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Vertical: 4.1 - 5.0mm

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Sold out Myanmar color change zircon 0.439ct loose stone
Sold out Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture 4.8mm/0.612ct Loose
Sold out カラーチェンジジルコン 0.556ctルース
Sold out Sri Lankan Forsterite 0.231ct Loose Stone, Japan-German
Sold out Tanzanite from Tanzania 4.5mm/0.390ct Loose Stone AIGS
Sold out 0.336 ct Tanzanian Kornerupine Loose Gemstone
Sold out Indian Parrot Chrysoberyl 4.2mm/0.347ct Loose Stone
Sold out Afghan Kunzite 0.606ct Loose Stone
Sold out USA Oregon Sunstone 5.0mm/0.443ct Loose
Sold out Burmese Ice Jadeite, 0.408ct loose stone
Sold out Kenyan Tsavorite 0.347ct Loose Stone
Sold out Madagascar Sphene 4.5mm/0.509ct Loose Gemstone
Sold out Mexican Fire Opal (Faceted) 4.5mm/0.218ct Loose Stone
Sold out 0.628ct Pink Star Sapphire Loose Gemstone from Sri Lanka
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 Madagascar Purple Sapphire 4.2mm/0.418ct Loose
Sold out Mexican Water Opal 4.8mm/0.289ct Loose
Sold out Sri Lankan green zircon 0.312ct loose stone
Sold out Star Ruby from Sri Lanka, 5.0mm/1.062ct Loose Stone, with Identification Report
Sold out Grandidierite from Madagascar 0.228ct loose stone
Sold out 0.321ct Blue Sapphire Loose Gemstone from Sri Lanka
Sold out ジンバブエ産スフェーン 0.477ctルース
Sold out Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.491ct Loose Stone
Sold out 【12560350掲載】ジンバブエ産ユークレース 0.138ctルース
Sold out Rough diamond (sawable) 0.466ct rough diamond (with trigon)
Sold out Grandidierite from Madagascar 0.167ct loose stone
Sold out Grandidierite from Madagascar 0.169ct loose stone
Sold out Indian Parrot Chrysoberyl Cat's Eye 5.0mm/1.099ct Loose Stone
Sold out Unheated star ruby ​​from Myanmar, 0.617ct loose
Sold out Russian Demantoid Garnet (Horsetail) 4.2mm/0.325ct Loose Stone
Sold out Madagascar Bicolor Sapphire 4.5mm/0.637ct Loose
Sold out Madagascar Sapphire 4.6mm/0.472ct Loose
Sold out American peridot 0.334ct loose stone
Sold out ブルーサファイア 0.401ctルース
Sold out ロシア産ダイヤモンド原石(ソーヤブル) 0.509ct原石
Sold out インペリアルトパーズ 0.377ctルース
Sold out ブラジル産バイカラーユークレース 0.286ctルース
Sold out タンザニア産タンザナイト 0.482ctルース
Sold out ブラジル産アレキサンドライト 0.180ctルース  GIA
Sold out ベトナム産非加熱シルキーピンクサファイア 0.421ctルース
Sold out [Lottery Sale 14] [For Winners Only] [Listed at 12553490] Brazilian Alexandrite 0.30ct Loose Stone GIA
Sold out ブラジル産ブラジル産パライバトルマリン 0.211ctルース
Sold out ブラジル産パライバトルマリン 0.120ct《エイトリータ》ルース(CuO:2.0%、MnO:0.7%)
Sold out ナイジェリア産コバルトガーナイト 0.707ctルース
Sold out ブルガリア産グリーンスファレライト 0.403ctルース
Sold out ブラジル産パライバトルマリン 0.202ctルース

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.