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Sold out モザンビーク産パライバトルマリン 0.376ctルース

Paraiba Tourmaline from Mozambique 0.376ct loose stone (UV type)
Sold out Limited to 8 stones: 1 loose Mahenge spinel from Tanzania (hot pink spinel, 2.0mm) Multiple purchase discounts available

Limited to 8 stones: 1 loose Mahenge spinel from Tanzania (hot pink spinel, 2.0mm) Multiple purchase discounts available

Sold out Tanzanian Mahenge Spinel 2-stone loose set (hot pink spinel, 1.8mm) {Multiple purchase discount available}

Tanzanian Mahenge Spinel 2-stone loose set (hot pink spinel, 1.8mm) {Multiple purchase discount available}
Sold out Montana Sapphire 2-Stone Loose Stone Set (Yellow Sapphire) {Multiple Purchase Discounts Available}

Montana Sapphire 2-Stone Loose Stone Set (Yellow Sapphire) {Multiple Purchase Discounts Available}

Sold out Sapphire Gacha💎 Montana sapphire 1 loose stone (green-blue, 3×4mm) {Multiple purchase discounts available}

Sapphire Gacha💎 Montana sapphire 1 loose stone (green-blue, 3×4mm) {Multiple purchase discounts available}
Sold out [Limited to 2 stones] 1 Brazilian rhodolite garnet loose stone (trillion cut, 6mm) [Multiple purchase discount available]

[Limited to 2 stones] 1 Brazilian rhodolite garnet loose stone (trillion cut, 6mm) [Multiple purchase discount available]
Sold out バイカラーサファイア 0.474ctルース

Bicolor sapphire 0.474ct loose stone
Sold out バイカラーサファイア 0.472ctルース

Bicolor sapphire 0.472ct loose stone
Sold out バイカラーサファイア 1.071ctルース

Bicolor sapphire 1.071ct loose stone
Sold out 合成アレキサンドライト 0.722ctルース

Synthetic Alexandrite 0.722ct loose stone
Sold out 1 piece of Indian Kabansite rough stone {Multiple purchase discounts available}

1 piece of Indian Kabansite rough stone {Multiple purchase discounts available}
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 【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/0.401ct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 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 1.385ct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 南アフリカ産ダイヤモンド原石（ソーヤブル） 0.097ct原石（トライゴン）

South African diamond rough (sawable) 0.097ct rough (trigon)
Sold out K18ミャンマー産レッドスピネル0.59ct・ピンクダイヤモンド ペンダントトップ（ネックレストップ）

K18 Myanmar red spinel 0.59ct pink diamond pendant (necklace)
Sold out K18マダガスカル産スフェーン0.57ct・ベニトアイト０.061ctリング

K18 Madagascar sphene 0.57ct, benitoite 0.061ct ring
Sold out K18タンザニア産イリュージョンサンストーン0.726ct・パライバトルマリンリング

K18 Tanzanian illusion sunstone 0.726ct Paraiba tourmaline ring
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 ブラジル産パライバトルマリン・サンタマリアアクアマリン・アイスブルーダイヤモンド・タンザナイト１３石ハーフエタニティリングセット（2.0mm)

Brazilian Paraiba tourmaline, Santa Maria aquamarine, ice blue diamond, and 13-stone tanzanite half eternity ring set (2.0mm)

Sold out ブラジル産パライバトルマリン・ダイヤモンド（H&C）１３石ハーフエタニティリングセット（2.0mm)

Brazilian Paraiba Tourmaline and Diamond (H&C) 13-stone half eternity ring set (2.0mm)
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: 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 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 K18ベトナム産非加熱シルキーピンクサファイア0.36ct・アコヤ真珠ベビーパールリング

K18 Vietnam unheated silky pink sapphire 0.36ct Akoya pearl baby pearl ring
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 Limited to 4 stones: 1 loose Australian rainbow lattice sunstone stone. Discounts available for multiple purchases.

Limited to 4 stones: 1 loose Australian rainbow lattice sunstone stone. Discounts available for multiple purchases.
Sold out ビルマ産ルビー 0.151ctルース

Burmese Ruby 0.151ct Loose
Sold out パキスタン産ヴェイリネナイト 0.075ctルース

Pakistani Veirinite 0.075ct loose stone
Sold out コッパールチルクォーツ 1.318ctルース

Brazilian copper rutilated quartz 7.2mm/1.318ct loose stone
Sold out タンザニア産ラブラドライト（通称名 レインボームーンストーン） 4.630ctルース

Tanzanian Labradorite (also known as Rainbow Moonstone) 4.630ct loose stone
Sold out スペイン産スファレライト 2.074ctルース

Spanish Sphalerite 7.2mm/2.074ct loose stone
Sold out Teal blue sapphire 0.245ct loose stone

Teal blue sapphire 0.245ct loose stone
Sold out スリランカ産イエローサファイア 0.370ctルース

Sri Lankan Yellow Sapphire 0.370ct 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.

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