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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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Sold out ブラジル産シーフォームトルマリン 0.347ctルース

[Sale on 6/6 at 10 PM JST] Brazilian Seafoam Tourmaline 0.347 ct Loose Gemstone
Sold out コロンビア産エメラルド 0.167ctルース

Colombian emerald 0.167ct loose stone with jewel
Sold out コロンビア産パイライト・雲母インエメラルド 0.844ctルース

Colombian pyrite-mica emerald 0.844ct loose stone
Sold out 【12562862掲載】コロンビア産トラピッチェエメラルド 0.448ctルース

Colombian Trapiche Emerald, 0.446 ct, Loose Stone, with Certificate
Sold out 合成アレキサンドライト 1.355ctルース

[On sale 10 PM, May 15th] Synthetic Alexandrite Loose Stone, 1.355 ct
Sold out 合成アレキサンドライト 0.557ctルース

【Sales from 10 PM on May 17th】Synthetic Alexandrite 0.557ct Loose Stone
Sold out 合成アレキサンドライト 0.663ctルース

[On sale May 17th at 10 PM] Synthetic Alexandrite 5.1mm/0.663ct Loose Gemstone
Sold out ティールブルーサファイア 0.275ctルース

[Sale on May 12th at 10 PM] Teal Blue Sapphire 0.275 ct Loose Stone
coming soon 【12563029掲載】ブラジル産グリーントルマリン 1.319ctルース

[Lottery Sale 0531_09] Nigerian Mint Green Tourmaline 1.319ct Loose Stone with Certificate Sale price¥69,800
Sold out ブラジル産パライバトルマリン 0.177ctルース

Brazilian Paraiba Tourmaline 0.177ct loose stone (CuO: 2.1%, MnO: 1.3%)
Sold out ボリビア産フォスフォフィライト 0.448ctルース

Bolivian Phosphophyllite 0.448ct Loose Stone with Certificate

Sold out 【12562785掲載】コロンビア産エメラルドキャッツアイ 0.574ctルース

【On sale May 2nd, 10 PM JST】Colombian Emerald Cat's Eye 0.574ct Loose Stone
Sold out コロンビア産エメラルド 4.7mm/0.468ctルース

[On sale 5/5 at 22:00] Colombian Emerald 4.7mm/0.468ct Loose Stone

Sold out [Sale starts 10 PM JST on 5/14] Colombian Emerald 1.571ct Loose Stone Pendant Top

[Sale starts 10 PM JST on 5/14] Colombian Emerald 1.571ct Loose Stone Pendant Top
coming soon 【12562864掲載】コロンビア産トラピッチェエメラルド 4.185ctルース

【Lottery Sale 0531_12】Colombian Trapiche Emerald 4.185ct Loose Stone, Chuo (Central Gem Lab) Sale price¥158,000
Sold out 【12562799掲載】コロンビア産パイライトインエメラルド 2.780ctルース

Lottery Sale 13 [For Winners Only] [Listed on 12562799] Colombian Pyrite in Emerald 2.780ct Loose Rare Stone [Limited to 1] 198,000 yen 12562799

coming soon タンザニア産アレキサンドライト 0.843ct原石

Rough Tanzanian Alexandrite 0.843ct Sale price¥29,800
Sold out Loose Columbian Pyrite in Emerald 3.346 ct

Loose Columbian Pyrite in Emerald 3.346 ct

Sold out コロンビア産パイライトインエメラルド 2.503ctルース

2.503 ct Loose Emerald with Pyrite from Colombia

Sold out モザンビーク産パライバトルマリン 1.581ctルース

Paraiba tourmaline from Mozambique 1.581ct loose stone (CuO: 0.5%, MnO: 1.0%)
Sold out Brazilian Paraiba Tourmaline 0.216ct loose stone (CuO:1.2%, MnO:2.7%)

Brazilian Paraiba Tourmaline 0.216ct loose stone (CuO:1.2%, MnO:2.7%)
Sold out Colombian mica in emerald 1.314ct loose

Colombian mica in emerald 1.314ct loose
Sold out カメレオンダイヤモンド 0.153ctルース(LIGHT GRAY GREEN, SI-1)

Chameleon Diamond 0.153ct Loose (LIGHT GRAY GREEN, SI-1)
Sold out 【12562747掲載】マダガスカル産非加熱ティールグリーンサファイア 1.740ctルース

Madagascar Unheated Teal Green Sapphire 1.74ct Loose GIA

Sold out Indian Alexandrite Cat's Eye 1.03ct Loose GIA

Indian Alexandrite Cat's Eye 1.03ct Loose GIA

Sold out ブラジル産パーティカラーパライバトルマリン 0.260ctルース

0.260ct Loose Parti-Color Paraiba Tourmaline from Brazil

Sold out 【12562690掲載】ロシア産スターダイオプサイド 7.056ctルース

Russian Star Diopside 7.056 ct Loose Stone

Sold out 【12561981掲載】アメリカ産オレゴンサンストーン 1.893ctルース

Oregon Sunstone from the USA, 8.1mm/1.893ct, loose
Sold out Brazilian alexandrite 0.109ct loose

Brazilian alexandrite 0.109ct loose
Sold out [Sakura Cut] Mongolian Andesine 8.0mm/1.652ct Necklace

[Sakura Cut] Mongolian Andesine 8.0mm/1.652ct Necklace

Sold out 【さくらインカット】モンゴル産アンデシン 8.0mm/1.652ctルース

[Sakura Cut] Mongolian Andesine 8.0mm/1.652ct Loose Stone

Sold out ケニア産バイカラーグロッシュラーガーネット 0.479ctルース

Kenya Bi-color Grossular Garnet (Bi-color Tsavorite) 0.479ct Loose Stone
Sold out ロシア産デマントイドガーネット（ホーステール認む） 0.265ctルース

Russian Demantoid Garnet (Horsetail) 3.8mm/0.265ct Loose Stone
Sold out アフガニスタン産インディゴライトトルマリン 1.729ctルース

Afghanistan indigolite tourmaline 1.729ct loose stone

Sold out ケニア産クロムトルマリン 0.501ctルース

Kenyan chrome tourmaline 0.501ct loose stone

Sold out Colombian No-Oil Emerald 0.120ct Loose Stone GIA

Colombian No-Oil Emerald 0.120ct Loose Stone GIA
Sold out モスアゲート 0.795ctルース

Moss agate 0.795ct loose stone
Sold out ボリビア産フォスフォフィライト 0.512ctルース

Bolivian Phosphophyllite 0.512ct Loose Gemstone with Certificate

Sold out ボリビア産フォスフォフィライト 0.300ctルース

Bolivian phosphophyllite, 0.300ct loose stone, with鑑別書

Sold out エメラルド 2.498ctルース

[Clover in cut] Emerald 9mm/2.498ct {Collaboration} Loose with patch
Sold out コロンビア産エメラルド 2.018ctルース

[Koshu precious stone cutter pluethree] Colombian emerald 2.018ct loose
Sold out Tanzanian UV Type Mint Garnet 0.440ct Loose Stone

Tanzanian UV Type Mint Garnet 0.440ct Loose Stone
Sold out 【12562076掲載】アメリカ産オレゴンサンストーン 1.334ctルース

Oregon Sunstone from the United States, 7.2mm/1.334ct loose stone
Sold out Oregon Sunstone from USA 7.1mm/1.366ct Loose

Oregon Sunstone from USA 7.1mm/1.366ct Loose
Sold out 【12561933掲載】ティールグリーンサファイア 2.058ctルース

Teal Green Sapphire 2.058 ct Loose Stone with Appraisal

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 【12558711掲載】ドゥニライト 0.132ctルース

Sri Lankan Dunilite 0.132ct Loose Stone with Certificate of Authenticity
Sold out Montana Sapphire 0.449ct loose (bicolor sapphire)

Montana Sapphire 0.449ct loose (bicolor sapphire)

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.