Ruth

【12552583掲載】ライモナイトインクォーツ（オーロラクォーツ） 5.216ctルース

[Star in Cut] Brazilian Limonite in Quartz (Aurora Quartz) 12mm/5.216ct Loose Patch Sale price¥19,800

[On sale from 10pm on 8/17] Bicolor fluorite 6.1mm/0.869ct loose stone Sale price¥6,980

Manganotantalite 0.736ct loose stone from Japan and Germany Sale price¥158,000

Colombian Mica in Emerald 4.6mm/0.210ct Loose Stone Sale price¥12,800

Pink diamond 0.072ct loose (FANCY DEEP PURPLE PINK, I1) Sale price¥69,800

Colombian Trapiche Emerald 0.147ct Loose Sale price¥9,800

Colombian mint color emerald 0.178ct loose stone Sale price¥6,980

非加熱ブラジル産パライバトルマリン 0.037ctルース（CuO:1.9%、MnO:2.3%）

Unheated Brazilian Paraiba Tourmaline 0.037ct loose stone (CuO: 1.9%, MnO: 2.3%) Sale price¥49,800

【12552018掲載】コロンビア産トラピッチェエメラルド 0.416ctルース

Colombian Trapiche Emerald 0.416ct Loose Sale price¥22,800

Colombian mint color emerald 0.198ct loose stone Sale price¥6,980

Ethiopian Opal 5.2mm/0.688ct Loose (Sphere) Sale price¥6,980

非加熱ブラジル産パライバトルマリン 0.067ctルース（CuO:1.4%、MnO:2.4%）

Unheated Brazilian Paraiba Tourmaline 0.067ct loose stone (CuO: 1.4%, MnO: 2.4%) Sale price¥59,800

Russian Diamond Rough (Sawable) 0.105ct Loose (Trigon) Sale price¥28,800

Limited to 7 stones: 1 loose Sri Lankan spinel (lozenge cut) stone. Discounts available for multiple purchases. Sale price¥4,980

Limited to 8 stones: 1 Brazilian Alexandrite loose stone (rose cut, 3.2mm/average 0.12ct) Multiple purchase discounts available Sale price¥11,000

Limited to 9 stones: 1 Brazilian Alexandrite loose stone (rose cut, 3mm/average 0.105ct) Multiple purchase discounts available Sale price¥9,800

Limited to 4 stones: 1 Brazilian Alexandrite loose stone (rose cut, 3.3mm/average 0.13ct) Multiple purchase discounts available Sale price¥12,800

非加熱ブラジル産パライバトルマリン 0.034ctルース（CuO:1.8%、MnO:2.4%）

Unheated Brazilian Paraiba Tourmaline 0.034ct loose stone (CuO: 1.8%, MnO: 2.4%) Sale price¥39,800

【12552015掲載】コロンビア産トラピッチェエメラルド 0.266ctルース

Colombian Trapiche Emerald 0.266ct Loose Sale price¥14,800

【12552125掲載】デトロイトシティ産ロードクロサイト 0.439ctルース

Detroit City Rhodochrosite 4mm/0.439ct Loose Stone Sale price¥8,800

Unheated Brazilian Paraiba Tourmaline 0.071ct loose stone (CuO: 2.1%, MnO: 2.2%) Sale price¥59,800

[Sakura Shape] Indian Iolite 7mm/1.257ct Loose Stone Patch Sale price¥39,800

【さくらシェイプ】YAG（イットリウムアルミニウムガーネット） 7.0mm/1.985ct《コラボ》ルースワッペン

[Sakura Shape] YAG (Yttrium Aluminum Garnet) 7.0mm/1.985ct {Collaboration} Loose Patch Sale price¥29,800

【さくらシェイプ】カンボジア産ブルージルコン 8mm/2.909ct《コラボ》ルースワッペン

[Sakura Shape] Cambodian Blue Zircon 8mm/2.909ct {Collaboration} Loose Patch Sale price¥59,800

[Sakura Shape] Tanzanite from Tanzania 6mm/0.889ct {Collaboration} Loose Patch Sale price¥59,800

[Sakura Shape] Brazilian White Topaz 8.5mm/2.870ct {Collaboration} Loose Patch Sale price¥39,800

Mexican Cantera Opal 4.835ct Loose Sale price¥19,800

Afghanistan Scapolite 0.501ct loose stone (purple fluorescence) Sale price¥7,980

Limited to 7 stones: 1 loose stone of spinel (blue/purple) from Madagascar. Discounts available for multiple purchases. Sale price¥3,980

Sri Lankan Yellow Sapphire 0.555ct Loose Sale price¥12,800

Indian Alexandrite Cat's Eye 0.528ct Loose Stone Sale price¥15,800

Spanish Sphalerite 8mm/2.679ct loose stone Sale price¥38,800

Montana Sapphire 0.244ct Loose (Bi-Color Sapphire) Sale price¥8,800

【12549199掲載】奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 0.543ctルース

[On sale at 10pm on 7/29] 0.543ct loose Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture Sale price¥6,980

Montana Sapphire 0.325ct Loose (Orange Sapphire) Sale price¥8,800

Montana Sapphire 0.261ct Loose (Green Sapphire) Sale price¥8,800

【12549333掲載】ブラジル産メデューサクォーツ（パライバクォーツ） 1.945ctルース

Brazilian Medusa Quartz (Paraiba Quartz) 1.945ct Loose Stone Sale price¥24,800

American Herkimer Diamond 5.6mm/0.516ct Loose Sale price¥9,800

Montana Sapphire 0.294ct Loose (Green Sapphire) Sale price¥9,800

Montana Sapphire 0.270ct Loose (Blue Sapphire) Sale price¥9,800

Brazilian Goshenite 0.771ct loose stone Sale price¥6,980

Sri Lankan Yellow Sapphire 1.101ct Loose Sale price¥19,800

Synthetic Moissanite 10mm/4.121ct Loose Stone (Portuguese Cut) Sale price¥19,800

《Yurakucho Marui 2024112 takeout》Australian black opal 1.015ct loose Sale price¥19,800

Chinese bicolor fluorite 0.950ct loose stone Sale price¥6,980

Brazilian Paraiba Tourmaline 0.200ct loose stone (CuO: 1.7%, MnO: 2.8%) Sale price¥98,000

Brazilian Dolomite 4.070ct Loose Stone, Japan-Germany Mirror Sale price¥98,000

Salt and pepper diamond 0.369ct loose Sale price¥39,800

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