Vertical: 5.1 - 6.0mm

Cambodian blue zircon 0.217ct loose Sale price¥6,980

Cambodian blue zircon 0.267ct loose Sale price¥6,980

Mali Garnet (Grossular/Andradite Garnet) 0.675ct Loose Stone Sale price¥15,800

[On sale May 6th, 10 PM] YAG (Yttrium Aluminum Garnet) 5.5mm/0.865ct Loose Stone with Certificate Sale price¥8,800

Unheated Pigeon Blood Ruby 0.380ct Loose Stone AIGS Sale price¥79,800

Spanish Sphalerite 5.7mm/0.903ct Loose Sale price¥16,800

Russian Demantoid Garnet (Horsetail) 5.8mm/0.851ct Loose Stone Sale price¥198,000

Synthetic rutile 5.1mm/0.877ct loose stone Sale price¥12,800

Mexican Opal 0.353ct Loose (Faceted Cut) Sale price¥9,800

Tanzanian Rhodolite Garnet 0.763ct Loose Stone Sale price¥9,800

American Peridot 0.643ct Loose Stone Sale price¥12,800

Tanzanian Color Change Garnet 0.607ct Loose Stone Sale price¥11,000

Synthetic Blue Sapphire 0.886ct Loose (Synthetic Sapphire) Sale price¥8,800

Synthetic Rutile 0.768ct Loose Sale price¥12,800

US-sourced Oregon Sunstone 0.428ct Loose Sale price¥18,800

Mexican Fire Opal 0.459ct Loose Sale price¥18,800

YAG (Yttrium Aluminum Garnet) 0.598ct loose stone Sale price¥9,800

Colombian mint-color emerald, 5.1mm/0.517ct loose stone Sale price¥12,800

Zimbabwean Apatite (UV Type) 0.703ct Loose Stone Sale price¥7,980

Russian Demantoid Garnet (Horsetail Recognized) 5.1mm/0.664ct Loose Stone Sale price¥188,000

[Sakura Incut] Sphene from Madagascar 6.0mm/0.865ct Loose Stone Sale price¥49,800

Madagascar Pezzottaite 0.670ct Loose Stone, Japan-Germany Scale Sale price¥298,000

0.451 ct loose Colombian emerald Sale price¥39,800

Brown Diamond 5.2mm/0.561ct Loose (FANCY DARK BROWN, SI2) Sale price¥29,800

0.742ct Bicolor Kyanite Loose Stone from Nepal Sale price¥18,800

Mexican Fire Opal 0.362ct Loose Sale price¥15,800

Cambodian blue zircon 1.126ct loose stone Sale price¥18,800

Tanzanian Zoisite 5.5mm/0.689ct Loose Sale price¥18,800

Tibetan Andesine 0.320ct Loose Stone Sale price¥9,800

Tanzanian Lavender Tanzanite 0.391ct Loose Stone Sale price¥12,800

Brazilian Sunstone 5.1mm/0.532ct Loose Stone (Rose Quartz) Sale price¥5,980

Tanzanian Green Zoisite 0.354ct Loose Stone Sale price¥12,800

Blue Sapphire 5.0mm/0.552ct Loose Stone Sale price¥18,800

Mexican Fire Opal 0.191ct Loose (Faceted Cut) Sale price¥12,800

Tanzanite from Tanzania 0.436ct loose stone Sale price¥8,800

Sri Lankan Bicolor Sapphire 0.607ct Loose Stone Sale price¥15,800

Brazilian Santa Maria Aquamarine 0.524ct Loose Stone Sale price¥55,800

Oregon Sunstone from the United States, 5.0mm/0.520ct loose stone Sale price¥15,800

Tanzanite from Tanzania 0.680ct loose stone Sale price¥15,800

Sri Lankan bicolor sapphire 0.586ct loose stone Sale price¥39,800

Myanmar color change zircon 0.697ct loose stone Sale price¥39,800

0.604ct rough diamond Sale price¥12,800

Myanmar Color Change Zircon 5.3mm/1.043ct Loose Stone Sale price¥69,800

Brazilian Dumortierite in Quartz 0.382ct Loose Stone Sale price¥9,800

Mexican Water Opal (Faceted) 0.215ct Loose (Contrarus Opal) Sale price¥18,800

Sri Lankan Sinhalite 0.434ct Loose Stone Sale price¥8,800

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

[12/7 22:00 Sale] Mexican Egg-in Opal 0.381ct Loose Sale price¥18,800

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.