quartz

Quartz is a relatively well-known gemstone, with many types and quantities in circulation. It is broadly classified into two types: transparent to translucent single crystal and translucent to opaque polycrystal. Single crystal stones include amethyst, citrine, and rose quartz, while polycrystalline stones include chalcedony, agate, and jasper. Many contain other minerals and liquids as inclusions.

Karatz GemMagazine
" quartz "

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Brazilian Dumortierite in Quartz 2.870ct loose stone

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Tanzanian Hematite in Quartz 2.150ct Loose Stone (Red Fuji Quartz)

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[Koshu Precious Stone Kiriko] Dumortierite in Quartz 10.068ct loose with emblem

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[Cat cut] Dendritic quartz 4.419ct loose

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ブラジル産ティンカーベルクォーツ（ピンクファイヤークォーツ） 8.775ctルース

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 8.775ct loose

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Oil-in-quartz 0.629ct rough stone from Pakistan (twins, moving bubble type)

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Lepidocrocite in quartz 26.427ct loose

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K18PGティンカーベルクォーツ（ピンクファイヤークォーツ）1.512ct リング - カラッツSTORE

K18PG Tinker Bell Quartz (Pink Fire Quartz) 1.512ct Ring

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【12539375掲載】スリランカ産ガーネットインクォーツ 1.099ctルース

Garnet-in-Rose Quartz from Sri Lanka 1.099ct Ruth Japanese-German Edition

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【甲州貴石切子plusthree】デンドリティッククォーツ 17.110ctルースワッペン付

[Koshu precious stone Kiriko plusthree] Dendritic quartz 17.110ct loose with patch

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Tinker Bell Quartz (Pink Fire Quartz) 3.247ct loose

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【12533686掲載】ティンカーベルクォーツ（ピンクファイヤークォーツ） 4.178ctルース

Tinker Bell Quartz (Pink Fire Quartz) 4.178ct loose

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【桔梗カット】ティンカーベルクォーツ 5.050ctルース《シミズ貴石代表・清水幸雄氏》

[Kikyo Cut] Tinker Bell Quartz 5.050ct Loose《Mr. Yukio Shimizu, Representative of Shimizu Precious Stones》 Patch included

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

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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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[Koshu Precious Stone Kiriko] Lemon Quartz 3.890ct Loose

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【甲州貴石切子】レピドクロサイトインクォーツ 1.590ctルース - カラッツSTORE

[Koshu Precious Stone Kiriko] Lepidocrocite in Quartz 1.590ct Loose

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[Konpeito] Milky quartz 3.260ct loose

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Dumortierite in quartz 4.994ct loose

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[Koshu Precious Stone Kiriko] Dumortierite in Quartz

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K18レモンクォーツ16.465ct・ダイヤモンドペンダント（甲州貴石切子） - KARATZ STORE｜カラッツSTORE

[Koshu Precious Stone Kiriko] K18 Lemon Quartz 16.465ct Pendant Japanese-German Appraisal

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K18ラベンダークォーツ（スコロライト）4.00ct ペンダントトップ - KARATZ STORE｜カラッツSTORE

K18 Lavender Quartz (Scololite) 4.00ct Pendant Top

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【8/27 22時販売】《限定7石》ブラジル産ライモナイトインクォーツ1石ルース（平均6ct）《複数購入割引有》 Sale price¥5,980

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[On Sale at 10 PM on August 11th] Brazilian Medusa Quartz (Paraiba Quartz) 0.454ct Loose Stone

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ブラジル産ティンカーベルクォーツ（ピンクファイヤークォーツ） 3.086ctルース

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 3.086ct loose

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【甲州貴石切子plusthree】メデューサクォーツ（パライバクォーツ） 7.432ctルースワッペン付

[Koshu Precious Stones Plusthree] Brazilian Medusa Quartz (Paraiba Quartz) 7.432ct Loose Patch

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Brazilian Dendritic Quartz 7.788ct Loose Stone

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Brazilian Dumortierite in Quartz 7.653ct loose stone

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Brazilian Tinkerbell Quartz (Pink Fire Quartz) 3.070ct Loose Stone

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Brazilian Dumortierite in Quartz 2.421ct loose stone

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Brazilian Dumortierite in Quartz 3.240ct Loose Stone

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Brazilian Medusa Quartz (Paraiba Quartz) 1.716ct loose stone

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Brazilian Paraiba Tourmaline in Quartz 0.634ct Loose Stone

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Brazilian Paraiba Tourmaline in Quartz 2.915ct loose stone

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Brazilian Paraiba Tourmaline in Quartz 4.3mm/0.307ct Loose Stone

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Canna Brazilian dendritic quartz 2.389ct loose stone

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[Koshu Precious Stones plusthree] Brazilian rose quartz 8.940ct loose stone

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Brazilian Tinkerbell Quartz (Pink Fire Quartz) 3.616ct Loose Stone

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Brazilian Dendritic Quartz 1.547ct Loose Stone

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Brazilian Garden Quartz 11.6mm/6.760ct Loose Stone

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Brazilian Rose Quartz 33.630ct Loose Stone

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Brazilian Dumortierite in Quartz 1.512ct loose stone

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Brazilian Tinkerbell Quartz (Pink Fire Quartz) 3.450ct Loose Stone

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Brazilian dendritic quartz 1.710ct loose stone

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Brazilian dendritic quartz 4.480ct loose stone

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Brazilian Medusa Quartz (Paraiba Quartz) 2.310ct Loose Stone

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Brazilian Medusa Quartz (Paraiba Quartz) 0.702ct Loose Stone

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.