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 "

[Panda cut] Rose quartz 5.081ct loose Sale price¥8,800

[Panda cut] White quartz (milky quartz) 4.477ct loose Sale price¥8,800

Rutilated Quartz (Rutilated Quartz) 5.870ct Loose Sale price¥6,980

【甲州貴石切子】レピドクロサイトインクォーツ 2.488ct《コラボ》ルースワッペン付

[Koshu Precious Stone Kiriko] Lepidocrocite in Quartz 2.488ct《Collaboration》Loose with emblem Sale price¥45,800

【ダンデライオンカット】スモーキークォーツ 25mm/41.745ct《コラボ》ルース（6枚花びら）ワッペン付

[Dandelion Cut] Smoky Quartz 25mm/41.745ct《Collaboration》Loose (6 petals) with patch Sale price¥158,000

【甲州貴石切子】ティンカーベルクォーツ（ピンクファイヤークォーツ） 3.519ctルースワッペン付

[Koshu Precious Stone Kiriko] Tinker Bell Quartz (Pink Fire Quartz) 3.519ct loose with patch Sale price¥39,800

[Mr. Fukasawa Smoky Mushroom] Smoky Quartz 20.250ct loose with patch Sale price¥35,800

【深澤氏ルチルきのこ】ルチルレイテッドクォーツ 29.180ctルースワッペン付

[Mr. Fukazawa's Rutile Mushroom] Rutile Quartz (Rutile-Rated Quartz) 29.180ct Loose Stone with Patch Sale price¥39,800

Rose quartz 18.410ct loose (pineapple cut) Sale price¥9,800

Green quartz 10.330ct loose (pineapple cut) Sale price¥6,980

Rutilated Quartz (Rutilated Quartz) 82.385ct Loose Stone, Japan-Germany Sale price¥39,800

Dumortierite in quartz 4.110ct loose Sale price¥24,800

Rose quartz 8.640ct loose Sale price¥3,980

Brazilian Paraiba tourmaline in quartz 4.070ct loose Sale price¥19,800

Hollandite in quartz 7.300ct loose Sale price¥25,800

【甲州貴石切子】特大スモーキークォーツ 108.336ctルース《コラボ》ワッペン付

[Koshu Precious Stone Kiriko] Extra large smoky quartz 108.336ct loose "Collaboration" with emblem Sale price¥198,000

[Koshu Precious Stone Kiriko] Strawberry Quartz 10.023ct Loose with Patch Sale price¥69,800

K18PGローズクォーツ15.964ct ペンダント（甲州貴石切子） - KARATZ STORE｜カラッツSTORE

[Koshu Precious Stone Kiriko] K18PG Rose Quartz 15.964ct Necklace Japanese-German Appraisal Sale price¥128,000

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1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》

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【宝石商の道具】冷却ヒビ入れ染色クォーツ・天然エメラルド見分け2点セット - KARATZ STORE｜カラッツSTORE

[Jeweler's Tools] Cooling Cracked Dyed Quartz/Natural Emerald Identification 2-piece Set (Discount available for multiple purchases)

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Lymonite in Quartz (Aurora Quartz) 1 stone loose

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Limited to 20 stones, Brazilian dendritic quartz, 1 loose stone, multiple purchase discounts available

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《再販売》ハイヒール（スモーキークォーツ）1石《宝石ハイヒール》》6個 - カラッツSTORE

High heels (smoky quartz) 1 stone (gem high heels)《Multiple purchase discount available》

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[Cat cut] Rose quartz (8mm)《Multiple purchase discount available》

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【さくらインカット】ティンカーベルクォーツ6.480ctルース - カラッツSTORE

[Sakura Incut] Tinkerbell Quartz 6.480ct Loose (Pink Fire Quartz)

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Lavender Quartz 1 stone (Scorollite) 3ct 1 stone《Multiple purchase discount available》

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【12533788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） 4.764ctルース

Tinker Bell Quartz (Pink Fire Quartz) 4.764ct loose

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Tinker Bell Quartz (Pink Fire Quartz) 3.968ct loose

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【カメリアカット】レモンクォーツ8mmルース直筆サイン付&ワッペン付 - カラッツSTORE

[Camellia cut] Lemon quartz 8mm loose with autograph and emblem

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【カラフリ】K18レピドクロサイトインクォーツ2.37ct・ダイヤモンドリング - カラッツSTORE

[Colorful] K18 lepidocrocite in quartz 2.37ct diamond ring

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【甲州貴石切子plusthree】レピドクロサイトインクォーツ 1.973ct《コラボ》ルースワッペン付

[Koshu precious stone Kiriko plusthree] Lepidocrocite in quartz 1.973ct《Collaboration》Loose with emblem

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[On Sale at 10 PM on August 2nd] Brazilian Lavender Quartz (Scorolite) 0.746ct 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） 5.078ctルース

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 5.078ct loose

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Brazilian Tinkerbell Quartz (Pink Fire Quartz) 5.596ct Loose (Faceted)

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Brazilian Dumortierite in Quartz 1.771ct loose stone (faceted cut)

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Brazilian Dumortierite in Quartz 1.834ct loose stone

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Brazilian Tinkerbell Quartz (Pink Fire Quartz) 2.528ct Loose Stone

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Brazilian Dendritic Quartz 1.206ct Loose Stone

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Brazilian dendritic quartz 2.165ct loose stone

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Brazilian Tinkerbell Quartz (Pink Fire Quartz) 5.960ct Loose Stone

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Brazilian Medusa Quartz (Paraiba Quartz) 0.915ct loose stone

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Sri Lankan quartz (rainbow quartz) 138.4g (692ct) loose stone

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Brazilian Dumortierite in Quartz 0.586ct Loose Stone

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Brazilian Paraiba Tourmaline in Quartz 0.628ct Loose Stone

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Brazilian Dumortierite in Quartz 1.418ct loose stone

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Brazilian Dumortierite in Quartz 1.341ct 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.