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Sold out モンタナサファイア 0.458ctルース

Montana Sapphire 0.458ct Loose (Bi-Color Sapphire)
Sold out モンタナサファイア 0.416ctルース

Montana Sapphire 0.416ct Loose (Bi-Color Sapphire)
Sold out モンタナサファイア 0.443ctルース

Montana Sapphire 0.443ct loose (green sapphire)
Sold out A single loose pink diamond, including a fancy pink diamond, normally priced at 39,800 yen (multiple purchase discounts available)

A single loose pink diamond, including a fancy pink diamond, normally priced at 39,800 yen (multiple purchase discounts available)

Sold out 《Limited to 15 stones》Topaz Gacha with Koshu Kiseki Kiriko 10ct (normally 69,800 yen) and sherry-colored Imperial Topaz included 《Multiple purchase discount available》

《Limited to 15 stones》Topaz Gacha with Koshu Kiseki Kiriko 10ct (normally 69,800 yen) and sherry-colored Imperial Topaz included 《Multiple purchase discount available》

Sold out Limited to 2 stones: Greenland Ruby, 1 stone, loose (2.2mm, top color, with certificate) (Multiple purchase discount available)

Limited to 2 stones: Greenland Ruby, 1 stone, loose (2.2mm, top color, with certificate) (Multiple purchase discount available)

Sold out 【12559023掲載】ブラジル産アベンチュリンベリル 0.621ctルース

Brazilian Aventurine Beryl 5.5mm/0.621ct Loose Stone
Sold out 【12562049掲載】オーストラリア産レインボーラティスサンストーン 0.373ctルース

Australian Rainbow Lattice Sunstone 0.373ct Loose

Sold out 【12561997掲載】メキシコ産ファイアオパール 1.461ctルース

Mexican Fire Opal 1.461ct Loose (Egg-in-Opal)

Sold out 【12561996掲載】メキシコ産ファイアオパール 1.260ctルース

Mexican Fire Opal 1.260ct Loose
Sold out Limited to 8 stones - New in Tucson - Canadian Eudialite (Round Cut, Approx. 2mm) - Multiple purchase discounts available

Limited to 8 stones - New in Tucson - Canadian Eudialite (Round Cut, Approx. 2mm) - Multiple purchase discounts available
Sold out Limited to 6 stones: Brazilian dendritic quartz (new to Tucson, average 2.5 carats) [Multiple purchase discounts available]

Limited to 6 stones: Brazilian dendritic quartz (new to Tucson, average 2.5 carats) [Multiple purchase discounts available]
Sold out クォーツ 96.732ctルース（爆裂水晶）

Quartz 96.732ct loose (explosion crystal)
Sold out 【KEN氏】ピンクトルマリン 4.0mm/0.300ctルース

Pink tourmaline 4.0mm/0.300ct loose stone
Sold out 【KEN氏】オレゴンサンストーン 1.333ctルース

Oregon Sunstone 1.333ct Loose
Sold out グリーンサファイア 0.518ctルース

Green sapphire 0.518ct loose (teal green)
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） 1.163ctルース

Rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture 1.163ct loose
Sold out ミャンマー産トラピッチェルビー 0.202ct原石

Trapichel ruby ​​from Myanmar 0.202ct rough stone
Sold out コロンビア産トラピッチェエメラルド（逆トラピッチェ） 0.108ctルース

Colombian trapiche emerald (reverse trapiche) 0.108ct loose
Sold out コロンビア産トラピッチェエメラルド（逆トラピッチェ） 0.084ctルース

Colombian trapiche emerald (reverse trapiche) 0.084ct loose
Sold out Tanzanian Almandine Garnet 0.998ct Loose Stone

Tanzanian Almandine Garnet 0.998ct Loose Stone
Sold out タンザニア産アルマンディンガーネット 0.930ctルース

Tanzanian Almandine Garnet 0.930ct Loose Stone
Sold out タンザニア産アルマンディンガーネット 0.750ctルース

Tanzanian Almandine Garnet 0.750ct Loose Stone
Sold out タンザニア産アルマンディンガーネット 0.656ctルース

Tanzanian Almandine Garnet 0.656ct Loose Stone
Sold out スリランカ産ブルーサファイア（アイスブルー） 0.300ctルース

Sri Lankan Blue Sapphire (Ice Blue) 0.300ct Loose
Sold out インド産アイオライトサンストーン 0.769ctルース

Indian Iolite Sunstone 0.769ct Loose Stone
Sold out インド産アイオライトサンストーン 0.540ctルース

Indian Iolite Sunstone 0.540ct Loose Stone
Sold out Limited to 12 stones! Gemstone Gacha including Brazilian Paraiba Tourmaline rough stone 💎 1 rough stone (Multiple purchase discounts available)

Limited to 12 stones! Gemstone Gacha including Brazilian Paraiba Tourmaline rough stone 💎 1 rough stone (Multiple purchase discounts available)
Sold out Limited to 8 stones: 1 loose Brazilian ametrine (concave cut, average 10 carats) Multiple purchase discounts available

Limited to 8 stones: 1 loose Brazilian ametrine (concave cut, average 10 carats) Multiple purchase discounts available
Sold out Limited to 7 stones: One loose colorless apatite from Madagascar (with appraisal certificate for each stone, average 0.60 carat) Discounts available for multiple purchases

Limited to 7 stones: One loose colorless apatite from Madagascar (with appraisal certificate for each stone, average 0.60 carat) Discounts available for multiple purchases
Sold out Limited Quantity: Madagascar Neon Blue Apatite Rough Stone (Average 2.2ct) Multiple Purchase Discounts Available

Limited Quantity: Madagascar Neon Blue Apatite Rough Stone (Average 2.2ct) Multiple Purchase Discounts Available
Sold out Felspar 1.478ct loose from Sri Lanka

Felspar 1.478ct loose from Sri Lanka
Sold out モザンビーク産ピンクサファイア 0.213ctルース（ホットピンクサファイア）

Pink sapphire from Mozambique 0.213ct loose (hot pink sapphire)
Sold out ブラジル産アレキサンドライト 0.058ctルース

[Posted 12544974] Alexandrite from Brazil 0.058ct loose
Sold out コロンビア産トラピッチェエメラルド（逆トラピッチェ） 0.053ctルース

Colombian trapiche emerald (reverse trapiche) 0.053ct loose
Sold out アンダリュサイト 0.317ctルース

Spanish Andalusite 0.317ct loose stone
Sold out GGG（ガドリウムガリウムガーネット） 0.675ctルース

GGG (Gadolium Gallium Garnet) 4.0mm/0.675ct Loose Stone
Sold out Synthetic rutile 0.538ct loose stone

Synthetic rutile 0.538ct loose stone
Sold out アフガニスタン産アフガナイト 0.077ctルース

Afghanite 0.077ct loose stone from Afghanistan
Sold out 【猫カット】ブラジル産ホワイトカルセドニー 0.707ctルース

[Cat Cut] Brazilian White Chalcedony 0.707ct Loose Stone
Sold out ミャンマー産トラピッチェルビー 0.152ct原石

Myanmar trapichel ruby ​​0.152ct rough stone
Sold out ミャンマー産トラピッチェルビー 0.261ct原石

Myanmar trapichel ruby ​​0.261ct rough stone
Sold out マデイラシトリン 7mm/0.938ctルース

Madeira Citrine 7mm/0.938ct loose
Sold out 合成オパール 6.1mm/0.792ctルース（ローズカット） (ローズカット)

Synthetic Opal 6.1mm/0.792ct Loose Stone (Rose Cut)
Sold out タンザニア産サンストーン（イリュージョンサンストーン） 6.3mm/0.911ctルース（ローズカット）

Tanzanian Sunstone (Illusion Sunstone) 6.3mm/0.911ct Loose Stone (Rose Cut)
Sold out タンザニア産アンデシン・ラブラドライト（通称名 レインボームーンストーン） 4.3mm/0.238ctルース（ローズカット）

Tanzanian Andesine Labradorite (also known as Rainbow Moonstone) 4.3mm/0.238ct Loose Stone (Rose Cut)
Sold out Pink Diamond Gacha💎 (Includes two Fancy Intense 0.063ct diamonds with a medium-sized gemstone, normally priced at ¥98,000, and two Fancy Purplish Pink 1.7mm 0.021ct diamonds) {Multiple purchase discounts available}

Pink Diamond Gacha💎 (Includes two Fancy Intense 0.063ct diamonds with a medium-sized gemstone, normally priced at ¥98,000, and two Fancy Purplish Pink 1.7mm 0.021ct diamonds) {Multiple purchase discounts available}
Sold out Limited to 3 stones: Indian Andesine and Labradorite (Rainbow Moonstone) Flower Carving, 6mm, 1 stone. Discounts available for multiple purchases.

Limited to 3 stones: Indian Andesine and Labradorite (Rainbow Moonstone) Flower Carving, 6mm, 1 stone. Discounts available for multiple purchases.

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.