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Sold out Pakistani oil-in quartz 0.595ct loose

Pakistani oil-in quartz 0.595ct loose
Sold out Andalusite 0.487ct loose

Andalusite 0.487ct loose
Sold out マダガスカル産オイルインクォーツ 31.973ct原石

Oil-in-quartz 31.973ct rough stone from Madagascar
Sold out Pink tourmaline 0.341ct loose

Pink tourmaline 0.341ct loose

Sold out Afghan Kunzite 0.606ct Loose Stone

Afghan Kunzite 0.606ct Loose Stone
Sold out Burmese Ice Jadeite, 0.408ct loose stone

Burmese Ice Jadeite, 0.408ct loose stone
Sold out Madagascar Sphene 4.5mm/0.509ct Loose Gemstone

Madagascar Sphene 4.5mm/0.509ct Loose Gemstone
Sold out 0.933 ct loose Brazilian aventurine beryl

0.933 ct loose Brazilian aventurine beryl
Sold out Loose Oregon Sunstone from the USA, 0.318ct

Loose Oregon Sunstone from the USA, 0.318ct
Sold out Afghanistan Lapis Lazuli 11mm/5.263ct Loose Stone

Afghanistan Lapis Lazuli 11mm/5.263ct Loose Stone
Sold out オレゴンサンストーン 0.513ctルース

Oregon Sunstone 0.513ct loose
Sold out Bicolor tourmaline 3.242ct rough stone from Afghanistan

Bicolor tourmaline 3.242ct rough stone from Afghanistan
Sold out ザンビア産アメジスト 39.112ct原石

Amethyst 39.112ct raw stone from Zambia
Sold out ザンビア産アメジスト 29.357ct原石

Amethyst 29.357ct raw stone from Zambia
Sold out フィンランド産ラブラドライト（スペクトロライト） 6.335ctルース

Labradorite (Spectrolite) from Finland 6.335ct loose
Sold out フィンランド産ラブラドライト（スペクトロライト） 5.261ctルース

Labradorite (Spectrolite) from Finland 5.261ct loose
Sold out タンザニア産コーネルピン 0.173ctルース

Cornell pin from Tanzania 3.5mm/0.173ct loose
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

Brazilian dumortierite in quartz 6mm/0.852ct loose
Sold out カザフスタン産ストロベリークォーツ 1.536ctルース

Strawberry quartz from Kazakhstan 1.536ct loose
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） 1.119ctルース

Rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture 1.119ct loose
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） 1.447ctルース

Rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture 1.447ct loose
Sold out トリフィライトインクォーツ 13.378ctルース

Triphyllite in quartz 13.378ct loose
coming soon ガーデンクォーツ 23.495ctルース

Garden quartz 23.495ct loose Sale price¥3,980
Sold out [Limited to 24 stones] Oregon Sunstone from America with beautiful Schiller (Oval cut, 5 x 7mm) [Multiple purchase discount available]

[Limited to 24 stones] Oregon Sunstone from America with beautiful Schiller (Oval cut, 5 x 7mm) [Multiple purchase discount available]

Sold out Native Copper (1 rough stone) (average 22 carats) {Multiple purchase discounts available}

Native Copper (1 rough stone) (average 22 carats) {Multiple purchase discounts available}
Sold out Fun Gem Gacha! 💎 Get diamonds (normally 29,800 yen) (D/VS/3EX H&C with Medium Certificate), special cut Oresund and Unloved, and more! (Multiple purchase discounts available)

Fun Gem Gacha! 💎 Get diamonds (normally 29,800 yen) (D/VS/3EX H&C with Medium Certificate), special cut Oresund and Unloved, and more! (Multiple purchase discounts available)

Sold out Golden Hill Turquoise from Kazakhstan, 2.524ct Loose Stone

Golden Hill Turquoise from Kazakhstan, 2.524ct Loose Stone
Sold out Golden Hill Turquoise from Kazakhstan, 2.882ct loose stone

Golden Hill Turquoise from Kazakhstan, 2.882ct loose stone
Sold out Golden Hill Turquoise from Kazakhstan, 2.235ct loose stone

Golden Hill Turquoise from Kazakhstan, 2.235ct loose stone
Sold out Unmounted American Anthill Garnet, 4.0mm/0.269ct

Unmounted American Anthill Garnet, 4.0mm/0.269ct
Sold out USA Ant Hill Garnet 4.0mm/0.277ct Loose Stone

USA Ant Hill Garnet 4.0mm/0.277ct Loose Stone
Sold out ベトナム産非加熱シルキーピンクサファイア 0.202ctルース

Unheated silky pink sapphire from Vietnam 0.202ct loose

coming soon Myanmar orange jade (jade) 0.584ct loose

Myanmar orange jade (jade) 0.584ct loose Sale price¥4,980
Sold out Myanmar orange jade (jade) 0.531ct loose

Myanmar orange jade (jade) 0.531ct loose

Sold out Blue tourmaline 0.369ct loose Japanese-German book

Blue tourmaline 0.369ct loose Japanese-German book

Sold out Lazurite in quartz 0.353ct loose

Lazurite in quartz 0.353ct loose

Sold out インド産カバンサイト 2.163ctルース

Indian bag site 2.163ct loose
Sold out タンザニア産レピドライト 1.035ctルース

Lepidolite from Tanzania 1.035ct Ruth Japanese German edition
Sold out デュモルチェライトインクォーツ 3.814ct原石

Brazilian dumortierite in quartz 3.814ct raw stone

Sold out Mali Garnet (Grossular/Andradite Garnet) from Mali 0.359ct Loose Stone

Mali Garnet (Grossular/Andradite Garnet) from Mali 0.359ct Loose Stone
Sold out Hessonite Garnet from Sri Lanka 0.681ct Loose

Hessonite Garnet from Sri Lanka 0.681ct Loose
Sold out Hessonite Garnet from Sri Lanka 0.530ct Loose Gemstone

Hessonite Garnet from Sri Lanka 0.530ct Loose Gemstone
Sold out Tanzanian Almandine Garnet 0.586ct Loose

Tanzanian Almandine Garnet 0.586ct Loose
Sold out 0.168ct Unheated Silky Pink Sapphire from Vietnam

0.168ct Unheated Silky Pink Sapphire from Vietnam
Sold out Sri Lankan green zircon 0.312ct loose stone

Sri Lankan green zircon 0.312ct loose stone
Sold out Bekiri Blue Garnet (Color Change Garnet) from Madagascar 0.150ct Loose

Bekiri Blue Garnet (Color Change Garnet) from Madagascar 0.150ct Loose
Sold out Madagascar Bekily Blue Garnet (Color Change Garnet) 0.132ct Loose Stone

Madagascar Bekily Blue Garnet (Color Change Garnet) 0.132ct Loose Stone
Sold out パキスタン産オイルインクォーツ 0.325ctルース

Pakistani oil-in quartz 0.325ct loose (facet cut, bubble moving type)

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.