Custom Cut

Pink sapphire 0.202ct loose stone Sale price¥8,800

Purple sapphire 0.199ct loose stone Sale price¥8,800

Yellow sapphire 0.229ct loose stone Sale price¥9,800

Spodumene 9.001ct loose stone Sale price¥29,800

Spodumene 9.730ct loose stone Sale price¥29,800

Andalusite 0.672ct loose Sale price¥12,800

Spanish Andalusite 0.435ct loose stone Sale price¥8,800

Almandine Garnet 1.255ct Loose Stone Sale price¥14,800

Mexican Opal 9.6mm/1.803ct Loose (Contralus Opal) Sale price¥69,800

[Koshu Precious Stones Plusthree] Rose Quartz 7.293ct Loose Sale price¥29,800

[Koshu Precious Stones plusthree] Citrine 5.121ct Loose Sale price¥39,800

[Koshu Precious Stones Plusthree] Tibetan Andesine 7.873ct [Collaboration] Loose Stone (Color Change Andesine) Sale price¥39,800

[Koshu Precious Stones plusthree] Watermelon Tourmaline 4.731ct Loose Stone Sale price¥39,800

[Koshu Precious Stones Plusthree] Lavender Quartz (Scorolite) 1.761ct Loose Stone Sale price¥39,800

Pakistani Oil in Quartz 1.337ct Loose Stone (Moving Bubbles) Sale price¥19,800

Pakistani Oil in Quartz 1.118ct Loose Stone (Moving Bubbles) Sale price¥25,800

[Mr. KEN] Brazilian aquamarine 1.071ct loose stone (phantom cut) Sale price¥9,800

[Mr. KEN] Brazilian aquamarine 0.874ct loose stone (phantom cut) Sale price¥8,800

[KEN] Brazilian Green Beryl 0.422ct Loose Sale price¥6,980

Benitoite 0.207ct loose stone Sale price¥39,800

Brazilian Dumortierite in Quartz 0.676ct loose stone Sale price¥8,800

Brazilian Dumortierite in Quartz 0.495ct loose stone Sale price¥5,980

Brazilian Dumortierite in Quartz 0.387ct loose stone Sale price¥5,980

Brazilian Dumortierite in Quartz 0.432ct Loose Stone Sale price¥6,980

Kenyan Tsavorite 0.379ct loose stone Sale price¥35,800

Tanzanite 1.004ct loose stone Sale price¥22,800

Green Zoisite 0.998ct Loose Stone Sale price¥22,800

Lavender Tanzanite 0.784ct loose stone Sale price¥14,800

[Mr. KEN] Topaz 0.950ct loose stone Sale price¥8,800

Mexican Fire Opal 1.833ct Loose Sale price¥49,800

Mexican Fire Opal 1.424ct Loose Sale price¥49,800

[KEN] White topaz 6.495ct loose stone (vortex cut) Sale price¥29,800

Myanmar Red Spinel 0.725ct Loose Sale price¥19,800

Pakistani Oil in Quartz 0.235ct Loose Stone Sale price¥8,800

Bicolor Fluorite 0.909ct Loose Sale price¥6,980

Bicolor fluorite 1.043ct loose stone Sale price¥6,980

Bicolor fluorite 1.332ct loose stone Sale price¥6,980

Green tourmaline 0.621ct loose stone Sale price¥9,800

Green tourmaline 0.457ct loose stone Sale price¥9,800

Diamond 0.320ct loose (D, VS2) Sale price¥79,800

[Cat cut] Dendritic agate 13.569ct loose stone Sale price¥12,800

[Cat cut] Dendritic agate 6.757ct loose stone Sale price¥12,800

[Cat cut] Dendritic agate 5.326ct loose stone Sale price¥12,800

[Rouge cut] Chalcedony 6.966ct loose stone Sale price¥12,800

[Rouge cut] Rhodolite garnet 0.410ct loose stone Sale price¥8,800

[Mr. Sanje] Synthetic moissanite 4.192ct loose stone Sale price¥25,800

Synthetic Moissanite 10mm/3.873ct Loose Stone 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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.

KARATZ・Five Commitments