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Sold out スモーキークォーツ 0.691ctルース
Sold out パイライトインクォーツ 34.864ctルース
Sold out トリフィライトインクォーツ 13.378ctルース
coming soon ガーデンクォーツ 23.495ctルース
Sold out [Koshu Precious Stones plusthree] Brazilian Garden Quartz 47.809ct Loose
Sold out [Sakura In-Cut] Sapphire from Ratnapura, Sri Lanka, 6.0mm/0.839ct Loose
Sold out Golden Hill Turquoise from Kazakhstan, 2.524ct Loose Stone
Sold out Golden Hill Turquoise from Kazakhstan, 2.882ct loose stone
Sold out Golden Hill Turquoise from Kazakhstan, 2.235ct loose stone
Sold out Anthill garnet from the USA (with forsterite) 0.578ct loose
Sold out Unmounted American Anthill Garnet, 4.0mm/0.269ct
Sold out American Anthill Garnet 5.0mm/0.641ct Loose
Sold out USA Ant Hill Garnet 4.0mm/0.277ct Loose Stone
Sold out US Oregon Sunstone, 1.640 ct, Loose
Sold out US Oregon Sunstone, 1.640 ct, Loose
Sold out 1.676ct loose Oregon sunstone from the United States
Sold out USA Oregon Sunstone 2.160ct Loose
Sold out USA Oregon Sunstone 1.869ct Loose
Sold out 0.628ct Pink Star Sapphire Loose Gemstone from Sri Lanka
coming soon チベット産バイカラーアンデシン 1.856ctルース
Sold out ジンバブエ産バイカラーユークレース 0.197ctルース
coming soon ベトナム産非加熱シルキーピンクサファイア 0.202ctルース
coming soon Myanmar orange jade (jade) 0.531ct loose
Sold out Blue tourmaline 0.369ct loose Japanese-German book
Sold out Lazurite in quartz 0.959ct loose
Sold out Lazurite in quartz 0.877ct loose
Sold out Lazurite in quartz 0.353ct loose
Sold out ブラジル産インペリアルトパーズ 0.359ctルース
Sold out ブラジル産インペリアルトパーズ 2.093ctルース
Sold out インド産カバンサイト 2.163ctルース
Sold out タンザニア産レピドライト 1.035ctルース
Sold out Mali Garnet (Grossular/Andradite Garnet) from Mali 0.359ct Loose Stone
Sold out Hessonite Garnet from Sri Lanka 0.681ct Loose
Sold out Hessonite Garnet from Sri Lanka 0.530ct Loose Gemstone
Sold out Tanzanian Almandine Garnet 0.586ct Loose
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.537ct Loose
Sold out Unheated Vietnamese Silky Pink Sapphire 0.291ct Loose Stone
Sold out 0.218ct Unheated Silky Pink Sapphire from Vietnam
Sold out 0.168ct Unheated Silky Pink Sapphire from Vietnam
Sold out Kunzite from Afghanistan 0.971ct loose stone
Sold out Tanzanian Mandarin Garnet Loose Stone 0.315ct
Sold out Mexican Water Opal 4.8mm/0.289ct Loose
Sold out Sri Lankan green zircon 0.312ct loose stone
Sold out Mexican fire opal 0.235ct loose (facet cut)
Sold out Russian Phenakite 0.615ct Loose Stone
Sold out Bekiri Blue Garnet (Color Change Garnet) from Madagascar 0.150ct Loose
Sold out Madagascar Bekily Blue Garnet (Color Change Garnet) 0.132ct Loose Stone
Sold out 0.915ct Loose Ludwigite in Peridot from Pakistan

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.