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Under 1.0 ct

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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 Brazilian London Blue Topaz 0.641ct Loose
Sold out ピンクサファリン 0.178ctルース
Sold out パキスタン産ヴィータニエミアイト 0.184ctルース
Sold out 【12561913掲載】オーストラリア産ブラックオパール 0.221ctルース
Sold out German Auyinite 3.5mm/0.131ct Loose Stone
Sold out Brazilian Alexandrite 3.0mm/0.121ct Loose
Sold out Lazulite (0.077ct) from Pakistan, loose
Sold out German Hauyne 2.2mm/0.035ct Loose Stone
Sold out 【12561305掲載】アメリカ産オレゴンサンストーン 0.472ctルース
Sold out Sri Lankan green zircon 0.494ct loose stone
Sold out タンザニア産バイカラーゾイサイト 0.312ctルース
Sold out Myanmar Red Spinel 0.196ct Loose Stone
Sold out [Sakura In-Cut] Oregon Sunstone from the United States, 6.0mm/0.638ct Loose
Sold out オーストラリア産ブラックオパール 0.565ctルース
Sold out 【12561658掲載】タンザニア産タンザナイト 0.558ctルース
Sold out Tanzanite from Tanzania 0.331ct loose stone
Sold out Tanzanite 0.505ct loose stone from Tanzania
Sold out Brazilian Santa Maria Aquamarine 0.669ct Loose Stone
Sold out 奈良県天川村産レインボーガーネット(アンドラダイトガーネット) 0.989ctルース
Sold out 【12561507掲載】ブラジル産ラベンダークォーツ(スコロライト) 0.716ctルース
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 0.092ct loose stone with iolite and phlogopite (phlogopite)
Sold out Pink sapphire (with hematite) 0.271ct loose stone
Sold out Tanzanian Kornerupine (with Goethite) 2.6mm/0.068ct Loose
Sold out [Yukinko Cut] Siberian Blue Quartz (Synthetic Quartz) 0.999ct Loose Stone
Sold out Diamond rough (makeable) 0.353ct rough
Sold out Diamond rough (makeable) 0.279ct rough
Sold out 0.745ct loose bicolor sapphire from Windsor, Tanzania
Sold out Sri Lankan Forsterite 0.231ct Loose Stone, Japan-German
Sold out [Sakura Incut] Sphene from Madagascar 6.0mm/0.865ct Loose Stone
Sold out 奈良県天川村産レインボーガーネット(アンドラダイトガーネット) 0.639ctルース
Sold out American oil-free red beryl 2.6mm/0.050ct loose GIA
Sold out 【12552511掲載】ピンクダイヤモンド 0.296ctルース
Sold out 0.072 ct loose Bekily blue garnet (color-change garnet) from Madagascar
Sold out 0.076ct Loose Madagascar Bekily Blue Garnet (Color Change Garnet)
Sold out Russian Alexandrite 2.4mm/0.061ct Loose Stone
Sold out Mexican Fire Opal 0.281ct Loose
Sold out 【12547478掲載】ヴァイオレットスピネル 0.776ctルース
Sold out カンボジア産ブルージルコン(ラタナキリブルー) 0.615ctルース
Sold out Pakistani oil-in quartz 0.595ct loose
Sold out Andalusite 0.487ct loose
Sold out タンザニア産アンデシン・ラブラドライト(通称名 レインボームーンストーン) 0.928ctルース
Sold out Pink tourmaline 0.341ct loose
Sold out Tanzanite from Tanzania 4.5mm/0.390ct Loose Stone AIGS
Sold out Cornflower Blue Sapphire 0.370ct Loose AIGS

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.