Ruth

[On sale at 22:00 on 6/8] Sri Lankan bicolor sapphire 1.020ct loose stone Sale price¥59,800

[On sale from 10pm on 6/8] [Koshu Precious Stones Plusthree] Brazilian Citrine 0.912ct Loose Patch Sale price¥19,800

[On sale from 10pm on 6/8] [Koshu Precious Stones Plusthree] Brazilian Citrine 1.121ct Loose Stone Patch Sale price¥19,800

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） 0.790ctルース

[On sale 6/8 at 22:00] Madagascar Andesine Labradorite (also known as Rainbow Moonstone) 0.790ct loose stone Sale price¥4,980

[On sale at 22:00 on 6/8] Brazilian bicolor tourmaline 0.716ct loose stone (rose cut) Sale price¥6,980

[On sale at 22:00 on 6/8] Afghanistan Hackmanite 0.212ct loose stone Sale price¥8,800

【KEN氏】メキシコ産ファイアオパール 1.190ctルース - カラッツSTORE

[On sale 6/8 at 22:00] Mexican Fire Opal 1.190ct Loose (Contralus Opal) Sale price¥12,800

【KEN氏】アフリカ産パーティカラートルマリン 0.968ctルース（トリカラートルマリン） - カラッツSTORE

[On sale at 22:00 on 6/8] African parti-color tourmaline 0.968ct loose stone (tri-color tourmaline) Sale price¥14,800

[On sale at 22:00 on 6/8] Kenyan Gold Sheen Sapphire 2.2mm/0.064ct Loose Sale price¥5,980

ブラジル産パーティカラーパライバトルマリン 0.203ctルース（CuO:1.7%、MnO:2.9%）

[On sale at 22:00 on 6/8] Brazilian parti-color Paraiba tourmaline 0.203ct loose stone (CuO: 1.7%, MnO: 2.9%) Sale price¥59,800

【さくらインカット】アベンチュリンアクアマリン 7.7mm/1.240ctルース《コラボ》ワッペン付 - カラッツSTORE

[On sale at 22:00 on 6/8] [Sakura Incut] Brazilian Aventurine Aquamarine 7.7mm/1.240ct Loose Stone [Collaboration] Patch Sale price¥29,800

【さくらインカット】レピドクロサイトインクォーツ 7mm/1.007ct《コラボ》ルースワッペン

[On sale from 22:00 on 6/8] [Sakura in cut] Brazilian Lepidocrocite in Quartz 7mm/1.007ct [Collaboration] Loose Patch Sale price¥25,800

インターナリーダイヤモンド 0.25ルース(E, IF, 3Excellent) GIA

[On sale at 22:00 on 6/8] Internal Diamond 0.25 Loose (E, IF, 3Excellent) GIA Sale price¥69,800

[On sale at 10pm on June 8th] Diamond (cabochon cut) 0.401ct loose (star depending on the angle) Sale price¥49,800

[On sale at 22:00 on 6/8] Bicolor sapphire 5.640ct loose stone with certificate Sale price¥98,000

[On sale at 22:00 on 6/8] Brazilian green tourmaline 4.613ct loose stone Sale price¥39,800

[6/7 22:00 Sale] Ethiopian Opal 7.2mm/0.910ct Loose Stone Sale price¥6,980

[On sale 6/6 at 22:00] Brazilian Rainbow Aquamarine 3.308ct Loose Sale price¥29,800

[On sale 6/6 at 22:00] Brazilian Rainbow Aquamarine 3.188ct Loose Sale price¥22,800

[On sale 6/6 at 22:00] Brazilian Rainbow Aquamarine 2.698ct Loose Sale price¥22,800

[On sale 6/4 at 22:00] Dominican Republic Conch Pearl (with flame pattern) 0.840ct loose Sale price¥12,800

[On sale from 10pm on 6/4] [Koshu Precious Stones plusthree] Brazilian Dendritic Quartz 14.680ct Loose Patch Sale price¥29,800

[On sale 6/4 at 22:00] Madagascar pink sapphire 0.301ct loose stone (silky pink) Sale price¥12,800

[On sale at 22:00 on 6/4] Namibian Jeremejevite 0.055ct loose stone Sale price¥5,980

[On sale 6/4 at 22:00] Namibian Jeremejevite 2.8mm/0.094ct loose stone Sale price¥5,980

[On sale at 22:00 on 6/4] Padparadscha Sapphire 6.4mm/1.208ct Loose Stone Medium Treasure Mirror Sale price¥328,000

[On sale at 22:00 on 6/7] Tanzanian bicolor tanzanite 1.284ct loose stone Sale price¥29,800

[On sale 6/7 at 22:00] Indonesian Parasitic Peridot Cat's Eye 0.797ct Loose Stone Sale price¥268,000

[On sale at 22:00 on 6/7] 0.257ct loose stone of Jeremejevite from Namibia Sale price¥39,800

[On sale at 22:00 on 6/7] Namibian Jeremejevite 0.171ct loose stone Sale price¥39,800

[On sale at 22:00 on 6/7] Namibian Jeremejevite 0.127ct loose stone Sale price¥29,800

[On sale at 22:00 on 6/7] Pakistani axinite 0.500ct loose stone (green tint) Sale price¥12,800

[On sale at 22:00 on 6/7] Pakistani axinite 1.190ct loose stone (green tint) Sale price¥39,800

[On sale at 22:00 on 6/7] Indonesian Parasite Peridot (Parasitetic Peridot) 0.191ct Loose Stone Sale price¥69,800

[On sale 6/7 at 22:00] Sri Lankan Cat's Eye Sapphire 2.177ct Loose Sale price¥98,000

[On sale at 22:00 on 6/7] Sri Lankan saffron 0.121ct loose stone Sale price¥18,800

[On sale 6/7 at 22:00] Madagascar purple sapphire 4.5mm/0.393ct loose stone Sale price¥18,800

[On sale 6/7 at 22:00] Madagascar purple sapphire 4.5mm/0.435ct loose stone Sale price¥18,800

[On sale at 22:00 on 6/7] Brazilian Santa Maria Aquamarine 0.968ct loose stone Sale price¥69,800

[On sale at 22:00 on 6/7] Dendritic Opal 3.041ct Loose Sale price¥18,800

[On sale 6/7 at 22:00] Madagascar Golden Iolite (Cordierite) 7.6mm/1.477ct Loose Stone Sale price¥29,800

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.146ctルース

[On sale at 22:00 on 6/8] Madagascar Bekiri Blue Garnet (Color Change Garnet) 3.1mm/0.146ct Loose Stone Sale price¥15,800

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.141ctルース

[On sale at 22:00 on 6/8] Madagascar Bekiri Blue Garnet (Color Change Garnet) 3.1mm/0.141ct Loose Stone Sale price¥15,800

[On sale at 22:00 on 6/7] Sri Lankan zircon 3.614ct loose stone Sale price¥29,800

[On sale at 22:00 on 6/8] Tanzanite from Tanzania 5.8mm/0.803ct loose stone Sale price¥35,800

[On sale at 22:00 on 6/7] Myanmar color change zircon 0.421ct loose stone Sale price¥39,800

[On sale at 22:00 on 6/7] Myanmar color change zircon 0.720ct loose stone Sale price¥69,800

[On sale at 22:00 on 6/8] Pakistani Bastnaesite 0.377ct loose stone Sale price¥18,800

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