Less than 0.5ct

[11/1 22:00 Sale] Tasmanian Crocoite 0.292ct Loose Stone, Japan-Germany Qualification Sale price¥79,800

Sri Lankan blue sapphire 0.187ct loose stone Sale price¥29,800

American Peridot 0.283ct Loose Stone Sale price¥8,800

Zimbabwean Bicolor Euclase 0.196ct Loose Stone Sale price¥45,800

Zimbabwean Bicolor Euclase 0.206ct Loose Stone Sale price¥49,800

Tanzanian Zoisite 0.473ct Loose Stone Sale price¥9,800

Madagascar Bicolor Sapphire 0.266ct Loose Sale price¥16,800

[12559763] Zimbabwean sphene 0.400ct loose stone Sale price¥9,800

[12559448] Mexican Opal 0.233ct Loose Sale price¥12,800

[12559446] Tanzanian Kornerupine 0.241ct Loose Stone Sale price¥45,800

Colombian emerald 0.121ct loose stone Sale price¥12,800

American Benitoite 0.071ct loose stone Sale price¥12,800

[11/2 22:00] Brazilian mint-colored emerald 0.491ct loose stone Sale price¥15,800

[On Sale 11/1 at 10pm] Tanzanian Kornerupine 0.324ct Loose Stone Sale price¥29,800

[On Sale 11/1 at 10pm] Madagascar Bicolor Sapphire 0.318ct Loose Sale price¥25,800

[12559942] Tourmaline 0.486ct loose stone Sale price¥29,800

[12559941] Tourmaline 0.314ct loose stone Sale price¥22,800

Unheated ruby 0.430ct loose Sale price¥98,000

Nigerian Cobalt Garnite 0.152ct Loose Stone Sale price¥45,800

Nigerian Cobalt Garnite 0.171ct Loose Stone Sale price¥49,800

[12559637] Colombian emerald 0.176ct loose stone Sale price¥59,800

[12559636] Colombian emerald 0.126ct loose stone Sale price¥49,800

[On Sale at 10 PM on October 31st] Tanzanian Bicolor Sapphire 0.486ct Loose Sale price¥12,800

[On Sale at 10 PM on October 31st] Russian Demantoid Garnet (Horsetail Recognized) 0.110ct Loose Sale price¥49,800

[On Sale at 10 PM on October 31st] Russian Demantoid Garnet (Horsetail Certified) 0.256ct Loose Stone Sale price¥79,800

[12560827] Russian Alexandrite 0.111ct Loose Stone Sale price¥69,800

[12560826] Russian Alexandrite 0.167ct Loose Stone Sale price¥98,000

[12560823] Russian Alexandrite 0.083ct Loose Stone Sale price¥69,800

[12560822] Russian Alexandrite 0.074ct Loose Stone Sale price¥59,800

[12560820] Russian Alexandrite 0.049ct Loose Stone Sale price¥49,800

[12560819] Russian Alexandrite 0.070ct Loose Stone Sale price¥59,800

[10/31 22:00 Sale] German Auchenite 0.063ct Loose Stone Sale price¥29,800

[10/31 22:00 Sale] German Auchenite 0.073ct Loose Stone Sale price¥32,800

[On Sale at 10pm on October 31st] Madagascar Grandidierite 0.168ct Loose Stone Sale price¥35,800

[11/1 22:00 Sale] Tanzanian Spessartine Garnet 0.383ct Loose Stone Sale price¥12,800

[11/1 22:00 Sale] Zimbabwean Bicolor Euclase 0.398ct Loose Stone Sale price¥39,800

[12558291] Tibetan Andesine 0.361ct Loose Stone Sale price¥8,800

[12558204] Oregon Sunstone from the United States, 0.478ct Loose Sale price¥8,800

[On Sale at 10 PM on October 29th] Brazilian Indigolite Tourmaline 0.222ct Loose Stone with Certificate of Authenticity Sale price¥11,000

[On Sale at 10 PM on October 29th] Mexican Fire Opal 5.8mm/0.345ct Loose Sale price¥12,800

[On Sale at 10 PM on 10/28] Mexican Fire Opal 4.8mm/0.199ct Loose Sale price¥8,800

[On Sale at 10:00 PM on October 28th] 0.090ct Loose Moldavite from the Former Czechoslovakia Sale price¥9,800

[On Sale at 10pm on 10/29] Tanzanian Mint Diopside 0.290ct Loose Stone Sale price¥9,800

[On Sale at 10pm on 10/29] Tanzanian Mint Diopside 0.364ct Loose Stone Sale price¥9,800

[On Sale at 10pm on 10/28] Brazilian Kasharai Amethyst 0.266ct Loose Stone Sale price¥7,980

[On Sale at 10 PM on October 28th] Brazilian Kasharai Amethyst 5.6mm/0.460ct Loose Stone Sale price¥8,800

[12559382] 0.176ct loose gemstone from Namibia Sale price¥39,800

Rough diamond (makeable) 0.185ct loose (VS-SI) 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.