Oval Cut

【8/24 22時販売】スリランカ産サファリン 0.466ctルース鑑別書 Sale price¥37,800

[Published on 12560214] Unheated Ruby 0.680ct Loose Sale price¥88,800

[On Sale at 10 PM on August 17th] Tanzanian Golden Zircon 3.548ct Loose Stone Sale price¥39,800

[On Sale at 10 PM on August 16th] Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.764ct Loose Stone Sale price¥12,800

[On Sale at 10 PM on August 16th] Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.309ct Loose Stone Sale price¥9,800

[On sale at 10pm on August 9th] Zimbabwean sphene 0.354ct loose stone Sale price¥6,980

[On Sale at 10 PM on August 20th] Mexican Fire Opal (Faceted) 0.515ct Loose Sale price¥12,800

マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.295ctルース

[Available at 10 PM on August 22nd] Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.295ct Loose Stone Sale price¥8,800

[On Sale at 10 PM on August 9th] Madagascar Grandidierite 0.066ct Loose Stone Sale price¥14,800

[8/12 22:00 Sale] Madagascar Grandidierite 0.169ct Loose Stone Sale price¥15,800

[On sale at 10pm on August 14th] Alexandrite 0.272ct loose stone Sale price¥59,800

[8/10 22:00 Sale] Brazilian Lepidocrocite in Quartz 0.953ct Loose Stone Sale price¥7,980

[On sale at 10pm on August 13th] Zimbabwean sphene 0.441ct loose stone Sale price¥8,800

[On Sale at 10 PM on August 5th] Afghanistan Hackmanite 0.761ct Loose Stone (Bicolor) Sale price¥39,800

[8/11 22:00 Sale] Tanzanian Rhodolite Garnet 0.734ct Loose Stone Sale price¥6,980

[On Sale at 10 PM on August 7th] Tanzanian Kornerupine 0.219ct Loose Stone Sale price¥29,800

[8/11 22:00 Sale] Tanzanian Kornerupine 0.084ct Loose Stone Sale price¥22,800

[Available at 10 PM on August 16th] Cambodian Blue Zircon (Ratanakiri Blue) 2.607ct Loose Stone Sale price¥59,800

[Available at 10 PM on August 15th] Cambodian Blue Zircon (Ratanakiri Blue) 0.529ct Loose Stone Sale price¥18,800

[Available at 10 PM on August 15th] Cambodian Blue Zircon (Ratanakiri Blue) 0.484ct Loose Stone Sale price¥12,800

Sri Lankan saffron 0.320ct loose stone with certificate of authenticity Sale price¥29,800

Tanzanian Dragon Garnet 0.746ct Loose Stone Sale price¥17,800

[On Sale at 10 PM on August 17th] Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.338ct Loose Stone Sale price¥8,800

[On Sale at 10 PM on August 17th] Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.301ct Loose Stone Sale price¥8,800

[On Sale at 10 PM on August 17th] Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.298ct Loose Stone Sale price¥8,800

American Benitoite 0.158ct loose stone Sale price¥59,800

American Benitoite 0.296ct loose stone Sale price¥148,000

[Available at 10 PM on August 17th] Zimbabwean Euclase 0.129ct Loose Stone with Certificate of Authenticity Sale price¥29,800

Namibian Yellow Grossular Garnet 0.215ct Loose Stone with Certificate of Authenticity Sale price¥18,800

Bicolor sapphire 0.970ct loose stone Sale price¥25,800

Sri Lankan bicolor sapphire 1.396ct loose stone Sale price¥39,800

Brazilian Paraiba tourmaline 0.171ct loose stone (CuO: 1.7%, MnO: 2.3%) Sale price¥98,000

Brazilian bicolor tourmaline 13.927ct loose stone Sale price¥198,000

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） 0.134ctルース

Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.134ct Loose Stone Sale price¥6,980

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） 0.152ctルース

Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.152ct Loose Stone Sale price¥8,800

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） 0.104ctルース

Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.104ct Loose Stone Sale price¥7,980

Brazilian chlorite in quartz 27.725ct loose stone Sale price¥19,800

Brazilian bicolor tourmaline 1.032ct loose stone Sale price¥25,800

Brazilian bicolor tourmaline 1.255ct loose stone Sale price¥25,800

Brazilian pink tourmaline 0.918ct loose stone Sale price¥9,800

Brazilian Pink Tourmaline 1.045ct Loose Stone Sale price¥9,800

Mexican Fire Opal 1.348ct Loose Sale price¥15,800

Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.375ct Loose Stone Sale price¥18,800

Brazilian Swiss Blue Topaz 1.395ct Loose Sale price¥8,800

German Awinite 0.093ct loose stone Sale price¥29,800

Kunzite from Afghanistan 4.992ct loose stone Sale price¥15,800

Madagascar Aquamarine 0.709ct Loose Stone Sale price¥18,800

Pakistani Lazurite (Azurite) 0.034ct loose stone Sale price¥12,800

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の取り組みと社会貢献

業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。

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.