5.0ct - 10.0ct

[On Sale at 10pm on October 5th] Brazilian Aquamarine 8.858ct Loose Stone Sale price¥198,000

[Posted 12543726] Hemimorphite 9.282ct loose Sale price¥59,800

[Posted 12543724] Hemimorphite 9.286ct loose Sale price¥59,800

Celestite from Madagascar 7.080ct loose Japanese and German Sale price¥98,000

[On Sale 10/7 at 10 PM] [Cat Cut] Brazilian Dendritic Quartz 6.775ct Loose Stone Sale price¥15,800

[On Sale at 10 PM on October 7th] [Rouge Cut] 5.952ct Loose Almandine Garnet from Mozambique Sale price¥15,800

[On sale from 10/7 at 10pm] [Rouge cut] 5.841ct loose almandine garnet from Mozambique Sale price¥14,800

[Available at 10 PM on September 28th] American Benitoite 2.2mm/0.270ct Loose Stone (Gradation Set) Sale price¥69,800

[Sold at 10 PM on September 28th] Set of 2 Rutile Stones, 6.213ct (Rough Stone + Loose Stone) Sale price¥59,800

【カメリアカット】カナダ産ラブラドライト（通称名：ブルームーンストーン） 14mm/9.947ct《コラボ》ルース - カラッツSTORE

[Camellia cut] Labradorite from Canada (common name: Blue Moonstone) 14mm/9.947ct《Collaboration》 Loose Sale price¥29,800

【カメリアカット】カナダ産ラブラドライト（通称名：ブルームーンストーン） 12mm/5.594ct《コラボ》ルースワッペン付 - カラッツSTORE

[Camellia cut] Labradorite from Canada (common name: Blue Moonstone) 12mm/5.594ct《Collaboration》 Loose with emblem Sale price¥25,800

[Koshu Precious Stone Kiriko]《Moon-shaped Kiriko》Citrine 6.097ct《Collaboration》With loose patch Sale price¥69,800

[On Sale at 10pm on October 1st] Australian Boulder Opal 9.120ct Loose Sale price¥98,000

[On Sale at 10pm on October 1st] Oligoclase Sunstone 6.080ct Loose Stone Sale price¥6,980

Mexican fire agate 5.519ct loose Sale price¥12,800

Green sapphire 7.545ct loose (spade cut) Sale price¥59,800

[Koshu Precious Stone Kiriko] Fluorite from Colombia 7.240ct loose with emblem Sale price¥29,800

[Koshu Precious Stone Kiriko] Bicolor Fluorite 6.980ct Loose with Patch Sale price¥59,800

【ダンデライオンカット】ロンドンブルートパーズ 6.570ctルース - カラッツSTORE

[Dandelion Cut] London Blue Topaz 6.570ct Loose with Patch Sale price¥55,800

[Sakura Incut] Ametrine 9.740ct loose with patch Sale price¥59,800

[On sale at 10pm on September 17th] Oligoclase Sunstone 6.432ct Loose Stone Sale price¥25,800

【さくらインカット】スカイブルートパーズ 12mmルースワッペン付 - カラッツSTORE

[Sakura Incut] Sky Blue Topaz 12mm Loose with Patch Sale price¥39,800

Opal 6.560ct loose Sale price¥39,800

[Posted 12533051] Cantera Opal 8.970ct Loose Sale price¥12,800

Cantera Opal 5.750ct loose Sale price¥18,800

Green tourmaline cat's eye 6.480ct loose Sale price¥8,800

[On Sale at 10 PM on August 16th] Mexican Cantera Opal 5.882ct Loose Sale price¥39,800

[Available at 10 PM on August 13th] [Camellia Cut] Ethiopian Opal 5.083ct/14mm Loose Sale price¥69,800

[On Sale at 10 PM on August 7th] Colombian Emerald Rough Stone 6.590ct Sale price¥15,800

Pink fluorite 6.530ct loose Sale price¥5,980

Sold out

Green tourmaline 9.537ct loose

Pink tourmaline cat's eye 5.460ct loose Sale price¥8,800

[12541081 published] Emerald 9.380ct rough stone Sale price¥4,980

Synthetic Moissanite 13mm/8.154ct Loose Stone Sale price¥39,800

【甲州貴石切子plusthree】ローズクォーツ 6.330ctルースワッペン付

[Koshu precious stone Kiriko plusthree] Rose quartz 6.330ct loose with patch Sale price¥25,800

【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¥98,000

【甲州貴石切子plusthree】ピクチャーメノウ 8.243ctルースワッペン付

[Koshu precious stone Kiriko plusthree] Picture agate 8.243ct loose with patch Sale price¥25,800

【甲州貴石切子plusthree】ピクチャーメノウ 8.051ctルースワッペン付

[Koshu precious stone Kiriko plusthree] Picture agate 8.051ct loose with patch Sale price¥25,800

Mexican cantera opal 8.454ct loose Sale price¥3,980

【甲州貴石切子plusthree】コロンビア産パイライトインエメラルド 5.076ctルースワッペン付

[Koshu Precious Stone Kiriko PlusThree] Colombian Pyrite in Emerald 5.076ct Loose with Patch Sale price¥98,000

【甲州貴石切子】ライモナイトインクォーツ（オーロラクォーツ） 8.066ctルース

[Koshu Precious Stone Cutting] Brazilian Limonite in Quartz (Aurora Quartz) 8.066ct Loose Sale price¥49,800

[Koshu Precious Stone Kiriko] Ametrine 8.964ct《Collaboration》Loose with emblem Sale price¥69,800

Playnight 5.099ct loose Sale price¥5,980

[Koshu precious stone Kiriko plusthree] Ametrine 8.902ct loose with patch Sale price¥39,800

【甲州貴石切子plusthree】スモーキークォーツ 5.074ctルースワッペン付

[Koshu precious stone Kiriko plusthree] Smoky quartz 5.074ct loose with patch Sale price¥25,800

Brazilian dumortierite in quartz 5.154ct loose Sale price¥15,800

Brazilian dumortierite in quartz 6.727ct loose Sale price¥25,800

Brazilian Pink Tourmaline 6.549ct Loose Stone (Elbaite Liddicoatite Tourmaline) Nikkeikan Sale price¥188,000

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.

KARATZ・Five Commitments

So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.

KARATZ's Initiatives and Social Contributions

We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.

KARATZ Books

These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.

jeweler's tools

For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.