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Items under 10,000 yen

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Limited to 4 stones: 1 Brazilian white topaz loose stone (average 2.1 carats) Multiple purchase discounts available

Limited to 4 stones: 1 Brazilian white topaz loose stone (average 2.1 carats) Multiple purchase discounts available Sale price¥2,980
Limited to 8 stones: 1 Mexican fire opal loose stone with unique color (up to 2.2ct) Multiple purchase discounts available

Limited to 8 stones: 1 Mexican fire opal loose stone with unique color (up to 2.2ct) Multiple purchase discounts available Sale price¥3,980
ガーデンクォーツ 8.690ctルース

Garden quartz 8.690ct loose Sale price¥2,980
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） 1.090ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.090ct loose stone Sale price¥9,800
スターガーネット 11.440ctルース（6条）

Indian Star Garnet 11.440ct Loose Stone (6 Rows) Sale price¥5,980
Limited to 13 stones Gem gacha💎 Beautiful colored tanzanite 7mm, special cut sphene, heliodor (lots of inclusions) 1 loose stone Multiple purchase discounts available

Limited to 13 stones Gem gacha💎 Beautiful colored tanzanite 7mm, special cut sphene, heliodor (lots of inclusions) 1 loose stone Multiple purchase discounts available Sale price¥4,980
モンタナアゲート 6.534ctルース

Montana Agate 6.534ct ​​Loose Stone Sale price¥6,980
オーストラリア産オパール 0.371ctルース

Australian Opal 0.371ct Loose Sale price¥8,800
オーストラリア産オパール 0.423ctルース

Australian Opal 0.423ct Loose Sale price¥6,980
オーストラリア産オパール 0.706ctルース

Australian Opal 0.706ct Loose Sale price¥8,800
オーストラリア産オパール 0.633ctルース

Australian Opal 0.633ct Loose Sale price¥9,800
ブラジル産デュモルチェライトインクォーツ 0.578ctルース

Brazilian Dumortierite in Quartz 0.578ct loose stone (faceted cut) Sale price¥5,980
ブラジル産デュモルチェライトインクォーツ 0.482ctルース

Brazilian Dumortierite in Quartz 0.482ct loose stone (faceted cut) Sale price¥5,980
ブラジル産デュモルチェライトインクォーツ 0.652ctルース

Brazilian Dumortierite in Quartz 0.652ct loose stone (faceted cut) Sale price¥9,800
ブラジル産デュモルチェライトインクォーツ 0.313ctルース

Brazilian Dumortierite in Quartz 0.313ct loose stone (faceted cut) Sale price¥6,980
ブラジル産デュモルチェライトインクォーツ 0.154ctルース

Brazilian Dumortierite in Quartz 0.154ct loose stone (faceted cut) Sale price¥9,800
ブラジル産グリーン・スポジュメン 1.943ctルース

Brazilian Green Spodumene 1.943ct Loose Stone Sale price¥9,800
ブラジル産グリーン・スポジュメン 0.599ctルース

Brazilian Green Spodumene 0.599ct Loose Stone Sale price¥4,980
Mali Garnet (Grossular/Andradite Garnet) 4.2mm/0.374ct Loose Stone with Certificate of Authenticity

Mali Garnet (Grossular/Andradite Garnet) 4.2mm/0.374ct Loose Stone with Certificate of Authenticity Sale price¥9,800
Limited to 6 stones: 1 Brazilian Santa Maria aquamarine (March birthstone, princess cut 2.5mm) Multiple purchase discounts available

Limited to 6 stones: 1 Brazilian Santa Maria aquamarine (March birthstone, princess cut 2.5mm) Multiple purchase discounts available Sale price¥2,980
Brazilian Euclase 5.0mm/0.492ct Loose Stone

Brazilian Euclase 5.0mm/0.492ct Loose Stone Sale price¥9,800
デュモルチェライトインクォーツ 55.207ct 原石

Brazilian Dumortierite in Quartz 55.207ct Rough Stone Sale price¥8,800
Book "Jewelry Origami" (Supervised by KARATZ / In cooperation with the University of Tokyo Origami Circle and Orist)

Book "Jewelry Origami" (Supervised by KARATZ / In cooperation with the University of Tokyo Origami Circle and Orist) Sale price¥1,540
Book "Small Jewels" (Author: Keiichiro Koyama / Planning cooperation with KARATZ)

Book "Small Jewels" (Author: Keiichiro Koyama / Planning cooperation with KARATZ) Sale price¥1,760
Book "Gemstone Encyclopedia" (KARATZ, editor: Keiichiro Koyama)

Book "Gemstone Encyclopedia" (KARATZ, editor: Keiichiro Koyama) Sale price¥2,640
ガーデンクォーツ 12.860ctルース

Brazilian Garden Quartz 15.7mm/12.860ct Loose Stone Sale price¥4,980
コロンビア産エメラルドキャッツアイ 0.078ctルース

Colombian emerald cat's eye 0.078ct loose Sale price¥6,980
Limited to 3 stones: Madeira citrine from Brazil (special cut, November birthstone) Multiple purchase discounts available

Limited to 3 stones: Madeira citrine from Brazil (special cut, November birthstone) Multiple purchase discounts available Sale price¥3,980
Limited to 3 stones: Brazilian Trapiche Amethyst (with mother rock) 1 loose stone (average 33ct, February birthstone) Multiple purchase discounts available

Limited to 3 stones: Brazilian Trapiche Amethyst (with mother rock) 1 loose stone (average 33ct, February birthstone) Multiple purchase discounts available Sale price¥3,980
メキシコ産ハイアライトオパール 0.304ctルース

Mexican Hyalite Opal 4.8mm/0.304ct Loose Stone Sale price¥9,800
モスアゲート 0.387ctルース

Indian Moss Agate 0.387ct Loose Stone Sale price¥8,800
モスアゲート 0.75ctルース

Indian Moss Agate 0.75ct Loose Stone Sale price¥8,800
モスアゲート 0.601ctルース

Indian Moss Agate 0.601ct Loose Stone Sale price¥8,800
モスアゲート 0.301ctルース

Indian Moss Agate 0.301ct Loose Stone (Princess Cut) Sale price¥6,980
モスアゲート 0.728ctルース

Indian Moss Agate 0.728ct Loose Stone (Princess Cut) Sale price¥9,800
モスアゲート 0.755ctルース

Indian Moss Agate 0.755ct Loose Stone (Princess Cut) Sale price¥8,800
ブラジル産デュモルチェライトインクォーツ 2.484ctルース

Brazilian Dumortierite in Quartz 2.484ct loose stone Sale price¥9,800
ブラジル産パイロープアルマンディンガーネット 0.925ctルース

Brazilian pyrope almandine garnet 0.925ct loose stone Sale price¥9,800
ブラジル産アクアマリン 0.546ctルース

Brazilian Aquamarine 0.546ct Loose Stone Sale price¥8,800
ブラジル産アクアマリン 0.499ctルース

Brazilian Aquamarine 0.499ct Loose Stone Sale price¥7,980
ブラジル産アクアマリン 0.362ctルース

Brazilian Aquamarine 0.362ct Loose Stone Sale price¥8,800
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） 0.303ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.303ct loose stone Sale price¥6,980
グリーンジルコン 0.543ctルース

Sri Lankan Green Zircon 4.6mm/0.543ct Loose Stone Sale price¥8,800
グリーンジルコン 0.344ctルース

Sri Lankan Green Zircon 4.0mm/0.344ct Loose Stone Sale price¥6,980
トルコ産ピンクダイアスポア 0.194ctルース

Turkish pink diaspore 0.194ct loose stone Sale price¥9,800
トルコ産ピンクダイアスポア 0.171ctルース

Turkish pink diaspore 0.171ct loose stone Sale price¥8,800
トルコ産ピンクダイアスポア 0.151ctルース

Turkish pink diaspore 0.151ct loose stone Sale price¥8,800
ブラジル産マデイラシトリン 0.867ctルース

Brazilian Madeira Citrine 0.867ct Loose Stone Sale price¥9,800

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.