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Sold out バンカチャサファイア（スターサファイア） 1.370ctルース

Thai Black Star Sapphire (Bangkacha Sapphire) 1.370ct Loose
Sold out ゴールドシーンサファイア 2.3mm/0.084ctルース

Kenyan gold sheen sapphire 2.3mm/0.084ct loose
Sold out インド産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 0.808ctルース

Indian Andesine Labradorite (also known as Rainbow Moonstone) 0.808ct loose stone
Sold out コンクパール 0.648ctルース

Dominican Republic Conch Pearl 0.648ct Loose
Sold out ゴールドシーンサファイア 2.2mm/0.068ctルース

Kenyan gold sheen sapphire 2.2mm/0.068ct loose
Sold out オパール 1.521ctルース

Ethiopian Opal 1.521ct Loose
Sold out オパール 1.382ctルース

Ethiopian Opal 1.382ct Loose
Sold out オパール 1.014ctルース

Ethiopian Opal 1.014ct Loose
Sold out 【12533867掲載】スターガーネット 14.200ctルース

Indian Star Garnet 14.200ct Loose Stone (6 Rows)
Sold out Limited to 9 stones: 1 Brazilian Santa Maria aquamarine (round cut, approx. 3.2mm) Multiple purchase discounts available

Limited to 9 stones: 1 Brazilian Santa Maria aquamarine (round cut, approx. 3.2mm) Multiple purchase discounts available
Sold out Kyanite from Nepal, 1 loose stone (indigo blue color, 4 x 6 mm, emerald cut) {Multiple purchase discount available}

Kyanite from Nepal, 1 loose stone (indigo blue color, 4 x 6 mm, emerald cut) {Multiple purchase discount available}
Sold out コロンビア産エメラルドキャッツアイ 0.217ctルース

Colombian emerald cat's eye 0.217ct loose stone
Sold out コロンビア産エメラルドキャッツアイ 0.179ctルース

Colombian emerald cat's eye 3.6mm/0.179ct loose stone
Sold out [Limited to 8 stones] Jam Gacha💎 1 Rainbow Garnet stone (January birthstone) from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available]

[Limited to 8 stones] Jam Gacha💎 1 Rainbow Garnet stone (January birthstone) from Tenkawa Village, Nara Prefecture [Multiple purchase discounts available]
Sold out オレゴンサンストーン 0.484ctルース

Oregon Sunstone from the United States 0.484ct loose stone
Sold out Limited to 7 stones! May birthstone special offer! Colombian emerald cat's eye, 1 loose stone (highly transparent cat's eye) Multiple purchase discounts available

Limited to 7 stones! May birthstone special offer! Colombian emerald cat's eye, 1 loose stone (highly transparent cat's eye) Multiple purchase discounts available
Sold out モルガナイト 0.633ctルース

Brazilian Morganite 0.633ct loose stone
Sold out Brazilian Green Tourmaline Cat's Eye 3.310ct Loose Stone

Brazilian Green Tourmaline Cat's Eye 3.310ct Loose Stone
Sold out ブラジル産パライバトルマリン 0.225ct原石（ CuO:2.1%、MnO:0.9%）

Brazilian Paraiba tourmaline 0.225ct raw stone (CuO:2.1%, MnO:0.9%)
Sold out 【12523642掲載】ジェレメジェバイト 0.490ct原石

Jeremejevite 0.490ct rough stone from Namibia
Sold out 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
Sold out Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for beginners: Inca Rose/Fluorite 2 stone set)

Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for beginners: Inca Rose/Fluorite 2 stone set)
Sold out Brazilian Paraiba Tourmaline (1.0mm, top quality)《Multiple purchase discount available》

Brazilian Paraiba Tourmaline (1.0mm, top quality)《Multiple purchase discount available》

Sold out アメリカ産ペリドット 1.353ctルース

American peridot 1.353ct loose
Sold out タンザニア産カイヤナイト 0.856ctルース

Tanzania Kyanite 0.856ct loose stone
Sold out 【猫カット】デンドリティッククォーツ 4.419ctルース

[Cat cut] Dendritic quartz 4.419ct loose
Sold out バイカラートルマリン 0.780ctルース

Bicolor tourmaline 0.780ct loose
Sold out グリーントルマリン 0.271ctルース

Green tourmaline 0.271ct loose
Sold out グリーンランド産アイスルビー 1石（ハートシェイプ,4mm,ピンクサファイア）《複数購入割引有》

Greenland Ice Ruby 1 stone (heart shape, 4mm, pink sapphire) {Multiple purchase discount available}

Sold out タンザニア産イリュージョンサンストーン1石ルース（6mm）《複数購入割引有》

Illusion sunstone from Tanzania 1 stone loose (6mm)《Multiple purchase discount available》

Sold out ミャンマー産トラピッチェルビー 0.248ct原石

Myanmar trapichel ruby ​​0.248ct rough stone

Sold out 【KEN氏】アパタイト 0.721ctルース

Apatite 0.721ct loose stone

Sold out パイロープ・スペサルティンガーネット（カラーチェンジガーネット） 0.860ctルース

Pyrope spessartine garnet (color change garnet) 0.860ct loose

Sold out アメリカ産ペリドット 0.749ctルース

American Peridot 0.749ct Loose Stone (with Lily Pad)

Sold out Dragon Garnet 1 stone (3.0mm, round cut)《Discount available for multiple purchases》

Dragon Garnet 1 stone (3.0mm, round cut)《Discount available for multiple purchases》
Sold out スコロライト1石ルース（8mm,コンケーブカット）《複数購入割引有》

Scorolite 1 stone loose (8mm, concave cut)《Multiple purchase discount available》
Sold out Dragon Garnet 2-Stone Set (2.0mm, Round Cut) "Multiple Purchase Discount Available"

Dragon Garnet 2-Stone Set (2.0mm, Round Cut) "Multiple Purchase Discount Available"
Sold out Pink sapphire from Madagascar 0.216ct loose

Pink sapphire from Madagascar 0.216ct 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） 2.623ctルース

Rainbow garnet (andradite garnet) 2.623ct loose from Tenkawa Village, Nara Prefecture

Sold out バイカラートルマリン 0.397ctルース

Bicolor tourmaline 0.397ct loose

Sold out Russian demantoid garnet (2mm, round cut) 1 stone (discount available for multiple purchases)

Russian demantoid garnet (2mm, round cut) 1 stone (discount available for multiple purchases)

Sold out Malachite 2-Stone Set Loose (6×8mm, Pear-Shape Cut) 《Multi-buy discount available》

Malachite 2-Stone Set Loose (6×8mm, Pear-Shape Cut) 《Multi-buy discount available》

Sold out Malachite 2 stone set loose (6mm, cushion cut)《Discount available for multiple purchases》

Malachite 2 stone set loose (6mm, cushion cut)《Discount available for multiple purchases》

Sold out カラーチェンジサファイア 0.351ctルース

Color change sapphire 0.351ct loose

Sold out 1 rose cut diamond (VS-SI class equivalent, 3.0mm)《Multiple purchase discount available》

1 rose cut diamond (VS-SI class equivalent, 3.0mm)《Multiple purchase discount available》

Sold out ケニア産イリュージョンクロムトルマリン 0.508ctルース

Illusion chrome tourmaline from Kenya 0.508ct loose

Sold out 1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》

1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》
Sold out 《限定12石》ブラジル産ラズライト（天藍石）1石ルース（初心者向け）《複数購入割引有》

1 stone loose Brazilian lazurite (for beginners)

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.