Custom Cut

Kenyan Idocrase 0.650ct Loose Sale price¥12,800

Tibetan Andesine 0.348ct Loose Stone Sale price¥12,800

Australian Prehnite 2.779 ct Loose Stone Sale price¥12,800

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

USA origin Peridot, 0.496 ct, 2-stone matched pair, loose Sale price¥12,800

Tanzanian Mandarin Garnet 0.352ct Loose Stone Sale price¥18,800

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

Zimbabwean Sphene 2.520ct Loose Gemstone Sale price¥59,800

Kunzite from Afghanistan 23.634ct loose stone Sale price¥98,000

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

Sri Lankan Twin Star Sapphire 5.225ct Loose Sale price¥98,000

Sri Lankan triple star sapphire 1.743ct loose stone Sale price¥128,000

Sri Lankan Twin Star Sapphire 3.928ct Loose Sale price¥128,000

Canadian Ammolite 17.043ct Loose Stone Sale price¥49,800

Mexican Fire Agate 14.193ct Loose Stone Sale price¥69,800

Mexican Fire Agate 10.683ct Loose Stone Sale price¥59,800

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

[12/7 22:00] American Peridot 0.385ct Loose Stone Sale price¥8,800

[12/6 22:00] Mexican Fire Agate 17.936ct Loose Stone Sale price¥49,800

Synthetic quartz 0.430ct loose stone (synthetic green quartz) Sale price¥6,980

Brazilian rose quartz 4.019ct loose stone Sale price¥11,000

Brazilian rose quartz 1.848ct loose stone Sale price¥9,800

Sri Lankan Yellow Sapphire 0.170ct Loose Sale price¥12,800

Sri Lankan Yellow Sapphire 0.182ct Loose Sale price¥9,800

Sri Lankan Golden Sapphire 0.649ct Loose Sale price¥29,800

Synthetic sapphire 0.879ct loose stone (synthetic blue sapphire) Sale price¥14,800

Brazilian Rose Quartz 1.793ct Loose Stone Sale price¥9,800

Brazilian rose quartz 2.167ct loose stone Sale price¥9,800

Tanzanian Almandine Garnet 0.750ct Loose Stone Sale price¥9,800

1.705ct Australian Prehnite Loose Stone Sale price¥9,800

Synthetic rutile 5.1mm/0.893ct loose stone Sale price¥9,800

Brazilian rose amethyst 0.793ct loose stone Sale price¥15,800

0.200ct loose diamond (G, VVS2, radiant cut) Sale price¥29,800

Tanzanian Almandine Garnet 2.897ct Loose Stone Sale price¥22,800

Tanzanian Almandine Garnet 2.169 ct Loose Stone Sale price¥21,800

Mozambican Rhodolite Garnet 3.161ct Loose Sale price¥22,800

Tanzanian Rhodolite Garnet 2.081ct Loose Stone, Japan-Germany Exchange Sale price¥18,800

Tanzanian Rhodolite Garnet 5.3mm/0.903ct Loose Stone Sale price¥9,800

Tanzanian Sunstone 1.355ct Loose Stone Sale price¥8,800

Tanzanian Sunstone (Illusion Sunstone) 0.777ct Loose Stone Sale price¥12,800

Mexican Opal 0.233ct Loose (Faceted) Sale price¥12,800

Moldavite from the former Czechoslovakia, 0.095ct loose stone Sale price¥8,800

Brazilian citrine 1.962ct loose stone Sale price¥9,800

Brazilian citrine 1.659ct loose stone Sale price¥9,800

Brazilian citrine 1.644ct loose stone Sale price¥9,800

Brazilian Dumortierite in Quartz 1.414ct Loose Stone Sale price¥12,800

0.903ct loose labradorite from Madagascar Sale price¥9,800

Mexican Fire Opal 5.8mm/0.345ct 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'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.