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 "

[Sales begin July 21st, 10 PM] Kochi Prefecture Harvested Red Coral 1.446ct Loose Stone Sale price¥12,800

[On sale July 21st, 10 PM JST] Kochi Prefecture natural red coral 1.119ct loose stone Sale price¥11,800

[On sale July 18, 10 PM JST] Kochi Prefecture Blood Coral 1.001ct Loose Stone Sale price¥12,800

[Sales begin 10 PM on July 18] Kochi Prefecture blood coral, 1.290 ct loose stone Sale price¥12,800

【Sales Start: July 18, 10 PM JST】Kochi Prefecture Blood Red Coral 1.348ct Loose Stone Sale price¥12,800

[Sale starts 10 PM, July 17th] High-Grade Red Coral (Kochi Prefecture) 1.063ct Loose Stone Sale price¥12,800

[On sale July 16th at 10 PM] Kochi Prefecture produced oxblood coral, 1.087ct loose gemstone Sale price¥12,800

[Sale at 10 PM on July 20th] American Oregon Sunstone 7.0mm/1.345ct Loose Sale price¥35,800

[On Sale 7/18 at 10 PM] US Oregon Sunstone 1.032ct Loose Stone Sale price¥25,800

[Sales start July 15th at 10 PM] Myanmar Red Spinel 0.229ct Loose Stone with Gemstone Report Sale price¥45,800

[On sale 7/12 at 10 PM] US Oregon Sunstone 7.1mm/1.397ct Loose Stone Sale price¥39,800

[On sale July 11th at 10 PM JST] USA Oregon Sunstone 10.8mm/4.864ct Loose Gemstone Sale price¥98,000

[On sale July 16th, 10 PM JST] American Oregon Sunstone 7.0mm/1.224ct Loose Stone Sale price¥28,800

[On sale July 10th at 10 PM] US Oregon Sunstone 8.1mm/1.840ct Loose Sale price¥39,800

[Sales start July 13, 10 PM] Kochi Prefecture red coral 4.485 ct loose stone Sale price¥98,000

Sold out

[12563393 listed] Tanzanian Red Spinel 0.098ct Loose Stone

[Listed on 12562258] Eudialyte from Canada 2.796 ct loose stone Sale price¥39,800

[On sale July 4, 10 PM] 0.416 ct Loose Mozambique Ruby with Certificate Sale price¥29,800

Kochi Prefecture oxblood coral 1.593ct loose Sale price¥9,800

Kochi Prefecture Blood Coral 1.585ct Loose Gemstone Sale price¥9,800

Kochi Prefecture Aka Sango (Red Coral) 10.209ct Loose Stone Sale price¥29,800

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

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

【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

[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

[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

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.