New stock

[Panda cut] Moonstone 5.476ct loose Sale price¥8,800

[Panda cut] Moonstone 3.565ct loose Sale price¥8,800

Pink tourmaline 0.915ct loose Sale price¥9,800

Bicolor tourmaline 1.084ct loose Sale price¥14,800

Synthetic moissanite 6.5mm/0.985ct loose Sale price¥15,800

Sapphire from Sri Lanka (Safarin) 0.245ct loose Sale price¥18,800

1 loose sapphire from Ratnapura, Sri Lanka (3.0mm-4.0mm, trilliant cut)《Multiple purchase discount available》 Sale price¥5,980

【甲州貴石切子】コロンビア産エメラルド 1.701ct《コラボ》ルースワッペン付

[Koshu Precious Stone Kiriko] Colombian Emerald 1.701ct《Collaboration》With Loose Patch Sale price¥98,000

Bicolor sapphire 1.020ct loose Sale price¥69,800

Colombian trapiche emerald (reverse trapiche) 0.252ct rough stone Sale price¥27,800

Colombian trapiche emerald (reverse trapiche) 0.178ct rough stone Sale price¥18,800

Colombian trapiche emerald (reverse trapiche) 0.147ct rough stone Sale price¥18,800

Colombian trapiche emerald (reverse trapiche) 0.134ct rough stone Sale price¥15,800

【カメリアカット】ロッククリスタル 1.653ctルースワッペン付 - カラッツSTORE

[Camellia cut] Rock crystal 1.653ct loose with patch Sale price¥7,980

Pink tourmaline 0.553ct loose Sale price¥8,800

Pink tourmaline 1.011ct loose Sale price¥12,800

Pink tourmaline 0.734ct loose Sale price¥9,800

Bicolor tourmaline 1.440ct loose Sale price¥15,800

Bicolor tourmaline 0.965ct loose Sale price¥12,800

Bicolor tourmaline 1.497ct loose Sale price¥19,800

Pink tourmaline 1.567ct loose Sale price¥22,800

【ダンデライオンカット】ピンクトルマリン 6mm/0.674ctルースワッペン付

[Dandelion cut] Pink tourmaline 6mm/0.674ct loose with patch Sale price¥35,800

【甲州貴石切子plusthree】グリーンクォーツ 6mm/0.731ct ルースワッペン付

[Koshu Precious Stone Kiriko PlusThree] Green Quartz 6mm/0.731ct Loose with Patch Sale price¥25,800

【甲州貴石切子plusthree】グリーンクォーツ 6mm/0.737ctルースワッペン付

[Koshu precious stone Kiriko plusthree] Green quartz 6mm/0.737ct loose with patch Sale price¥25,800

【甲州貴石切子plusthree】スモーキークォーツ 0.657ctルースワッペン付

[Koshu precious stone cut plusthree] Smoky quartz 0.657ct loose with patch Sale price¥25,800

1 Ruby from Greenland (round cut, 1.2mm)《Discount available for multiple purchases》 Sale price¥2,280

Ice ruby from Greenland 3.4mm/ 0.217ct loose with certificate Sale price¥15,800

Colombian emerald loose rough stone set of 2 stones (round cut 3mm)《Multiple purchase discount available》 Sale price¥6,980

【さくらインカット】メキシコ産オパール 6mm/0.481ctルース - カラッツSTORE

[Sakura Incut] Opal from Mexico 6mm/0.481ct loose Sale price¥35,800

Tanzanite raw stone/loose 2 stone set (sugar loaf cut)《Multiple purchase discount available》 Sale price¥6,980

1 Ruby from Greenland (heart shape, 4mm)《Discount available for multiple purchases》 Sale price¥5,980

【サンジェ氏】YAG（イットリウムアルミニウムガーネット） 6.5mm/1.774ctルース - カラッツSTORE

[Mr. Sanjay] YAG (yttrium aluminum garnet) 6.5mm/1.774ct loose Sale price¥12,800

【サンジェ氏】YAG（イットリウムアルミニウムガーネット） 6.5mm/1.548ctルース - カラッツSTORE

[Mr. Sanjay] YAG (yttrium aluminum garnet) 6.5mm/1.548ct loose Sale price¥12,800

[Mr. KEN] Zircon 0.942ct loose from Tanzania Sale price¥8,800

Ruby 0.472ct loose Sale price¥6,980

Jeweler's Tools ``Chelsea Color Filter & Dichroic Mirror'' with 3 Gems & Instructions'' Sale price¥13,200

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） 0.505ctルース

Andesine Labradorite (commonly known as Rainbow Moonstone) 0.505ct loose Sale price¥5,980

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） 0.673ctルース

Andesine Labradorite (commonly known as Rainbow Moonstone) 0.673ct loose Sale price¥8,800

[KEN] Andesine 0.540ct loose Sale price¥4,980

【KEN氏】タンザニア産クリノゾイサイト 0.950ctルース（ファントムカット） - カラッツSTORE

[Mr. KEN] Clinozoisite from Tanzania 0.950ct loose (phantom cut) Sale price¥5,980

【KEN氏】タンザニア産クリノゾイサイト 0.710ctルース（ファントムカット） - カラッツSTORE

[KEN] Clinozoisite from Tanzania 0.710ct loose (phantom cut) Sale price¥5,980

【KEN氏】タンザニア産クリノゾイサイト 0.560ctルース（ファントムカット） - カラッツSTORE

[Mr. KEN] Clinozoisite from Tanzania 0.560ct loose (phantom cut) Sale price¥5,980

Spinel from Sri Lanka 0.800ct loose Sale price¥9,800

【ダンデライオンカット】スモーキークォーツ 25mm/41.745ct《コラボ》ルース（6枚花びら）ワッペン付

[Dandelion Cut] Smoky Quartz 25mm/41.745ct《Collaboration》Loose (6 petals) with patch Sale price¥158,000

<Use November 2024 Campaign> Brazilian Pink Imperial Topaz 1.907ct Loose Stone, Japan-Germany Exchange Sale price¥118,000

Russian demantoid garnet (horsetail recognized) 0.214ct loose Sale price¥59,800

ブラジル産パライバトルマリン 0.065ctルース（CuO:2.0%、MnO:2.6%）

《Yurakucho Marui 2024112 takeout》Brazilian Paraiba tourmaline 0.065ct loose stone (CuO:2.0%, MnO:2.6%) Sale price¥25,800

Spinel from Sri Lanka 0.276ct loose Sale price¥4,980

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