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Sold out 北海道産北海道産ロードクロサイト 0.708ctルース

Hokkaido rhodochrosite 0.708ct loose
Sold out 北海道産北海道産ロードクロサイト 0.788ctルース

Hokkaido rhodochrosite 0.788ct loose

Sold out Hokkaido rhodochrosite 0.773ct loose

Hokkaido rhodochrosite 0.773ct loose
Sold out 北海道産北海道産ロードクロサイト 0.965ctルース

Hokkaido rhodochrosite 0.965ct loose
Sold out Hokkaido rhodochrosite 0.927ct loose

Hokkaido rhodochrosite 0.927ct loose
Sold out Hokkaido rhodochrosite 0.555ct loose

Hokkaido rhodochrosite 0.555ct loose
Sold out Hokkaido rhodochrosite 0.835ct loose

Hokkaido rhodochrosite 0.835ct loose
Sold out Hokkaido rhodochrosite 0.761ct loose

Hokkaido rhodochrosite 0.761ct loose
Sold out Hokkaido rhodochrosite 0.885ct loose

Hokkaido rhodochrosite 0.885ct loose
Sold out Hokkaido rhodochrosite 0.634ct loose

Hokkaido rhodochrosite 0.634ct loose
Sold out 北海道産北海道産ロードクロサイト 0.916ctルース

Hokkaido rhodochrosite 0.916ct loose
Sold out 北海道産北海道産ロードクロサイト 0.699ctルース

Hokkaido rhodochrosite 0.699ct loose

Sold out Hokkaido rhodochrosite 0.728ct loose

Hokkaido rhodochrosite 0.728ct loose
Sold out Hokkaido rhodochrosite 0.914ct loose

Hokkaido rhodochrosite 0.914ct loose
Sold out Hokkaido rhodochrosite 0.769ct loose

Hokkaido rhodochrosite 0.769ct loose
Sold out Sri Lankan Yellow Sapphire 3-Stone Set (Hexagonal Cut) Loose Stones {Multiple Purchase Discounts Available}

Sri Lankan Yellow Sapphire 3-Stone Set (Hexagonal Cut) Loose Stones {Multiple Purchase Discounts Available}
Sold out Sapphire Gacha💎 Sri Lankan Sapphire (Hexagonal Cut) 1 Loose Stone {Multiple Purchase Discounts Available}

Sapphire Gacha💎 Sri Lankan Sapphire (Hexagonal Cut) 1 Loose Stone {Multiple Purchase Discounts Available}
Sold out Sapphire Gacha💎 Sri Lankan Blue Sapphire (Hexagonal Cut) 1 Loose Stone {Multiple Purchase Discounts Available}

Sapphire Gacha💎 Sri Lankan Blue Sapphire (Hexagonal Cut) 1 Loose Stone {Multiple Purchase Discounts Available}
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） 0.105ctルース

Bekily Blue Garnet from Madagascar (color change garnet) 0.105ct loose
Sold out ベキリーブルーガーネット（カラーチェンジガーネット） 0.111ctルース

Bekiri Blue Garnet (Color Change Garnet) from Madagascar 2.5mm/0.111ct Loose Stone
Sold out 【猫カット】ピンクトルマリン 0.332ctルース

[Cat cut] Pink tourmaline 0.332ct loose stone
Sold out 【猫カット】ピンクトルマリン 4.5mm/0.302ctルース

[Cat cut] Pink tourmaline 4.5mm/0.302ct loose stone
Sold out 【猫カット】ピンクトルマリン 4.5mm/0.401ctルース

[Cat cut] Pink tourmaline 4.5mm/0.401ct loose stone
Sold out モンタナアゲート 9.712ctルース

Montana Agate 9.712ct Loose Stone
Sold out モンタナアゲート 7.459ctルース

Montana Agate 7.459ct Loose
Sold out モンタナアゲート 4.893ctルース

Montana Agate 4.893ct Loose
Sold out ブラジル産コッパールチルクォーツ 1.780ctルース

Brazilian copper rutilated quartz 1.780ct loose stone
Sold out ナイジェリア産イエローベリル（ヘリオドール） 0.196ctルース

Nigerian Yellow Beryl (Heliodor) 0.196ct Loose Stone
Sold out ナイジェリア産イエローベリル（ヘリオドール） 2.167ctルース

Nigerian Yellow Beryl (Heliodor) 2.167ct Loose Stone
Sold out インド産ムーンストーン 2.636ctルース

Indian Moonstone 10mm/2.636ct Loose
Sold out インド産ムーンストーン 0.465ctルース

Indian Moonstone 5.3mm/0.465ct Loose
Sold out ブラジル産ルチルレイテッドクォーツ 1.077ctルース

Brazilian rutilated quartz (rutilated quartz) 7.4mm/1.077ct loose stone
Sold out ブラジル産ルチルレイテッドクォーツ 1.385ctルース

Brazilian rutilated quartz (rutilated quartz) 1.385ct loose stone
Sold out マダガスカル産パパラチアサファイア 0.267ctルース　DGL鑑

Madagascar Padparadscha Sapphire 0.267ct Loose DGL
Sold out 非加熱ロイヤルブルーサファイア 0.560ctルース AIGS

Unheated royal blue sapphire 0.560ct loose AIGS
Sold out 【さくらインカット】ティンカーベルクォーツ（ピンクファイヤークォーツ）9mm/ 1.973ctルース《コラボ》ワッペン

[Sakura Incut] Tinkerbell Quartz (Pink Fire Quartz) 9mm/ 1.973ct Loose Stone {Collaboration} Patch
Sold out Unheated Sapphire Gacha💎 (Only 2 stones are unheated Padparadscha sapphires with GIA certificate) 1 loose stone {Multiple purchase discounts available}

Unheated Sapphire Gacha💎 (Only 2 stones are unheated Padparadscha sapphires with GIA certificate) 1 loose stone {Multiple purchase discounts available}
Sold out Limited to 3 stones [Mr. Sanje] Dominican Republic Larimar 1 stone loose [Multiple purchase discount available]

Limited to 3 stones [Mr. Sanje] Dominican Republic Larimar 1 stone loose [Multiple purchase discount available]
Sold out Limited to 3 stones: Tanzanian mandarin garnet (sugarloaf cut) 1 loose stone (multiple purchase discounts available)

Limited to 3 stones: Tanzanian mandarin garnet (sugarloaf cut) 1 loose stone (multiple purchase discounts available)
Sold out Limited to 3 stones: 1 Tanzanian pyrope almandine garnet (princess cut) loose stone (multiple purchase discounts available)

Limited to 3 stones: 1 Tanzanian pyrope almandine garnet (princess cut) loose stone (multiple purchase discounts available)
Sold out Madagascar gray spinel (green fluorescent type) 1 loose stone {Multiple purchase discounts available}

Madagascar gray spinel (green fluorescent type) 1 loose stone {Multiple purchase discounts available}
Sold out マダガスカル産アレキサンドライト 0.990ctルース（シルキーアレキサンドライト） GIA

Madagascar Alexandrite 0.990ct Loose Stone (Silky Alexandrite) GIA

Sold out ロシア産アレキサンドライト 0.870ctルース

Russian Alexandrite 0.870ct Loose GIA
Sold out アルマンディンガーネット 1.780ctルース

Almandine Garnet 1.780ct Loose
Sold out Limited to 4 stones: 1 loose Brazilian blue tourmaline stone. Discounts available for multiple purchases.

Limited to 4 stones: 1 loose Brazilian blue tourmaline stone. Discounts available for multiple purchases.
Sold out Limited to 2 stones: 1 Indian Bloodshot Iolite Sunstone Loose Stone (Multiple purchase discount available)

Limited to 2 stones: 1 Indian Bloodshot Iolite Sunstone Loose Stone (Multiple purchase discount available)
Sold out タンザニア産ゾイサイト 0.299ctルース

Tanzania Bicolor Zoisite 4.2mm/0.299ct 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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.

KARATZ・Five Commitments