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Sold out Myanmar color change zircon 0.439ct loose stone

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

Burmese color-change zircon 0.556 ct loose

Sold out Pink sapphire (with hematite) 0.271ct loose stone

Pink sapphire (with hematite) 0.271ct loose stone

Sold out [Sakura InCut] Synthetic Sapphire 2.610ct Loose Stone (Synthetic Pink Sapphire)

[Sakura InCut] Synthetic Sapphire 2.610ct Loose Stone (Synthetic Pink Sapphire)

Sold out [Yukinko Cut] Synthetic Sapphire 2.102ct Loose Stone

[Yukinko Cut] Synthetic Sapphire 2.102ct Loose Stone

Sold out Silky sapphire from Vietnam, 1.169ct loose stone

Silky sapphire from Vietnam, 1.169ct loose stone

Sold out 0.745ct loose bicolor sapphire from Windsor, Tanzania

0.745ct loose bicolor sapphire from Windsor, Tanzania

Sold out Sri Lankan Cobalt Spinel (Blue Spinel) 3.202ct Loose Stone (Needle-like Inclusions) Japan-German Rare Stone

Sri Lankan Cobalt Spinel (Blue Spinel) 3.202ct Loose Stone (Needle-like Inclusions) Japan-German Rare Stone

Sold out Oregon Sunstone from the United States, 8.338ct loose stone

Oregon Sunstone from the United States, 8.338ct loose stone
Sold out [Sakura Shape] Oregon Sunstone from the United States, 1.224ct Loose

[Sakura Shape] Oregon Sunstone from the United States, 1.224ct Loose
Sold out 【12547478掲載】ヴァイオレットスピネル 0.776ctルース

Myanmar Violet Spinel 0.776ct Loose

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

Cambodian blue zircon (Ratanakiri blue) 0.615ct loose

Sold out Pt950 Bicolor Sapphire Pendant Top (Necklace Top)

Pt950 Bicolor Sapphire Pendant Top (Necklace Top)

Sold out Cornflower Blue Sapphire 0.370ct Loose AIGS

Cornflower Blue Sapphire 0.370ct Loose AIGS
Sold out USA Oregon Sunstone 5.0mm/0.443ct Loose

USA Oregon Sunstone 5.0mm/0.443ct Loose
Sold out Madagascar Sphene 4.5mm/0.509ct Loose Gemstone

Madagascar Sphene 4.5mm/0.509ct Loose Gemstone
Sold out パパラチアサファイア 0.191ctルース

Padparadscha sapphire 0.191ct 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 1.676ct loose Oregon sunstone from the United States

1.676ct loose Oregon sunstone from the United States
Sold out USA Oregon Sunstone 1.869ct Loose

USA Oregon Sunstone 1.869ct Loose
Sold out 0.628ct Pink Star Sapphire Loose Gemstone from Sri Lanka

0.628ct Pink Star Sapphire Loose Gemstone from Sri Lanka
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.537ct Loose

Cambodian Blue Zircon (Ratanakiri Blue) 0.537ct Loose
Sold out 0.218ct Unheated Silky Pink Sapphire from Vietnam

0.218ct Unheated Silky Pink Sapphire from Vietnam
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 [Koshu Precious Stones plusthree] Spanish Sphalerite 6.417ct Loose Stone

[Koshu Precious Stones plusthree] Spanish Sphalerite 6.417ct Loose Stone

Sold out 【12546496掲載】ベトナム産非加熱シルキーピンクサファイア 0.161ctルース

Unheated silky pink sapphire from Vietnam 0.161ct loose
Sold out Unheated Madagascar Purple Sapphire 1.170ct Loose GIT

Unheated Madagascar Purple Sapphire 1.170ct Loose GIT

Sold out Unheated Blue Sapphire from Madagascar, 1.380ct Loose, AIGS

Unheated Blue Sapphire from Madagascar, 1.380ct Loose, AIGS

Sold out 0.321ct Blue Sapphire Loose Gemstone from Sri Lanka

0.321ct Blue Sapphire Loose Gemstone from Sri Lanka
Sold out Sri Lankan Yellow Sapphire 0.526ct Loose

Sri Lankan Yellow Sapphire 0.526ct Loose
Sold out Cornflower Blue Sapphire 0.680ct Loose AIGS

Cornflower Blue Sapphire 0.680ct Loose AIGS
Sold out Tanzanian Violet Sapphire 0.920ct Loose

Tanzanian Violet Sapphire 0.920ct Loose
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.674ct Loose Stone

Cambodian Blue Zircon (Ratanakiri Blue) 0.674ct Loose Stone
Sold out Cornflower Blue Sapphire 4.5mm/0.430ct Loose Stone AIGS

Cornflower Blue Sapphire 4.5mm/0.430ct Loose Stone AIGS
Sold out Unheated star ruby ​​from Myanmar, 0.617ct loose

Unheated star ruby ​​from Myanmar, 0.617ct loose
Sold out Royal Blue Sapphire 1.00ct Loose AIGS

Royal Blue Sapphire 1.00ct Loose AIGS

Sold out ピンクサファイア 0.881ctルース

Pink sapphire 0.881ct loose

Sold out マダガスカル産バイカラーサファイア 0.259ctルース

Bicolor sapphire from Madagascar 0.259ct loose
Sold out マダガスカル産バイカラーサファイア 0.212ctルース

Bicolor sapphire from Madagascar 0.212ct loose
Sold out Citrine 0.833ct loose stone

Citrine 0.833ct loose stone
Sold out ベトナム産非加熱シルキーピンクサファイア 0.197ctルース

Unheated silky pink sapphire from Vietnam 0.197ct loose
Sold out [12/7 22:00] Sri Lankan Yellow Sapphire 0.508ct Loose

[12/7 22:00] Sri Lankan Yellow Sapphire 0.508ct Loose
Sold out [12/9 22:00 Sale] Sinhalite from Sri Lanka 0.658ct Loose Stone

[12/9 22:00 Sale] Sinhalite from Sri Lanka 0.658ct Loose Stone

Sold out [12/6 22:00] Myanmar Spinel in Marble 61.204ct Loose Stone

[12/6 22:00] Myanmar Spinel in Marble 61.204ct Loose Stone
Sold out [Dandelion Cut] Madagascar Sphene 0.950ct Loose Stone

[Dandelion Cut] Madagascar Sphene 0.950ct Loose Stone

Sold out [Dandelion Cut] Madagascar Sphene 6.0mm/0.775ct Loose Stone

[Dandelion Cut] Madagascar Sphene 6.0mm/0.775ct 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.