Custom Cut

【さくらシェイプ】タンザニア産カラーチェンジサファイア 7.1mm/1.667ctルース

[On sale from 10pm on 4/20] [Sakura Shape] Tanzanian Color Change Sapphire 7.1mm/1.667ct Loose Sale price¥29,800

【さくらシェイプ】ブラジル産グリーントルマリン6.7mm/ 1.057ctルース

[On sale from 10pm on 4/20] [Sakura Shape] Brazilian Green Tourmaline 6.7mm/1.057ct Loose Patch Sale price¥39,800

[On sale at 10pm on 4/20] Sunstone 0.418ct loose stone Sale price¥5,980

[On sale at 10pm on 4/19] Mexican Cantera Opal 3.167ct loose stone (faceted cut) Sale price¥12,800

[On sale at 10pm on 4/16] [Takeshi Yamamoto] Brazilian Ametrine 24.465ct loose stone Sale price¥98,000

[On sale at 10pm on 4/12] Cambodian colorless zircon 0.707ct loose stone Sale price¥8,800

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） 0.696ctルース

[On sale from 10pm on 4/12] Andesine Labradorite (also known as Rainbow Moonstone) 6.0mm/0.696ct loose stone Sale price¥9,800

[On sale at 22:00 on 4/10] Tanzanian Peristerite 5.4mm/0.397ct loose stone Sale price¥7,980

[On sale from 10pm on 4/11] [Cat cut (leopard print)] Amber 8.0mm/0.664ct loose stone Sale price¥9,800

[On sale from 10pm on 4/11] [Cat cut (cheetah pattern)] Amber 8.1mm/0.916ct loose stone Sale price¥9,800

[On sale at 22:00 on 4/17] Cambodian blue zircon 0.338ct loose stone Sale price¥8,800

[On sale at 22:00 on 4/9] Ethiopian Opal 6.0mm/0.584ct Loose Sale price¥12,800

Sold out

【12558636掲載】シベリアンブルークォーツ（合成クォーツ） 1.186ctルース

[12558636] Siberian blue quartz (synthetic quartz) 1.186ct loose stone

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【12558634掲載】シベリアンブルークォーツ（合成クォーツ） 1.180ctルース

[12558634] Siberian blue quartz (synthetic quartz) 1.180ct loose stone

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【12558631掲載】シベリアンブルークォーツ（合成クォーツ） 2.606ctルース

[12558631] Siberian blue quartz (synthetic quartz) 2.606ct loose stone

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[12558629] Siberian blue quartz (synthetic quartz) 2.819ct loose stone

Sold out

【12558627掲載】シベリアンブルークォーツ（合成クォーツ） 4.165ctルース

[12558627] Siberian blue quartz (synthetic quartz) 4.165ct loose stone

[On sale 4/2 at 10pm] Brazilian citrine 2.641ct loose stone Sale price¥8,800

[On sale from 10pm on 4/1] [Sakura Shape] Mexican Opal 8.2mm/1.465ct [Collaboration] Loose Patch Sale price¥45,800

[On sale from 10pm on 4/1] [Takeshi Yamamoto] Brazilian rock crystal 18.130ct loose stone Sale price¥45,800

[On sale at 10pm on March 30th] [Takeshi Yamamoto] Brazilian rose quartz 41.633ct loose stone Sale price¥59,800

[On sale 3/29 at 10pm] Brazilian Ametrine 11.843ct loose stone Sale price¥22,800

[On sale at 10pm on March 29th] Diamond 0.091ct loose stone (G, SI2, sector cut) Sale price¥9,800

[On sale from 10pm on 4/1] Tanzanite from Tanzania 0.250ct loose stone Sale price¥8,800

[On sale from 10pm on 4/1] Emerald 0.138ct loose stone Sale price¥6,980

[On sale at 22:00 on 4/6] Madagascar sphene 0.563ct loose stone Sale price¥9,800

[On sale 3/18 at 22:00] Tanzanite from Tanzania 0.559ct loose stone Sale price¥9,800

[On sale 3/18 at 22:00] Tanzanite from Tanzania 0.479ct loose stone Sale price¥7,980

[On sale 3/18 at 22:00] Tanzanite from Tanzania 0.331ct loose stone Sale price¥5,980

[On sale 3/14 at 22:00] Brazilian Dendritic Agate 0.629ct loose stone Sale price¥7,980

[On sale 3/14 at 10pm] Brazilian Dendritic Agate 0.735ct loose stone Sale price¥7,980

[On sale 3/24 at 10pm] Tanzanite from Tanzania 0.518ct loose stone Sale price¥12,800

[On sale 3/8 at 22:00] Brazilian London Blue Topaz 0.985ct loose stone Sale price¥8,800

[On sale 3/8 at 10pm] Brazilian London Blue Topaz 0.966ct loose stone Sale price¥8,800

[On sale 3/8 at 22:00] Brazilian London Blue Topaz 0.995ct loose stone Sale price¥8,800

[On sale 3/8 at 22:00] Sri Lankan spinel 0.763ct loose stone Sale price¥12,800

[On sale 3/6 at 22:00] Nigerian Morganite 0.397ct loose stone Sale price¥5,980

[On sale 3/12 at 22:00] Sri Lankan blue spinel 0.584ct loose stone Sale price¥12,800

【さくらシェイプ】ブラジル産アメトリン 20mm/21.554ct《コラボ》ルース　ワッペン

[On sale 3/8 at 10pm] [Sakura Shape] Brazilian Ametrine 20mm/21.554ct [Collaboration] Loose Patch Sale price¥98,000

【甲州貴石切子《桜切子》】ブラジル産スカイブルートパーズ 8.169ctルースワッペン

[On sale 3/7 at 10pm] [Koshu Precious Stone Cut Glass "Sakura Cut Glass"] Brazilian Sky Blue Topaz 8.169ct Loose Stone Patch Sale price¥55,800

[On sale 3/7 at 10pm] [Takeshi Yamamoto] Brazilian rock crystal 19.239ct loose stone Sale price¥89,800

[On sale at 22:00 on 3/9] [New Arrival in Tucson] Brazilian Fluorite in Quartz 4.599ct Loose Stone Sale price¥19,800

[On sale at 22:00 on 3/9] [New Arrival in Tucson] Brazilian Fluorite in Quartz 5.402ct Loose Stone Sale price¥35,800

[On sale 3/3 at 22:00] Tanzanite 0.513ct loose stone (sugarloaf cut) from Tanzania Sale price¥9,800

[On sale 3/2 at 22:00] Sri Lankan yellow sapphire 1.103ct loose stone Sale price¥19,800

[On sale 3/2 at 22:00] Myanmar purple spinel 0.311ct loose stone Sale price¥8,800

[On sale 3/2 at 22:00] Blue beryl (Mashish beryl) 0.172ct loose stone Sale price¥8,800

[On sale 3/2 at 22:00] Sri Lankan yellow sapphire 0.375ct loose stone Sale price¥12,800

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