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Width: 3.1 - 4.0mm

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Sold out 【12562093掲載】ブラジル産デュモルチェライトインクォーツ 0.839ctルース
Sold out 【12562085掲載】ブラジル産デュモルチェライトインクォーツ 0.603ctルース
Sold out モンタナサファイア 0.458ctルース
Sold out American Neptunite 0.207ct Loose Stone with Certificate of Authenticity
Sold out 【12562061掲載】アメリカ産ネプチュナイト 0.256ctルース
Sold out American Neptunite 0.290ct Loose Stone with Certificate of Authenticity
Sold out ブラジル産デュモルチェライトインクォーツ 0.673ctルース
Sold out Brazilian Dumortierite in Quartz 0.463ct Loose Stone (Faceted Cut)
Sold out 【12561951掲載】アメリカ産アントヒルガーネット 0.370ctルース
Sold out Tanzanian Color Change Garnet 0.509ct Loose Stone
Sold out カンボジア産ブルージルコン(ラタナキリブルー) 0.519ctルース
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.354ct Loose Stone
Sold out Synthetic rutile 3.9mm/0.329ct loose stone
Sold out 【12561129掲載】スリランカ産イエローサファイア 0.291ctルース
Sold out Myanmar Red Spinel 0.196ct Loose Stone
Sold out Myanmar color change zircon 0.439ct loose stone
Sold out カラーチェンジジルコン 0.556ctルース
Sold out Pink sapphire (with hematite) 0.271ct loose stone
Sold out 【12552511掲載】ピンクダイヤモンド 0.296ctルース
Sold out Cornflower Blue Sapphire 0.370ct Loose AIGS
Sold out Sweet Home Mine Rhodochrosite 0.677ct Loose Gemstone
Sold out 0.336 ct Tanzanian Kornerupine Loose Gemstone
Sold out Ruby 3.3mm/0.171ct Loose
Sold out 0.316 ct Tanzanian Bicolor Grossular Garnet Loose Stone
Sold out U.S. Red Beryl 3.2mm/0.111ct Loose Stone
Sold out Grandidierite from Madagascar 0.269ct loose stone
Sold out Kenyan Tsavorite 0.347ct Loose Stone
Sold out Pigeon blood ruby ​​0.310ct loose
Sold out Pigeon's Blood Ruby 4.0mm/0.230ct Loose AIGS
Sold out Tanzanite from Tanzania 0.417ct Loose Gemstone
Sold out パパラチアサファイア 0.191ctルース
Sold out Anthill garnet from the USA (with forsterite) 0.578ct loose
Sold out Unmounted American Anthill Garnet, 4.0mm/0.269ct
Sold out USA Ant Hill Garnet 4.0mm/0.277ct 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 0.530ct Loose Gemstone
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.537ct Loose
Sold out 0.218ct Unheated Silky Pink Sapphire from Vietnam
Sold out Tanzanian Mandarin Garnet Loose Stone 0.315ct
Sold out Mexican fire opal 0.235ct loose (facet cut)
Sold out Bekiri Blue Garnet (Color Change Garnet) from Madagascar 0.150ct Loose
Sold out Brazilian unheated pink imperial topaz (sherry pink) 0.594ct loose stone with certificate of authenticity
Sold out Brazilian unheated pink imperial topaz (sherry pink) 0.438ct loose stone with certificate of authenticity
Sold out Colombian oil-free emerald 0.17ct loose GIA
Sold out Grandidierite from Madagascar 0.228ct loose stone
Sold out Brazilian Indicolite Tourmaline 0.342ct Loose

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.