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Sold out スフェーン 0.503ctルース

Sphene 0.503ct loose stone
Sold out 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） 0.404ctルース

Andesine Labradorite (also known as Rainbow Moonstone) 0.404ct loose stone
Sold out 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） 3.251ctルース

Andesine Labradorite (also known as Rainbow Moonstone) 7.7mm/3.251ct Loose Stone (Sphere)
Sold out 《Limited to 4 stones》Madagascar pezzottaite (round cut, approx. 3mm) by Sanjeev Singh, 1 loose stone《Multiple purchase discount available》

《Limited to 4 stones》Madagascar pezzottaite (round cut, approx. 3mm) by Sanjeev Singh, 1 loose stone《Multiple purchase discount available》
Sold out マダガスカル産アイオライトサンストーン 0.388ctルース

0.388ct Loose Iolite Sunstone from Madagascar
Sold out マダガスカル産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 1.003ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 1.003ct loose stone
Sold out Madagascar Bekily Blue Garnet (Color Change Garnet) 0.221ct Loose Stone

Madagascar Bekily Blue Garnet (Color Change Garnet) 0.221ct Loose Stone
Sold out Madagascar Bekily Blue Garnet (Color Change Garnet) 0.206ct Loose Stone

Madagascar Bekily Blue Garnet (Color Change Garnet) 0.206ct Loose Stone

Sold out Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.254ct Loose Stone

Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.254ct Loose Stone

Sold out マダガスカル産オイルインクォーツ1石ルース（近年発見の新しい産地,平均28ct）《複数購入割引有》

[Limited to 7 stones] 1 loose oil-in-quartz stone from Madagascar (new locality discovered in recent years, average 28ct) [Multiple purchase discounts available]
Sold out 【12562747掲載】マダガスカル産非加熱ティールグリーンサファイア 1.740ctルース

Madagascar Unheated Teal Green Sapphire 1.74ct Loose GIA

Sold out 0.133ct Loose Blue Sapphire from Madagascar

0.133ct Loose Blue Sapphire from Madagascar
Sold out 0.163 ct loose grandidierite from Madagascar

0.163 ct loose grandidierite from Madagascar
Sold out Madagascar Grandidierite 0.112ct Loose Stone

Madagascar Grandidierite 0.112ct Loose Stone
Sold out マダガスカル産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 0.463ctルース

0.463 ct Loose Madagascar Andesine-Labradorite (Common Name: Rainbow Moonstone)
Sold out マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.089ctルース

Bekily Blue Garnet from Madagascar (color change garnet) 0.089ct loose
Sold out マダガスカル産アイオライトサンストーン 0.311ctルース

Madagascar Iolite Sunstone 0.311ct Loose
coming soon ピンクサファリン 0.239ctルース

0.239ct Loose Pink Sapphire from Madagascar, Japan/Germany Sale price¥49,800
Sold out マダガスカル産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 0.581ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.581ct loose stone
Sold out Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]

Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]
Sold out [12548259 published] Padparadscha sapphire 0.524ct loose

[12548259 published] Padparadscha sapphire 0.524ct loose
Sold out Bekily Blue Garnet from Madagascar (color change garnet) 0.163ct loose

Bekily Blue Garnet from Madagascar (color change garnet) 0.163ct loose
Sold out Madagascar Grandidierite 0.109ct loose stone

Madagascar Grandidierite 0.109ct loose stone
Sold out マダガスカル産グランディディエライト 0.108ctルース

Grandidierite from Madagascar 0.108ct loose stone

Sold out ピンクサファリン 0.178ctルース

0.178ct Madagascar Pink Sapphire Loose Stone, Japan-German

Sold out Madagascar Pezzottaite Gacha (2.2-2.5mm, Round Cut) - Limited to 6 Stones (Multiple Purchase Discount Available)

Madagascar Pezzottaite Gacha (2.2-2.5mm, Round Cut) - Limited to 6 Stones (Multiple Purchase Discount Available)
Sold out 0.072 ct loose Bekily blue garnet (color-change garnet) from Madagascar

0.072 ct loose Bekily blue garnet (color-change garnet) from Madagascar
Sold out 0.076ct Loose Madagascar Bekily Blue Garnet (Color Change Garnet)

0.076ct Loose Madagascar Bekily Blue Garnet (Color Change Garnet)
Sold out 0.099ct Loose Grandidierite from Madagascar

0.099ct Loose Grandidierite from Madagascar
Sold out Grandidierite from Madagascar 0.269ct loose stone

Grandidierite from Madagascar 0.269ct loose stone
Sold out Madagascar Sphene 4.5mm/0.509ct Loose Gemstone

Madagascar Sphene 4.5mm/0.509ct Loose Gemstone
Sold out Madagascar Purple Sapphire 4.2mm/0.418ct Loose

Madagascar Purple Sapphire 4.2mm/0.418ct Loose
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 Grandidierite from Madagascar 0.228ct loose stone

Grandidierite from Madagascar 0.228ct loose stone
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 Madagascar Andesine Labradorite (commonly known as Rainbow Moonstone) 4.867ct Loose Stone

Madagascar Andesine Labradorite (commonly known as Rainbow Moonstone) 4.867ct Loose Stone
Sold out Madagascar Andesine Labradorite (commonly known as Rainbow Moonstone) 4.894ct Loose Stone

Madagascar Andesine Labradorite (commonly known as Rainbow Moonstone) 4.894ct Loose Stone
Sold out Madagascar Andesine Labradorite (commonly known as Rainbow Moonstone) 0.498ct Loose Stone

Madagascar Andesine Labradorite (commonly known as Rainbow Moonstone) 0.498ct Loose Stone
Sold out Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.491ct Loose Stone

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.491ct Loose Stone
Sold out マダガスカル産デマントイドガーネット 38.035ct原石

Demantoid garnet 38.035ct rough stone from Madagascar

Sold out マダガスカル産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 0.666ctルース

Andesine Labradorite from Madagascar (commonly known as Rainbow Moonstone) 0.666ct loose
Sold out マダガスカル産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 0.570ctルース

Andesine Labradorite (commonly known as Rainbow Moonstone) from Madagascar 0.570ct loose
Sold out Grandidierite from Madagascar 0.167ct loose stone

Grandidierite from Madagascar 0.167ct loose stone
Sold out Grandidierite from Madagascar 0.169ct loose stone

Grandidierite from Madagascar 0.169ct loose stone
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

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.