Under 1.0 ct

[#202607 Akihabara Pop-up Store - Currently out on display] [Listed under item 12562542] Australian Black Opal 0.530ct Loose Stone Sale price¥14,800

[#202607AkihabaraPopUpTakenOut] [12560302Listed] Magnesioaxinite 0.154ct Loose Sale price¥18,800

[#202607 Akihabara Pop-up currently out of office] [Sale starts August 19th, 10 PM JST] Slice Trapiche Diamond 0.228ct Loose Sale price¥18,800

[On sale August 9, 10 PM] Nigerian Indicolite Tourmaline 0.241ct Loose Stone with Certification Sale price¥25,800

【Sales start: August 13, 10 PM JST】Loose Zimbabwe Sphene, 0.512 ct, with certificate Sale price¥17,800

[On sale August 13 at 10 PM] 0.356ct Zimbabwe Sphene Loose Stone with Certificate Sale price¥12,800

[On sale August 9, 10 PM] Australian Opal 0.674ct Loose Stone with Certificate Sale price¥8,800

[On sale August 9 at 10 PM JST] German Hauyne 3.5mm/0.134ct Loose Stone with Certificate Sale price¥29,800

【#202607 Akihabara Pop-up Store - Currently Removed from Stock】【Listed on 12563127】Nigerian Cobalt Hausmannite 0.147ct Loose Sale price¥22,800

[On sale August 16 at 10 PM] Brazilian Spessartine Garnet 0.580ct Loose Stone with Certificate of Authenticity Sale price¥14,800

[On sale August 9, 10 PM] Untreated Purple-Pink Imperial Topaz, 0.250 ct Loose Stone, with Certificate, from Brazil Sale price¥39,800

[On sale August 19th, 10 PM JST] Untreated Purple-Pink Imperial Topaz from Brazil, 0.241ct loose stone with gemological report Sale price¥35,800

[Sale starts 8/14 at 10 PM JST] Pakistani Lazulite (blue spar) 0.056ct Loose Gemstone with Certificate Sale price¥11,800

[On Sale August 16th at 10 PM] Lazurite (Lapis Lazuli) from Pakistan, 0.116ct Loose Stone with Certificate Sale price¥24,800

[On sale 8/9 at 10 PM] Pakistani Lapis Lazuli (Lazurite) 0.063ct Loose Stone with Certificate Sale price¥14,800

[Sale at 10 PM on August 9] Pakistan Lazurite (Lapis Lazuli) 0.054ct Loose Gemstone with Certificate Sale price¥12,800

[Sale on August 9 at 10 PM] Pakistani Lazurite (Lapis Lazuli) 0.052ct Loose Stone with Certificate Sale price¥12,800

[On Sale August 19, 10 PM] Brazilian Spessartine Garnet 0.968 ct Loose Stone with Certificate Sale price¥25,800

[On sale August 11th at 10 PM] Brazilian Pink Tourmaline 0.689ct Loose Stone with Appraisal Sale price¥15,800

[On sale August 19th at 10 PM] Colombian Pyrite and Mica in Emerald 5.5mm/0.617ct Loose Stone with Certification Sale price¥45,800

[On Sale August 16, 10 PM] Burmese Red Spinel 0.236ct Loose Stone with Certificate Sale price¥45,800

[Listed on 12563962] Madagascar Padparadscha Sapphire 0.314 ct Loose Stone Sale price¥69,800

[On sale August 2nd at 10 PM JST] Sweet Home Mine Rhodochrosite 0.100ct Loose Gemstone with Certificate Sale price¥8,800

コロンビア産パイライト・雲母インエメラルド 4.8mm/0.360ctルース鑑別書

[Sale on 8/6 at 10 PM JST] Colombian Pyrite and Mica in Emerald, 4.8mm/0.360ct, Loose Stone with Certificate Sale price¥29,800

[On sale August 1, 10 PM] Colombian Cosquez Trapiche Emerald 0.252ct Loose Stone with Certificate Sale price¥35,800

[On sale August 1, 10 PM JST] Colombian Cosquez Trapiche Emerald, 0.231 ct, Loose Stone with Certificate Sale price¥33,800

[On sale August 14th at 10 PM] Colombian Cosquez Trapiche Emerald, 0.199ct Loose Stone with Appraisal Sale price¥29,800

Afghan Green Hauyne 0.062ct Loose with Certificate Sale price¥16,800

0.750ct Loose Nigerian Mandarin Garnet with Certification Sale price¥22,800

[12558272 listed] Brazilian Medusa Quartz (Paraiba Quartz) 0.456ct Loose Sale price¥9,800

0.752ct Tanzanian Golden Zircon Loose Gemstone with Certificate Sale price¥12,800

[Listed as 12563891] Namibian Jeremejevite 0.089ct Loose Sale price¥22,800

Brazilian Alexandrite 0.102ct Loose Stone with Certification Sale price¥29,800

[Sales start August 2nd at 10 PM] Madagascar blue sapphire 0.662 ct loose gemstone with a certificate Sale price¥18,800

[On sale August 2 at 10 PM] Colombian Emerald 0.107 ct Loose Gemstone with Certificate Sale price¥12,800

Afghan Green Hauyne 0.150ct Loose Stone with Certificate Sale price¥55,800

0.184ct Trapiche Emerald Loose from Cosquez, Colombia, with Appraisal Report Sale price¥25,800

Colombian Trapiche Emerald (from Cosquez) 0.157ct Loose Stone with Certificate Sale price¥22,800

Columbia Cosquez Mine Trapiche Emerald 0.144ct Loose with Identification Report Sale price¥22,800

Colombia Cosquez Mine Trapiche Emerald 0.138ct Loose with Certificate Sale price¥19,800

奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 3.9mm/0.378ctルース（ローズカット）

Andradite Garnet (Rainbow Garnet) from Tenkawa Village, Nara Prefecture, 3.9mm/0.378ct loose stone (rose cut) Sale price¥9,800

Apatite from Madagascar 0.608ct Loose Stone Sale price¥8,800

Kochi Prefecture-produced red coral 0.978ct loose stone Sale price¥9,800

【Sales begin August 12, 10 PM JST】Kochi Prefecture-produced Oxblood Coral 0.908ct Loose Stone Sale price¥9,800

Colombia Emerald 4.5mm/0.286ct Loose Stone (Hokikyō) Sale price¥69,800

Colombia Emerald Cat's Eye 0.060ct Loose, Hōki Kyō Sale price¥15,800

0.319 ct Tanzanian bicolor grossular garnet loose stone Sale price¥19,800

Madagascar Padparadscha Sapphire 3.4mm/0.208ct Loose Gem with Central Gem Laboratory Appraisal Sale price¥45,800

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.