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 "

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

Brazilian Particolor Paraiba Tourmaline 0.490ct Loose (Bicolor Paraiba Tourmaline) GIA Sale price¥398,000

【8/30 22時販売】マダガスカル産サファリン 0.164ctルース鑑別書 Sale price¥12,800

【8/30 22時販売】マダガスカル産サファリン 0.145ctルース鑑別書 Sale price¥11,800

【8/30 22時販売】ジンバブエ産スフェーン 0.302ctルース Sale price¥8,800

【8/30 22時販売】コロンビア産ミントカラーエメラルド 0.359ctルース Sale price¥12,800

【8/30 22時販売】ジンバブエ産スフェーン 0.332ctルース Sale price¥9,800

【8/29 22時販売】マダガスカル産アンダリュサイト 0.454ctルース Sale price¥7,980

【8/29 22時販売】ロシア産デマントイドガーネット（ホーステール認む） 2.7mm/0.093ctルース Sale price¥14,800

【8/29 22時販売】タンザニア産ミントガーネット 0.296ctルース Sale price¥8,800

Pakistani Peridot 5.2mm/0.562ct Loose Stone Sale price¥9,800

[#202607 Akihabara Pop-up Store - Currently Removed from Stock] [12554030 Listed] Alexandrite Cat's Eye 1.655ct Loose Stone Sale price¥98,000

Synthetic Alexandrite 0.578ct loose stone Sale price¥9,800

Synthetic Alexandrite 0.841ct loose stone Sale price¥15,800

【9/1 22時販売】コロンビア産エメラルド 0.123ctルース Sale price¥18,800

【9/1 22時販売】アメリカ産ペリドット 1.280ctルース Sale price¥18,800

【9/1 22時販売】アメリカ産ペリドット 0.803ctルース Sale price¥9,800

【9/1 22時販売】タンザニア産ツァボライト 0.366ctルース Sale price¥13,800

【9/1 22時販売】アフガニスタン産ミントカラートルマリン 0.290ctルース Sale price¥14,800

【9/2 22時販売】ブラジル産アレキサンドライト 2.8mm/0.112ctルース鑑別書 Sale price¥39,800

【9/2 22時販売】マダガスカル産サファリン 0.166ctルース鑑別書 Sale price¥13,800

【Lottery Sale ②_202608_15】Tanzanian Chrome Tourmaline 2.271ct Loose Stone Sale price¥98,000

[Posted 12549460] Star peridot from Myanmar 3.748ct loose Sale price¥19,800

[On sale August 27th at 10 PM JST] Russian Demantoid Garnet (Horsetail inclusion visible) 3.8mm/0.280ct Loose Sale price¥59,800

【Sales start: August 22nd, 10 PM JST】Tanzanian Mint Garnet 0.238ct Loose Stone Sale price¥12,800

[On sale August 22, 10 PM] Bi-Color Grossular Garnet from Kenya 0.278ct Loose Sale price¥12,800

【Sales start 8/22 10 PM JST】Bicolor Grossular Garnet from Kenya 0.906ct Loose Stone Sale price¥39,800

[On sale August 23rd at 10 PM] US Oregon Sunstone 6.0mm/ 0.729ct Loose Sale price¥18,800

[On sale August 27th at 10 PM] Sri Lankan green sapphire 0.354ct loose stone with certificate Sale price¥12,800

[12563388 listed] Dioptase from Brazil, 0.894ct loose stone Sale price¥22,800

[Listed as 12563455] Tanzanian Bi-color Grossular Garnet 0.801 ct Loose Stone Sale price¥19,800

[Listing 12563877] Afghan Green Hauyne 0.269ct Loose Sale price¥98,000

[Featured on 12563911] Colombian Pyrite and Mica in Emerald, 0.409ct Loose Gemstone Sale price¥32,800

[Sale on August 23rd at 10 PM] Moldavite from former Czechoslovakia 9.1mm/2.296ct Loose Stone with Certificate Sale price¥32,800

[Sale on August 23rd at 10 PM] Old Czechoslovakia Moldavite 2.091ct Loose Stone with Certificate Sale price¥29,800

[On sale August 23rd at 10 PM] Old Czechoslovakia Moldavite 1.817ct Loose Stone with Certificate of Authenticity Sale price¥24,800

[Sale on August 23 at 10 PM] Old Czechoslovakia Moldavite 1.786ct Loose Stone with Certificate Sale price¥22,800

【Sales start 8/28 10 PM JST】Moldavite Loose Stone 2.265ct from former Czechoslovakia with Certificate Sale price¥29,800

[Listed as 12563903] Tanzanian Bicolor Zoisite 1.382ct Loose Stone Sale price¥45,800

Brazilian Alexandrite 0.105ct Loose Stone [Listed under 12563842] Sale price¥29,800

コロンビア産パイライト・雲母インエメラルド 5.5mm/0.614ctルース鑑別書

[Published on 12563914] Loose Colombian Pyrite and Mica in Emerald, 0.614 ct Sale price¥45,800

[Item 12564022] Tanzanian Mint Diopside 0.794ct Loose Stone Sale price¥22,800

Zoisite from Tanzania, 0.643 ct loose Sale price¥18,800

コロンビア産パイライト・雲母インエメラルド 5.0mm/0.500ctルース鑑別書

[12563912 listed] Colombian Pyrite and Mica in Emerald 0.500ct Loose Stone Sale price¥39,800

【Lottery Sale 0731_08】Brazilian Emerald Cat's Eye 6.083ct Loose Gemstone with Japanese and German Gemological Report Sale price¥258,000

[#202607 Akihabara Pop-up Store - Currently Removed] [Shinjuku Marui Annex 202605 - Currently Removed] [12559525 Listed] Synthetic Alexandrite 1.409ct Loose Stone Sale price¥39,800

【#202607 Akihabara Pop-up Store - Currently at Offsite Location】【Shinjuku Marui Annex 202605 Offsite Location】Lottery Sale 11【For Winners Only】【Published on 12559975】Colombian Non-Oil Emerald 1.760ct Loose GIA Sale price¥1,580,000

【#202607 Akihabara Pop-up Items Out for Display】【12555648 Posted】Ludwigite in Peridot from Pakistan 1.624ct Loose Sale price¥9,800

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.