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0.5–1.0 ct

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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 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 [Yukinko Cut] Siberian Blue Quartz (Synthetic Quartz) 0.999ct Loose Stone
Sold out 0.745ct loose bicolor sapphire from Windsor, Tanzania
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 【12547478掲載】ヴァイオレットスピネル 0.776ctルース
Sold out メキシコ産ファイアオパール 0.564ct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 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 0.742ct Bicolor Kyanite Loose Stone from Nepal
Sold out Sweet Home Mine Rhodochrosite 0.677ct Loose Gemstone
Sold out Afghan Kunzite 0.606ct Loose Stone
Sold out Tanzanite 0.579ct loose stone from Tanzania
Sold out Madagascar Sphene 4.5mm/0.509ct Loose Gemstone
Sold out 0.933 ct loose Brazilian aventurine beryl
Sold out Pakistani vanadium sphene 0.759ct loose
Sold out オレゴンサンストーン 0.513ctルース
Sold out ミャンマー産バイカラースターサファイア 0.920ctルース
Sold out ブラジル産デュモルチェライトインクォーツ 0.852ctルース
Sold out スモーキークォーツ 0.691ctルース
Sold out [Sakura In-Cut] Sapphire from Ratnapura, Sri Lanka, 6.0mm/0.839ct Loose
Sold out Anthill garnet from the USA (with forsterite) 0.578ct loose
Sold out American Anthill Garnet 5.0mm/0.641ct Loose
Sold out 0.628ct Pink Star Sapphire Loose Gemstone from Sri Lanka
coming soon Myanmar orange jade (jade) 0.584ct loose
Sold out Myanmar orange jade (jade) 0.531ct loose
Sold out Lazurite in quartz 0.959ct loose
Sold out Lazurite in quartz 0.877ct loose
Sold out Brazilian indicolite tourmaline 0.674ct loose stone
Sold out Brazilian indicolite tourmaline 0.842ct 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 Kunzite from Afghanistan 0.971ct loose stone
Sold out Sri Lanka Blue Sapphire 5.0mm/0.552ct Loose Stone
Sold out Russian Phenakite 0.615ct Loose Stone
Sold out 0.915ct Loose Ludwigite in Peridot from Pakistan
Sold out 0.939 ct Loose Imperial Topaz from Brazil with Certificate
Sold out Loose 0.901ct Imperial Topaz from Brazil with certificate
Sold out Brazilian unheated pink imperial topaz (sherry pink) 0.594ct loose stone with certificate of authenticity
Sold out キャシテライト 0.571ctルース
Sold out Afghan Kunzite 5.6mm/0.897ct Loose
Sold out Loose Brazilian Medusa Quartz (Paraiba Quartz) 0.748ct
Sold out Tanzanite from Tanzania 0.730ct loose stone

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.