Round Cut

[On Sale 2/6 at 10 PM] Oil-Free Red Beryl from the United States, 2.6mm/0.050ct Loose, GIA Sale price¥79,800

[On Sale at 10 PM on February 5th] Tanzanite from Tanzania, 4.5mm/0.390ct Loose Stone, AIGS Sale price¥18,800

[12561430] Unheated Pigeon Blood Ruby 0.510ct Loose Sale price¥98,000

[12561429] Unheated Pigeon Blood Ruby 0.520ct Loose Sale price¥128,000

[On Sale 2/4 at 10pm] Indian Parrot Chrysoberyl 4.5mm/0.375ct Loose Stone Sale price¥15,800

[On Sale 2/4 at 10pm] Indian Parrot Chrysoberyl 4.2mm/0.347ct Loose Stone Sale price¥12,800

[On sale at 10pm on 2/4] Ruby 3.3mm/0.171ct Loose Sale price¥39,800

Tanzanite 0.311ct loose stone from Tanzania Sale price¥12,800

Tanzanian Rhodolite Garnet 4.174ct Loose Stone Sale price¥29,800

Tanzanian Rhodolite Garnet 4.393ct Loose Stone Sale price¥29,800

[12560419] Cambodian Blue Zircon 1.962ct Loose Sale price¥39,800

[On Sale 2/2 at 10pm] Colombian Emerald 3.1mm/0.093ct Loose Sale price¥22,800

[Sakura In-Cut] 6.0mm/0.839ct Loose Sapphire from Ratnapura, Sri Lanka [Available at 10 PM on January 24th] Sale price¥59,800

[Sakura In-Cut] South African Rhodochrosite 7.6mm/1.544ct Loose Stone from Japan and Germany Sale price¥158,000

[On Sale at 10 PM on January 31st] American Anthill Garnet 5.0mm/0.641ct Loose Stone Sale price¥15,800

[On Sale at 10 PM on January 31st] American Anthill Garnet 4.0mm/0.277ct Loose Stone Sale price¥6,980

[On Sale at 10 PM on January 29th] Madagascar Purple Sapphire 4.2mm/0.418ct Loose Sale price¥19,800

[On Sale at 10 PM on January 23rd] Zimbabwean Sphene 7.0mm/1.661ct Loose Stone Sale price¥59,800

[On sale at 10pm on January 25th] Blue Sapphire 5.0mm/0.552ct Loose Sale price¥18,800

[On Sale at 10 PM on January 29th] Mexican Water Opal 4.8mm/0.289ct Loose Sale price¥18,800

[On Sale at 10 PM on January 25th] Russian Demantoid Garnet (Horsetail Certified) 2.6mm/0.096ct Loose Stone Sale price¥22,800

[On Sale at 10 PM on January 21st] Rainbow Garnet (Andradite Garnet) 6.7mm/1.488ct Loose Stone from Tenkawa Village, Nara Prefecture Sale price¥12,800

[On Sale at 10 PM on January 21st] Cassiterite 4.0mm/0.571ct Loose Stone with Certificate of Authenticity Sale price¥14,800

[Sale at 10 PM on January 12th] [Sakura In-Cut] Tanzanite from Tanzania, 6.0mm/0.774ct Loose Stone Sale price¥69,800

[On Sale at 10 PM on January 11th] Myanmar Color Change Zircon 0.697ct Loose Sale price¥39,800

[On Sale at 10 PM on January 11th] Myanmar Color Change Zircon 5.3mm/1.043ct Loose Stone Sale price¥69,800

[Available at 10 PM on January 10th] Cornflower Blue Sapphire 4.5mm/0.430ct Loose Stone AIGS Sale price¥98,000

Zimbabwean Euclase 2.2mm/0.065ct Loose Stone Sale price¥14,800

Colombian emerald 3.3mm/0.131ct loose stone Sale price¥25,800

Pigeon Blood Ruby 5.0mm/0.580ct Loose Stone AIGS Sale price¥128,000

[On Sale at 10 PM on January 9th] German Auchenite 2.7mm/0.076ct Loose Stone Sale price¥29,800

Russian Demantoid Garnet (Horsetail) 4.2mm/0.325ct Loose Stone Sale price¥59,800

American Peridot 5.1mm/0.573ct Loose Stone Sale price¥9,800

Mali Garnet (Grossular/Andradite Garnet) 0.741ct Loose Stone from the Republic of Mali with Certificate of Authenticity Sale price¥25,800

[Available at 10 PM on January 19th] [Dandelion Cut] Tibetan Color-Change Andesine 8.0mm/1.883ct Loose Stone Sale price¥59,800

[Available at 10 PM on January 5th] [Dandelion Cut] Tibetan Andesine 6.0mm/0.814ct Loose Stone Sale price¥49,800

[Available at 10 PM on January 5th] [Dandelion Cut] Tibetan Bicolor Andesine 6.0mm/0.791ct Loose Stone (Color Change Type) Sale price¥49,800

[Sale at 10 PM on January 5th] [Sakura In-Cut] Mongolian Color Change Andesine 6.0mm/0.655ct Loose Stone Sale price¥49,800

[On Sale at 10 PM on January 16th] Madagascar Sphene 6.0mm/0.868ct Loose Stone Sale price¥49,800

Sold out

[Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.685ct Loose Stone

Madagascar Bicolor Sapphire 5.8mm/1.006ct Loose Sale price¥12,800

Russian Demantoid Garnet (Horsetail) 3.8mm/0.249ct Loose Stone Sale price¥39,800

American oil-free red beryl 2.5mm/0.050ct loose GIA Sale price¥59,800

Mozambique Ruby 3.4mm/0.139ct Loose Stone Sale price¥25,800

Tanzanian Almandine Garnet 11.0mm/6.787ct Loose Stone Sale price¥49,800

[1/4 22:00 Sale] Tanzanian Almandine Garnet 10mm/6.196ct Loose Stone Sale price¥29,800

Tanzanian Almandine Garnet 6.5mm/1.071ct Loose Stone Sale price¥11,000

Russian Demantoid Garnet (Horsetail) 3.3mm/0.162ct 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.