Product list

Colombian trapiche emerald (reverse trapiche) 0.107ct rough stone Sale price¥14,800

Pt950 benitoite 0.10ct/diamond ring Sale price¥69,800

K18バイカラーサファイア0.129ct・ブルーサファイアリング - カラッツSTORE

K18 bicolor sapphire 0.129ct/blue sapphire ring Sale price¥69,800

Colombian emerald cat's eye 0.834ct loose Sale price¥59,800

Lavender spinel 1.285ct loose Sale price¥45,800

ロシア産デマントイドガーネット（ホーステール認む） 5.5mm/0.710ctルース

Russian demantoid garnet (horsetail recognized) 5.5mm/0.710ct loose Sale price¥198,000

ロシア産デマントイドガーネット（ホーステール認む） 5.3mm/0.692ctルース

Russian demantoid garnet (horsetail recognized) 5.3mm/0.692ct loose Sale price¥178,000

Montana Sapphire 2.7mm/0.098ct Loose (Yellow) Sale price¥9,800

Montana Sapphire 2.4mm/0.071ct Loose (Yellow) Sale price¥7,980

【KEN氏】ミャンマー産モーシッシ 0.855ctルース（マウシットシット） - カラッツSTORE

[Mr. KEN] Maussith from Myanmar 0.855ct loose (Mausitsit) Sale price¥5,980

【KEN氏】ミャンマー産モーシッシ 1.176ctルース（マウシットシット） - カラッツSTORE

[Mr. KEN] Mausithit from Myanmar 1.176ct loose (Maushitsit) Sale price¥6,980

【KEN氏】ミャンマー産モーシッシ 1.112ctルース（マウシットシット） - カラッツSTORE

[Mr. KEN] Maussitsi 1.112ct loose from Myanmar (Maussitsits) Sale price¥6,980

Kunzite 13.700ct loose Sale price¥19,800

ロシア産デマントイドガーネット（ホーステール認む） 2.9mm/0.165ctルース

Russian demantoid garnet (horsetail recognized) 2.9mm/0.165ct loose Sale price¥33,800

ロシア産デマントイドガーネット（ホーステール認む） 2.8mm/0.187ctルース

Russian demantoid garnet (horsetail recognized) 2.8mm/0.187ct loose Sale price¥25,800

Gem Gacha💎 Cat Set (1 gemstone + 2 sapphires) {Multiple purchase discounts available} Sale price¥3,333

ファンシーインテンスイエローダイヤモンド 0.126ctルース(FANCY INTENSE YELLOW, SI-1)

FANCY INTENSE YELLOW, SI-1 Sale price¥25,800

Tagtupite from Greenland 0.236ct loose Sale price¥18,800

Benitoite 2.7mm/0.114ct loose Sale price¥27,800

Benitoite 2.7mm/0.104ct loose Sale price¥29,800

Rhodochrosite from South Africa 5.2mm/0.645ct loose Sale price¥59,800

Montana Sapphire 3mm/0.149ct Loose (Rock Creek) Sale price¥19,800

Benitoite 0.100ct loose (emerald cut) Sale price¥35,800

Umba sapphire (from Tanzania) 0.503ct loose Sale price¥8,800

Demantoid garnet from Madagascar 0.074ct loose Sale price¥8,800

Demantoid garnet from Madagascar 0.062ct loose Sale price¥11,800

Mexican cantera opal 12.401ct loose Sale price¥15,800

Mexican cantera opal 4.711ct loose Sale price¥15,800

Opal 426.985ct rough stone Sale price¥39,800

Red beryl 0.224ct loose Sale price¥25,800

[Koshu precious stone cut plusthree] Citrine 0.901ct loose with patch Sale price¥29,800

【ダンデライオンカット】スリランカ産シリマナイト 11mm/5.573ct《コラボ》ルース日独鑑

[Dandelion Cut] Sillimanite from Sri Lanka 11mm/5.573ct《Collaboration》Ruth Japanese-German Edition Sale price¥128,000

Orange Sealight 1.061ct loose Sale price¥29,800

Orange Sealight 0.903ct loose Sale price¥29,800

【シミズ貴石代表・清水幸雄氏】ラピスラズリ 32.292ct箸置き箔押しサイン＆ワッペン付き

[Shimizu Precious Stones Representative Yukio Shimizu] Lapis lazuli 32.292ct chopstick rest (step cut) with foil stamped signature and emblem Sale price¥15,800

【シミズ貴石代表・清水幸雄氏】ラピスラズリ 33.483ct箸置き箔押しサイン＆ワッペン付き

[Shimizu Precious Stones Representative Yukio Shimizu] Lapis lazuli 33.483ct chopstick rest (step cut) with foil-stamped signature and patch Sale price¥15,800

【シミズ貴石代表・清水幸雄氏】アラゴナイト 36.312ct箸置き箔押しサイン＆ワッペン付き

[Shimizu Precious Stones Representative Yukio Shimizu] Aragonite 36.312ct chopstick rest (step cut) with foil-stamped signature and patch Sale price¥16,800

【シミズ貴石代表・清水幸雄氏】アマゾナイト 25.821ct箸置き箔押しサイン＆ワッペン付き

[Shimizu Precious Stones Representative Yukio Shimizu] Amazonite 25.821ct chopstick rest (step cut) with foil stamped signature and patch Sale price¥19,800

【シミズ貴石代表・清水幸雄氏】アマゾナイト 28.433ct箸置き箔押しサイン＆ワッペン付き

[Shimizu Precious Stones Representative Yukio Shimizu] Amazonite 28.433ct chopstick rest (step cut) with foil stamped signature and patch Sale price¥19,800

【シミズ貴石代表・清水幸雄氏】アメジスト 27.955ct箸置き箔押しサイン＆ワッペン付き

[Mr. Yukio Shimizu, representative of Shimizu Precious Stones] Rose amethyst 27.955ct chopstick rest (step cut) with foil-stamped signature and patch Sale price¥16,800

【シミズ貴石代表・清水幸雄氏】アメジスト 23.833ct箸置き箔押しサイン＆ワッペン付き

[Mr. Yukio Shimizu, representative of Shimizu Precious Stones] Pink amethyst 23.833ct chopstick rest (cylindrical shape) with foil-stamped signature and emblem Sale price¥9,800

【シミズ貴石代表・清水幸雄氏】アメジスト 29.154ct箸置き箔押しサイン＆ワッペン付き

[Mr. Yukio Shimizu, representative of Shimizu Precious Stones] Amethyst 29.154ct chopstick rest (cylindrical shape) with foil-stamped signature and emblem Sale price¥12,800

【シミズ貴石代表・清水幸雄氏】ラブラドライト 27.135ct箸置き箔押しサイン＆ワッペン付き

[Mr. Yukio Shimizu, representative of Shimizu Precious Stones] Labradorite 27.135ct chopstick rest (cylindrical shape) with foil-stamped signature and patch Sale price¥12,800

【シミズ貴石代表・清水幸雄氏】ラブラドライト 28.066ct箸置き箔押しサイン＆ワッペン付き

[Mr. Yukio Shimizu, representative of Shimizu Precious Stones] Labradorite 28.066ct chopstick rest (cylindrical shape) with foil-stamped signature and patch Sale price¥12,800

【シミズ貴石代表・清水幸雄氏】モスアゲート 27.539ct箸置き箔押しサイン＆ワッペン付き

[Mr. Yukio Shimizu, representative of Shimizu Precious Stones] Moss Agate 27.539ct chopstick rest (cylindrical shape) with foil-stamped signature and patch Sale price¥12,800

【シミズ貴石代表・清水幸雄氏】ラピスラズリ 34.074ct箸置き箔押しサイン＆ワッペン付き

[Mr. Yukio Shimizu, representative of Shimizu Precious Stones] Lapis lazuli 34.074ct chopstick rest (cylindrical shape) with foil-stamped signature and patch Sale price¥9,800

【シミズ貴石代表・清水幸雄氏】ラブラドライト 26.707ct箸置き箔押しサイン＆ワッペン付き

[Mr. Yukio Shimizu, representative of Shimizu Precious Stones] Labradorite 26.707ct chopstick rest (cylindrical shape) with foil-stamped signature and patch Sale price¥12,800

Blue zircon 0.194ct 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