Oval Cut

[Published as 12564055] American Red Beryl 0.239ct Loose Stone Sale price¥69,800

[12564014 listed] Madagascar Royal Blue Sapphire 0.559ct Loose Stone Sale price¥45,800

[#202607 Akihabara Pop-up Store - Currently out on loan] [Listed as 12563392] Tanzanian Red Spinel 0.291ct Loose Stone Sale price¥35,800

【#202607 Akihabara Pop-up Store - Currently Removed for Display】Lottery Sale: Brazilian Microlite Loose Stone, 0.138ct Sale price¥29,800

[Lottery Sale 0620_06] Boké Coral (Kochi Prefecture) 6.735ct Loose Sale price¥39,800

[Lottery Sale 0707_06] Kunzite from Afghanistan, 69.722ct Loose Stone Sale price¥258,000

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.459ctルース

[Lottery Sale 0707_08] Madagascar Bekily Blue Garnet (Color Change Garnet) 0.459ct Loose Stone with Certificate Sale price¥69,800

[Lottery Sale 0628_05] American Neptunite 0.374ct Loose Stone with Gemstone Identification Report Sale price¥79,800

[Lottery Sale 0725_11] Burmese Pigeon Blood Ruby 0.450ct Loose AIGS Sale price¥98,000

[#202607 Akihabara Popup Exhibit] [Published in 12563402] Petzottaite, Madagascar, 0.188ct Loose Sale price¥35,800

[#202607AkihabaraPopUpTakeOut][12563062Published] Padparadscha Sapphire 0.690ct Loose Stone Sale price¥158,000

[#202607AkihabaraPopUpOnLoan][12563137 Listed] Brazilian Santa Maria Aquamarine 0.264ct Loose Stone Sale price¥18,800

[12564094 listed] Afghanite from Afghanistan 0.018ct Loose Sale price¥5,980

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

coming soon

【Featured in 12564077】Lazurite from Pakistan, 0.056ct Loose Stone Sale price¥11,800

coming soon

【Listed as 12564076】Lazulite from Pakistan 0.097ct Loose Stone Sale price¥22,800

【12564074 posted】 Lazurite from Pakistan 0.063ct loose Sale price¥14,800

[Published 12564073] Lapis Lazuli (Lazurite) from Pakistan, 0.054ct Loose Gemstone Sale price¥12,800

【12564072 Published】 Lazurite from Pakistan 0.052ct Loose Gemstone Sale price¥12,800

[Published 12563933] Brazilian Rubellite 1.100ct Loose Stone Sale price¥98,000

【Sales start 10 PM, August 2 JST】Bicolor Euclase from Zimbabwe 0.066ct Loose Stone Sale price¥12,800

[On sale August 2nd, 10 PM JST] Bicolor Euclase from Zimbabwe, 0.081ct loose gemstone Sale price¥14,800

[Sale starts 10 PM JST 7/31] Colombian Pyrite and Mica in Emerald Loose Stone, 1.192ct, with Certificate Sale price¥79,800

【On Sale August 1st, 10 PM JST】Cambodian Blue Zircon (Ratanakiri Blue) 1.847ct Loose Stone with Certificate Sale price¥22,800

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

[On sale July 29th, 10 PM JST] 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 July 29, 10 PM] Sri Lankan White Sapphire 1.025ct Loose Stone with Certification Sale price¥35,800

[On sale July 26th at 10 PM] Nepali Kyanite 2.461ct Loose Stone Sale price¥12,800

[On sale July 28th at 10 PM] Cambodian Blue Zircon (Ratanakiri Blue) 1.360ct Loose Stone with Certificate Sale price¥18,800

[Listed as 12563489] Sri Lankan Blue Sapphire 0.636 ct Loose Stone Sale price¥39,800

[Listed as 12563731] Brazilian Indicolite Tourmaline 0.404 ct Loose Stone Sale price¥39,800

[Listed as 12563371] Zimbabwe Euclase 0.087ct Loose Gemstone Sale price¥19,800

Tanzanian Zircon 1.237 ct Loose Stone [Listing 12563381] Sale price¥15,800

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

Rainbow Lattice Sunstone from Australia 0.352ct Loose Stone [On sale July 18, 10 PM JST] Sale price¥8,800

[Sale on 7/19 at 10 PM] Brazilian Yellow Beryl 1.472 ct Loose Stone Sale price¥19,800

[On sale July 19 at 10 PM] Sri Lankan Uva Moonstone 0.974ct Loose Gemstone Sale price¥12,800

[Available 10 PM, July 22nd] Namibian Jeremejevite 0.140ct Loose Gemstone with Certificate Sale price¥33,800

[On Sale 10 PM, July 11] Brazilian Amphibole in Danburite, 1.361ct Loose Sale price¥14,800

[On sale July 11th at 10 PM] Brazilian Amphibole-in-Danburite 2.251ct Loose Stone with Japanese and German Identification Sale price¥29,800

[On sale July 18th at 10 PM] Brown Diamond 0.778ct Loose (FANCY BROWN, SI1) Sale price¥59,800

[Sales begin 10 PM JST, July 12] Malawi Moonstone 1.651 ct Loose Stone Sale price¥8,800

[On sale 7/14 at 10 PM JST] Malawi Moonstone 1.948ct Loose Gemstone Sale price¥8,800

[Sales start: 10 PM, July 14th] Malawi Moonstone (Malawi Moonstone) 3.158ct Loose Gemstone Sale price¥18,800

【On sale 7/16 10PM】Moonstone from Malawi (Malawi Moonstone) 2.102ct Loose Stone Sale price¥14,800

[Sales start 10 PM July 16] Malawi Moonstone (Malawi Moonstone) 1.747ct Loose Sale price¥8,800

[Listing No. 12563397] Brazilian Alexandrite 0.217 ct Loose Stone Sale price¥39,800

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.