Red/red system

An impressive red gemstone that hides gorgeousness and strength. Typical examples include ruby, red diamond, red spinel, almandine garnet, rubellite, red beryl, and blood red coral, but there are many others. Many have a pinkish or orange tinge, and even if you say red, the impression varies depending on the gemstone.

Karatz GemMagazine
" 10 Red Jewels "

Almandine Garnet 1.471ct Loose Stone Sale price¥14,800

Almandine Garnet 1.388ct Loose Stone Sale price¥11,800

Almandine Garnet 1.988ct Loose Stone Sale price¥16,800

Almandine Garnet 1.485ct Loose Stone Sale price¥15,800

Almandine Garnet 1.058ct Loose Stone Sale price¥12,800

Tanzanian Rhodolite Garnet 0.448ct Loose Stone Sale price¥6,980

Tanzanian Rhodolite Garnet 0.810ct Loose Stone Sale price¥9,800

[On sale June 23 at 10 PM] Untreated Ruby 0.207ct Loose Stone (Houseki Kyo certificate) Sale price¥69,800

Almandine Garnet 0.660ct Loose Sale price¥6,980

【Sales start: June 15, 10 PM JST】Almandine Garnet from Tanzania 0.938ct Loose Stone Sale price¥12,800

[On sale June 17th at 10 PM] Canadian Eudialyte 2.4mm/0.052ct Loose Stone with Appraisal Sale price¥15,800

[Sale June 16th, 10 PM] Myanmar Red Spinel 0.453ct Loose Stone Sale price¥19,800

[Sales begin June 15th, 10 PM] Myanmar Red Spinel 3.5mm/0.174ct Loose Stone Sale price¥7,980

[Sale starts June 16th at 10 PM] Myanmar Red Spinel 3.3mm/0.172ct Loose Stone Sale price¥8,800

[Sales start 10 PM on June 16] Myanmar Red Spinel 3.5mm/0.214ct Loose Gemstone Sale price¥9,800

[On sale June 14th at 10 PM] Myanmar Red Spinel 3.4mm/0.194ct Loose Stone Sale price¥9,800

[Sale starts June 16th, 10 PM JST] Myanmar Red Spinel 0.234ct Loose Gemstone Sale price¥12,800

[On Sale June 16, 10 PM] Loose 0.249ct Myanmar Red Spinel Sale price¥12,800

American Red Beryl 0.147ct Loose Sale price¥35,800

American Red Beryl 0.132ct Loose Sale price¥33,800

American red beryl 0.143ct loose Sale price¥35,800

Lepidocrocite in quartz 0.532ct loose Sale price¥6,980

1.758 ct Ruby Loose Stone from Vietnam with Identification Report Sale price¥49,800

Mozambique Ruby 0.544ct Loose Stone with Certificate of Authenticity Sale price¥39,800

[On sale May 30th at 10 PM] Mongolian Andesine 0.464ct Loose Stone Sale price¥9,800

[Sale on June 13th at 10 PM] Ruby 0.820ct Loose Stone - Hogikyo Sale price¥39,800

[On Sale June 2nd, 10 PM JST] Mozambique Ruby 0.464ct Loose Gemstone with Identification Report Sale price¥29,800

[Sale starts June 13th at 10 PM] Kochi Prefecture Blood Coral 2.340ct Loose Stone Sale price¥19,800

[Sale on June 13 at 10 PM] Kochi Prefecture Red Coral Loose Stone 2.294ct Sale price¥19,800

[Sales start 10 PM on June 8th] High-Grade Red Coral from Kochi Prefecture, 2.187ct Loose Stone Sale price¥19,800

【Sales Start: June 8th, 10 PM JST】Kochi Prefecture-produced Red Coral, 1.975ct Loose Stone Sale price¥18,800

[On sale June 8th at 10 PM JST] Kochi Prefecture-produced oxblood coral, 1.879 ct loose stone Sale price¥18,800

【On sale June 13th at 10 PM】Kochi Prefecture Red Coral Rough Stone 6.520ct Sale price¥8,800

[Available June 13, 10 PM JST] Kochi Prefecture Blood Coral 6.848ct Branch (Rough) Sale price¥9,800

[On Sale June 8th at 10 PM] Kochi Prefecture Blood Coral 16.659ct Branch (Raw Material) Sale price¥18,800

Almandine Garnet 0.814ct Loose Stone Sale price¥7,980

Almandine Garnet 1.049ct Loose Stone Sale price¥9,800

American red beryl 0.160ct loose Sale price¥89,800

Unheated Mozambique Ruby 2.7mm/0.135ct Loose Sale price¥19,800

[Sale on 5/17 at 10 PM] Cinnabar from Xinhua, Hunan Province, China, 1.056 ct Loose Stone with Gemological Report Sale price¥18,800

[Sale begins May 18th, 10 PM JST] Chinese Cinnabar (Hunan Province) 0.867ct Loose Stone with Certification Sale price¥13,800

[On sale May 15, 10 PM JST] Chinese Cinnabar from Hunan Province, 0.842ct Loose Stone with Certificate Sale price¥15,800

[On Sale May 9th at 10 PM JST] Australian Opal with Matrix, 14.840ct, Loose Stone, Gemstone Report Sale price¥69,800

[Sales start May 6, 10 PM] Canadian Eudialyte 0.056ct Loose Stone with Certificate Sale price¥15,800

[On Sale May 2 at 10 PM] Ruby 0.286ct Loose Gemstone with Identification Report Sale price¥22,800

Ruby 0.528ct Loose Stone with Gem Identification Report Sale price¥28,800

[On Sale 5/2 at 10 PM JST] Mozambique Almandine Garnet 17.770ct Loose Stone Sale price¥98,000

Burmese ruby 3.72ct loose GIA/CGL Sale price¥298,000

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.