coming soon

[10/18 22:00 Sale] Australian Boulder Opal 1.457ct Loose Sale price¥9,800

[10/18 22:00 Sale] 0.727ct Bicolor Sphalerite Loose Stone from Spain Sale price¥9,800

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） 0.439ctルース

[On Sale at 10 PM on October 18th] Rainbow Garnet (Andradite Garnet) 0.439ct Loose Stone from Tenkawa Village, Nara Prefecture Sale price¥8,800

[10/18 22:00 Sale] Brazilian London Blue Topaz 0.415ct Loose Sale price¥6,980

[10/19 22:00 Sale] Pakistani Sphene 0.396ct Loose Stone Sale price¥9,800

[10/19 22:00 Sale] Pakistani Sphene 0.489ct Loose Stone Sale price¥11,000

[10/19 22:00 Sale] German Auchenite 0.095ct Loose Stone Sale price¥39,800

インド産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.450ctルース

[On Sale at 10 PM on October 19th] Indian Andesine Labradorite (also known as Rainbow Moonstone) 0.450ct Loose Stone Sale price¥9,800

[10/19 22:00 Sale] German Auchenite 0.085ct Loose Stone Sale price¥45,800

K18YG アメリカ産オレゴンサンストーン 0.44ct・ピンクダイヤモンド・オレンジスピネルリング

[Available at 10:00 PM on October 19th] 18K Yellow Gold Ring with 0.44ct Oregon Sunstone from the United States, Pink Diamond, and Orange Spinel Sale price¥158,000

[On Sale 10/19 at 10 PM] [Limited to 10 stones] Spinel Gacha Loose Stone, Including 1.17ct Bicolor Spinel [Multiple Purchase Discounts Available] Sale price¥4,980

[On Sale at 10 PM on October 19th] Greenland Ruby 3.6mm/0.220ct Loose Stone with Certificate Sale price¥39,800

[On Sale at 10 PM on October 19th] Greenland Ruby 3.6mm/0.210ct Loose Stone with Certificate Sale price¥45,800

[On Sale at 10 PM on October 19th] Greenland Ruby 3.0mm/0.134ct Loose Stone with Certificate Sale price¥25,800

[12552081] Unheated Brazilian Paraiba Tourmaline 0.025ct Loose Stone Sale price¥29,800

[12552075] Unheated Brazilian Paraiba Tourmaline 0.037ct loose stone Sale price¥45,800

[12552074] Unheated Brazilian Paraiba Tourmaline 0.042ct Loose Stone Sale price¥59,800

[On sale from 10/18 at 10 PM] Limited to 10 stones: Greenland Ruby (2mm, with certificate from the mine owner) - Single loose stone [Multiple purchase discounts available] Sale price¥3,980

[10/19 22:00 Sale] American Benitoite 0.165ct Loose Stone Sale price¥59,800

【ゆきんこカット】YAG（イットリウムアルミニウムガーネット） 1.391ctルース鑑別書

[Available at 10:00 PM on October 19th] [Yukinko Cut] YAG (Yttrium Aluminum Garnet) 1.391ct Loose Stone with Certificate of Authenticity Sale price¥39,800

[On sale from 10/22 at 10pm] 18K Gold with 0.49ct Brazilian Paraiba Tourmaline Ring, GIA Sale price¥198,000

[On sale from 10/22 at 10pm] 18KPG pink sapphire 0.32ct brown diamond ring Sale price¥69,800

[On Sale at 10 PM on October 20th] Tanzanian Bicolor Zoisite 5.5mm/0.703ct Loose Stone Sale price¥12,800

[On Sale at 10pm on 10/22] Indian Iolite Sunstone 0.321ct Loose Sale price¥8,800

[On Sale at 10pm on 10/22] Indian Iolite Sunstone 0.228ct Loose Sale price¥6,980

[On Sale at 10pm on 10/22] Brazilian Amethyst 5.883ct Loose Sale price¥9,800

[On sale from 10/22 at 10 PM] Limited to 14 stones: Lab-grown diamond (cabochon cut, approximately 2.3mm) - 1 loose diamond [Multiple purchase discounts available] Sale price¥4,980

Taaffeite from Myanmar 0.580ct Ruth Japanese German edition Sale price¥39,800

Oregon Sunstone from the United States 2.731ct loose stone Sale price¥29,800

Brazilian bicolor tourmaline 1.056ct loose Sale price¥12,800

Rough diamond (makeable) 0.185ct loose (VS-SI) Sale price¥19,800

Brazilian bicolor tourmaline 1.148ct loose Sale price¥15,800

Brazilian bicolor tourmaline 0.877ct loose Sale price¥12,800

Rough diamond (makeable) 0.345ct loose (VS-SI equivalent) Sale price¥29,800

Sunstone (Illusion Sunstone) 0.844ct Loose Sale price¥8,800

Sunstone (Illusion Sunstone) 0.895ct loose stone Sale price¥8,800

[On Sale 10/23 10pm] Russian Demantoid Garnet (Horsetail Recognized) 0.061ct Loose Stone Sale price¥9,800

[On Sale at 10 PM on October 23rd] Russian Demantoid Garnet (Horsetail Certified) 0.064ct Loose Stone Sale price¥9,800

[On Sale at 10 PM on October 24th] Russian Demantoid Garnet (Horsetail Certified) 0.036ct Loose Stone Sale price¥6,980

[On Sale 10/23 10pm] Russian Demantoid Garnet (Horsetail Certified) 3.8mm/0.255ct Loose Stone Sale price¥39,800

[On Sale at 10pm on 10/23] 2.568ct Larimar Loose Stone from the Dominican Republic Sale price¥8,800

[On Sale at 10 PM on 10/23] Brazilian Color-Shifting Amethyst 0.849ct Loose Stone Sale price¥8,800

[On Sale at 10 PM on October 24th] Indian Chrysoberyl 0.424ct Loose Stone (Canary Yellow) Sale price¥15,800

[On Sale at 10pm on 10/23] Brazilian Aquamarine 0.334ct Loose Stone Sale price¥6,980

[On Sale at 10:00 PM on October 23rd] 1.052ct Rhodolite Garnet Loose Stone from Mozambique Sale price¥8,800

Parasitic Peridot 0.292ct Loose Stone Sale price¥98,000

[On Sale at 10 PM on 10/23] Brazilian Blue Topaz 5.5mm/0.754ct Loose Stone Sale price¥5,980

Prehnite 5.6mm/0.565ct loose Sale price¥3,980

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.