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 "

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%) 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

【Available Sept 10, 10:00 PM】 Tanzanian Bicolor Grossular Garnet 0.869ct Loose Stone Sale price¥25,800

[9/7 10:00 PM Sale] Tanzania Bicolor Grossular Garnet 0.433ct Loose Stone Sale price¥15,800

【Available 9/7 at 10 PM】 Tanzanian Bicolor Grossular Garnet 0.596ct Loose Gemstone Sale price¥14,800

【9/7 10 PM Release】Indian Parrot Chrysoberyl 0.288ct Loose Stone Sale price¥12,800

[Available 9/7 at 10 PM] Indian Parrot Chrysoberyl 0.630ct Loose Gemstone Sale price¥18,800

[Available 9/7 at 10 PM] Sri Lankan Chrysoberyl Cat's Eye 4.3mm / 0.526ct Loose Gemstone Sale price¥15,800

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

Green Fluorite 38.074ct Loose Sale price¥148,000

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

[Lottery Sale 0731_06] Colombian Pyrite in Emerald 2.988 ct Loose Stone with Japanese and German Gemological Certificates Sale price¥228,000

[Lottery Sale 0731_10] Colombian Muzo Non-Oil Emerald 0.370ct Loose GIA Sale price¥298,000

[Lottery Sale 0818_07] Madagascar Bi-Color Sapphire 1.870ct Loose Stone with Gem Identification Report Sale price¥79,800

[Lottery Sale 0818_09] Brazilian Dioptase 1.608ct Loose with Certificate Sale price¥59,800

[Lottery Sale 0825_10] Colombian Non-Oil Emerald 0.090ct Loose GIA Sale price¥128,000

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

[8/30 22:00 Release] Madagascar Sapphirine 0.164ct Loose Stone with Appraisal Certificate Sale price¥12,800

[Available 8/30 at 10:00 PM] Madagascar Sapphirine 0.145ct Loose Stone with Identification Report Sale price¥11,800

【8/30 10 PM Release】Sphene from Zimbabwe 0.302ct Loose Gemstone Sale price¥8,800

[Available 8/30 at 10 PM] Colombian Mint Color Emerald 0.359ct Loose Stone Sale price¥12,800

[Available 8/30 at 10 PM] Zimbabwean Sphene 0.332ct Loose Gemstone Sale price¥9,800

[Available 8/29 at 10 PM] Madagascar Andalusite 0.454ct Loose Gemstone Sale price¥7,980

[8/29 10 PM Sale] Tanzanian Mint Garnet 0.296ct Loose Gemstone 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

【9/1 10 PM Release】Colombian Emerald 0.123ct Loose Gemstone Sale price¥18,800

【9/1 10 PM Release】US Peridot 1.280ct Loose Stone Sale price¥18,800

[Available 9/1 at 10 PM] Tanzanian Tsavorite 0.366ct Loose Stone Sale price¥13,800

[Available 9/1 at 10 PM] Afghan Mint Color Tourmaline 0.290ct Loose Stone Sale price¥14,800

[9/2 10 PM Sale] Madagascar Sapphirine 0.166ct Loose Gemstone with Identification Report Sale price¥13,800

[Available 9/3 at 10 PM] Brazilian Montebrasite 4.0mm/0.251ct Loose Stone Sale price¥8,800

【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

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.