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 "

Brazilian dumortierite in quartz 4.592ct loose Sale price¥15,800

Brazilian Paraiba tourmaline in quartz 2.954ct loose Sale price¥45,800

Brazilian Medusa Quartz (Paraiba Quartz) 3.919ct loose Sale price¥8,800

【甲州貴石切子plusthree】パイライトインクォーツ 12.164ctルースワッペン付

[Koshu precious stone Kiriko plusthree] Pyrite in quartz 12.164ct loose with patch Sale price¥29,800

Quartz 96.732ct loose (explosion crystal) Sale price¥4,980

ティンカーベルクォーツ（ピンクファイヤークォーツ） 8.5mm/1.715ctルース

Tinker Bell Quartz (Pink Fire Quartz) 8.5mm/1.715ct Loose Sale price¥29,800

Rutilated Quartz (Rutilated Quartz) 6.402ct Loose Sale price¥6,980

Lepidocrocite in quartz 1.555ct loose Sale price¥15,800

Lepidocrocite in Quartz 1.227ct Loose Stone Sale price¥12,800

Lepidocrocite in quartz 0.692ct loose Sale price¥8,800

ティンカーベルクォーツ（ピンクファイヤークォーツ） 1.664ctルース（ファセットカット）

Tinker Bell Quartz (Pink Fire Quartz) 1.664ct Loose (Faceted Cut) Sale price¥19,800

Dendritic quartz 7.997ct loose Sale price¥9,800

Brazilian lepidocrocite in quartz 2.589ct loose Sale price¥5,980

Brazilian lepidocrocite in quartz 2.225ct loose Sale price¥4,980

Brazilian lepidocrocite in quartz 1.621ct loose Sale price¥3,980

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

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

【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

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

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

Rose quartz 8.640ct loose Sale price¥3,980

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

Sold out

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

Sold out

【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)

Sold out

Lymonite in Quartz (Aurora Quartz) 1 stone loose

Sold out

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

Sold out

《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》

Sold out

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

Sold out

【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)

Sold out

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

Sold out

【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

Sold out

Tinker Bell Quartz (Pink Fire Quartz) 3.968ct loose

Sold out

【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

Sold out

【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

Sold out

【12558125掲載】ブラジル産フローライトインクォーツ 3.507ctルース

[On Sale at 10pm on October 5th] Brazilian Fluorite in Quartz 3.507ct Loose Stone

Sold out

Tinker Bell Quartz (Pink Fire Quartz) 5.001ct loose

Sold out

Brazilian kyanite in quartz 3.752ct loose

Sold out

Brazilian Medusa Quartz (Paraiba Quartz) 2.248ct loose

Sold out

Rutilated Quartz (Rutilated Quartz) 5.870ct Loose

Sold out

[On Sale at 10 PM on September 22nd] Brazilian Dumortierite in Quartz 1.583ct Loose Stone (Faceted)

Sold out

【12558127掲載】ブラジル産フローライトインクォーツ 3.963ctルース

[On Sale at 10 PM on October 3rd] Brazilian Fluorite in Quartz 3.963ct Loose Stone

Sold out

【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

Sold out

[Mr. Fukasawa Smoky Mushroom] Smoky Quartz 20.250ct loose with patch

Sold out

【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

Sold out

[On Sale at 10 PM on September 16th] Brazilian Dumortierite in Quartz 4.467ct Loose Stone

coming soon

【12560383掲載】シベリアンブルークォーツ（合成クォーツ） 0.900ctルース

Lottery Sale 3 [Reserved for Winners] [Published 12560383] [Yukinko Cut] Siberian Blue Quartz (Synthetic Quartz) 0.900ct Loose Stone Sale price¥45,800

Sold out

[Yukinko Cut] Siberian Blue Quartz (Synthetic Quartz) 0.894ct Loose Stone

Sold out

[On Sale at 10 PM on September 5th] Brazilian Dumortierite in Quartz 5.698ct 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'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.