO:1.9%, MnO:2.2%) Sale price¥45,800
Paraiba Tourmaline from Brazil 0.056ct loose stone (CuO: 1.7%, MnO: 2.3%)

Paraiba Tourmaline from Brazil 0.056ct loose stone (CuO: 1.7%, MnO: 2.3%) Sale price¥45,800
0.062ct Loose Paraiba Tourmaline from Brazil (CuO: 1.7%, MnO: 2.5%)

0.062ct Loose Paraiba Tourmaline from Brazil (CuO: 1.7%, MnO: 2.5%) Sale price¥47,800
Brazilian Paraiba Tourmaline 0.058ct Loose Gemstone (CuO: 2.0%, MnO: 2.2%)

Brazilian Paraiba Tourmaline 0.058ct Loose Gemstone (CuO: 2.0%, MnO: 2.2%) Sale price¥39,800
Brazilian Paraiba Tourmaline 0.056ct Loose Stone (CuO:2.1%, MnO:2.2%)

Brazilian Paraiba Tourmaline 0.056ct Loose Stone (CuO:2.1%, MnO:2.2%) Sale price¥39,800
タンザニア・マヘンゲ産コーネルピン 0.172ctルース

Tanzanian Kornerupine 0.172ct loose stone Sale price¥12,800
マダガスカル産グリーンサファイア 0.253ctルース

Madagascar Green Sapphire 0.253ct Loose Sale price¥9,800
タンザニア産グリーンゾイサイト 0.709ctルース

Tanzania Green Zoisite 0.709ct Loose Stone Sale price¥16,800
ケニア産ツァボライト 0.357ctルース

[On sale May 31, 10 PM JST] Tsavorite from Kenya 4.0mm/0.357ct loose stone Sale price¥12,800
ブラジル産シーフォームトルマリン 0.303ctルース

【Sale Starts May 30th at 10 PM JST】Brazilian Seafoam Tourmaline 4.1mm/0.303ct Loose Stone Sale price¥16,800
ブラジル産シーフォームトルマリン 0.280ctルース

[On sale May 31, 10 PM JST] Brazilian Seafoam Tourmaline 4.1mm/0.280ct Loose Sale price¥15,800
ブラジル産シーフォームトルマリン 0.334ctルース

[On sale June 6, 10 PM JST] Brazilian Seafoam Tourmaline 0.334ct Loose Stone Sale price¥16,800

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.