colored stone loose

A list of colored stones and loose gemstones.

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Paraiba tourmaline from Mozambique 0.30ct loose

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Spessartine garnet 3.00ct loose

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Bicolor tourmaline 1.293ct loose

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Thai pigeon blood ruby 0.510ct loose AIGS

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Unheated cornflower blue sapphire 0.230ct loose AIGS

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【さくらインカット】ティンカーベルクォーツ 3.670ctルース - カラッツSTORE

[Sakura Incut] Tinkerbell Quartz 3.670ct Loose (Pink Fire Quartz)

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Peristerite 0.690ct loose Japanese-German book

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【甲州貴石切子】アイオライトサンストーン 1.510ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Iolite Sunstone 1.510ct Loose

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[Koshu precious stone cut] Opal 0.760ct loose

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[Kikyo cut] Oil-in quartz 4.010ct loose [Shimizu Precious Stone Representative Yukio Shimizu] Patch included

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[Koshu Precious Stone Kiriko] Moonstone 3.400ct loose

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Yellow sphalerite 0.409ct loose

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Bicolor Sphalerite 4.230ct loose

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Oregon Sunstone 2.750ct loose (vortex cut)

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Topaz 2.380ct loose (vortex cut)

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Trapiche sapphire 6.914ct loose

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Russian demantoid garnet (horsetail recognized) 0.450ct loose

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Russian demantoid garnet (horsetail recognized) 0.290ct loose

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[Konpeito] Chrysoprase 2.460ct loose

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【甲州貴石切子】フローライトインクォーツ 4.550ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Fluorite in Quartz 4.550ct Loose

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Russian demantoid garnet cat's eye (horsetail recognized) 1.860ct loose

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Russian demantoid garnet (horsetail recognized) 0.410ct loose

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[Koshu Precious Stone Kiriko] Ametrine 3.400ct loose

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[Koshu Precious Stone Kiriko] Tanzanite 1.740ct loose

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【甲州貴石切子】アルマンディンガーネット 2.950ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Almandine Garnet 2.950ct Loose with Patch

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[Koshu Precious Stone Kiriko] Bicolor Amethyst 3.530ct Loose Color with Patch

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[Koshu Precious Stone Kiriko] Citrine 3.850ct loose

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[Koshu Precious Stone Kiriko] Lemon Quartz 3.890ct Loose

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Apatite 1.040ct loose (briolette cut)

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【スターインカット】オレゴンサンストーン 2.290ctルース - カラッツSTORE

[Star in cut] Oregon sunstone 2.290ct loose

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【さくらインカット】オレゴンサンストーン 2.120ctルース - カラッツSTORE

[Sakura Incut] Oregon Sunstone 9mm Loose with Patch

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【さくらインカット】オレゴンサンストーン 1.470ctルース - カラッツSTORE

[Sakura Incut] Oregon Sunstone 1.470ct Loose

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【ダンデライオンカット】ブルートパーズ 11.230ctルース - カラッツSTORE

[Dandelion cut] Blue topaz 11.230ct loose

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Bicolor tourmaline 1.536ct loose Japanese-German edition

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【ダンデライオンカット】タンザナイト 1.20ctルース - カラッツSTORE

[Dandelion cut] Tanzanite 7mm/1.20ct loose with patch

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【ダンデライオンカット】ラベンダータンザナイト6mmルース - カラッツSTORE

[Dandelion cut] Lavender tanzanite 6mm loose with patch

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[Dandelion cut] Tanzanite 6mm loose with patch

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Russian demantoid garnet (horsetail recognized) 0.077ct loose

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Russian oil-free emerald 0.30ct loose with GIA

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の取り組みと社会貢献

業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。

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.