New stock

[Updated 12552163] Benitoite 0.099ct loose stone Sale price¥34,800

[12545602] Paraiba Tourmaline from Mozambique 0.321ct loose stone Sale price¥15,800

【スタッフセレクション】マダガスカル産バイカラーサファイア 0.330ctルース（セミオーダーメイドセット）

[Staff Selection] Madagascar Bicolor Sapphire 0.330ct Loose (Semi-Custom Made Set) Sale price¥47,800

【スタッフセレクション】サンタマリアアクアマリン 0.257ctルース（セミオーダーメイドセット）

[Staff Selection] Brazilian Santa Maria Aquamarine 0.257ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

[12549449 published] Montana Sapphire 0.263ct loose Sale price¥8,800

《Yurakucho Marui 2024112 takeout》Australian black opal 1.057ct loose Sale price¥39,800

[12550865] 0.203ct loose zoisite from Tanzania Sale price¥6,980

[12551312] Zimbabwean Blue Apatite (UV Type) 1.312ct Loose Stone Sale price¥9,800

[12551175] Bicolor fluorite 0.847ct loose stone Sale price¥6,980

[12551529] Australian black opal 2.233ct loose stone Sale price¥69,800

[12550768] Salt and pepper diamond 0.310ct loose stone Sale price¥49,800

Unheated Brazilian Paraiba Tourmaline 0.047ct loose stone (CuO: 1.6%, MnO: 2.4%) Sale price¥98,000

【スタッフセレクション】　【KEN氏】タンザニア産アイオライト 3.7mm/0.150ctルース（セミオーダーメイドセット）

[Staff Selection] [Mr. KEN] Tanzanian Iolite 3.7mm/0.150ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

[12552306] Iolite 14.158ct loose stone Sale price¥258,000

American barite 2.073ct loose stone Sale price¥18,800

Mica in Quartz 0.758ct Loose Stone Sale price¥6,980

[12551148] Australian black opal 3.890ct loose stone Sale price¥69,800

Brazilian Imperial Topaz 0.431ct Loose Stone (Yurakucho Marui 2024112) Sale price¥9,800

Myanmar Violet Spinel 0.426ct Loose Sale price¥8,800

モザンビーク産パライバトルマリン 0.784ctルース（CuO:0.3%,MnO:1.3%）

[12550887] Paraiba Tourmaline from Mozambique 0.784ct loose stone Sale price¥128,000

{Yurakucho Marui 2024112 takeout} American Anthill Garnet 6mm/0.896ct loose stone Sale price¥29,800

American Benitoite 3.3mm/0.181ct loose stone Sale price¥59,800

Paraiba Tourmaline from Mozambique 0.360ct loose stone Sale price¥18,800

マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 1.079ctルース

Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 6.1mm/1.079ct loose stone Sale price¥18,800

American Red Beryl 0.147ct Loose Sale price¥39,800

非加熱ブラジル産パライバトルマリン 0.065ctルース（CuO:1.6%、MnO:2.4%）

Unheated Brazilian Paraiba Tourmaline 0.065ct loose stone (CuO: 1.6%, MnO: 2.4%) Sale price¥69,800

American Red Beryl 0.132ct Loose Sale price¥33,800

Paraiba Tourmaline from Mozambique 0.412ct loose stone Sale price¥22,800

Bicolor Andesine (Color Change Andesine) 1.416ct Loose Stone Sale price¥18,800

《Yurakucho Marui 2024112 takeout》Brazilian Limonite in Topaz 4.743ct loose stone Sale price¥12,800

Colombian Trapiche Emerald 0.488ct Loose Sale price¥25,800

Paraiba tourmaline 1.190ct raw stone from Brazil Sale price¥4,980

American rare stone 13 stone set (Benitoite, Rhodochrosite) half eternity ring set (2.0mm) Sale price¥158,000

America's three most rare stones 13-stone set (Benitoite, Rhodochrosite, Red Beryl) Half eternity ring set (2.0mm) Sale price¥138,000

Dreamy 13-stone gemstone set (amethyst, pink sapphire, tanzanite, rhodolite garnet) and half eternity ring set (2.0mm) Sale price¥79,800

Spring-colored gemstone 13-stone set (Madagascar fancy color sapphire) and half eternity ring set (2.0mm) Sale price¥79,800

【KEN氏】ブラジル産グリーントルマリン 5.2mm/0.584ctルース（セミオーダーメイドセット）

[Staff Selection] [Mr. KEN] Brazilian Green Tourmaline 5.2mm/0.584ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

【スタッフセレクション】【KEN氏】ブラジル産トパーズ 1.130ctルース（セミオーダーメイドセット）

[Staff Selection] [Mr. KEN] Brazilian Topaz 1.130ct Loose (Semi-Custom Made Set) Sale price¥47,800

【スタッフセレクション】【KEN氏】カンボジア産ブルージルコン 0.953ctルース（セミオーダーメイドセット）

[Staff Selection] [Mr. KEN] Cambodian Blue Zircon 0.953ct Loose (Semi-Custom Made Set) Sale price¥47,800

[On sale 10/23 22:00] Madagascar Padparadscha Sapphire 3.6mm/0.197ct Loose DGL Grade Sale price¥22,800

《Yurakucho Marui 2024112 takeout》Opal 0.459ct loose (egg in opal) Sale price¥8,800

Russian rough diamond (sawable) 0.117ct loose Sale price¥29,800

Russian Diamond Rough (Sawable) 0.091ct Loose (Trigon) Sale price¥22,800

Russian rough diamond (sawable) 0.101ct loose Sale price¥25,800

Brazilian Limonite in Quartz (Aurora Quartz) 7.505ct Loose Stone with Patch Sale price¥6,980

Brazilian dendritic quartz 2.018ct loose stone Sale price¥8,800

Brazilian dendritic quartz 1.738ct loose stone Sale price¥8,800

Pakistani Oil in Quartz 0.438ct Loose Stone Sale price¥9,800

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