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 "

Limited to 10 stones: One Saint-Jay cut amethyst (5.0-5.5mm, special cut round) loose stone. Discounts available for multiple purchases. Sale price¥3,980

Limited to 7 stones: Brazilian Limonite in Quartz, 1 loose stone (average 6 carats) [Multiple purchase discounts available] Sale price¥5,980

Limited to 5 stones: 1 Brazilian Rhodonite in Quartz (faceted cut) (Multiple purchase discounts available) Sale price¥4,980

[Available at 10 PM on February 2nd] Limited to 13 stones. Newly arrived in Tucson: Brazilian Dumortierite in Quartz, 1.1 carats average cabochon cut. Discounts available for multiple purchases. Sale price¥4,980

Madeira Citrine from Brazil (6mm, round cut, November birthstone) {Multiple purchase discounts available} Sale price¥4,980

November birthstone citrine rough and loose stone set of 2 (Madeira citrine, from Brazil) {Multiple purchase discounts available} {For beginners} Sale price¥3,980

[Limited to 9 stones] Brazilian green quartz 1 stone loose (10mm) [Multiple purchase discount available] Sale price¥3,980

《Limited to 6 stones》 1 stone loose green quartz from Brazil (8mm, concave cut) 《Discount available for multiple purchases》 Sale price¥3,980

[May 3, 10 PM JST Release] Dendritic Agate (Dendritic Quartz) Gacha - 1 Stone Loose Piece "Tucson New Arrivals / Limited 7 Stones" (Multi-Purchase Discount Available) Sale price¥2,980

Mica in Quartz 0.865ct Loose Stone Sale price¥5,980

Mica in Quartz 0.736ct loose stone Sale price¥5,980

Mica in Quartz 0.710ct Loose Sale price¥5,980

[On sale May 2nd at 10 PM] K18 Amethyst Chain Ring Sale price¥18,800

ブラジル産マイカインローズクォーツ（雲母インローズクォーツ） 4.040ctルース

[Sale at 10 PM on May 18th] Brazilian Mica In Rose Quartz (Muscovite In Rose Quartz) 4.040ct Loose Stone Sale price¥5,980

ブラジル産マイカインローズクォーツ（雲母インローズクォーツ） 7.882ctルース

[On sale May 6th at 10 PM] Brazilian Mica In Rose Quartz (Mica in Rose Quartz) 7.882ct Loose Stone Sale price¥9,800

【12562772掲載】ブラジル産マイカインローズクォーツ（雲母インローズクォーツ） 7.044ctルース

Brazilian Mica-in-Rose Quartz (Mica-included Rose Quartz) 7.044ct Loose Gemstone Sale price¥8,800

Brazilian Mica in Rose Quartz Loose Stone 3.245ct Sale price¥5,980

Brazilian Mica in Rose Quartz 8.773ct Loose Stone Sale price¥9,800

【12562768掲載】ブラジル産マイカインローズクォーツ（雲母インローズクォーツ） 8.477ctルース

Brazilian Mica in Rose Quartz Cabochon, 8.477ct Sale price¥11,000

Mica in Quartz 0.594ct loose stone Sale price¥5,980

Lavender quartz (scorolite) 1.130ct loose stone Sale price¥5,980

Lavender quartz (scorolite) 2.181ct loose stone Sale price¥8,800

Lavender quartz (scorolite) 2.740ct loose stone Sale price¥8,800

[Koshu Precious Stones Plusthree] Lavender Quartz (Scorolite) 1.761ct Loose Stone Sale price¥29,800

Cristobalite in Quartz 2.417ct Loose Stone Sale price¥8,800

Lepidocrocite in quartz 0.308ct loose Sale price¥6,980

Lepidocrocite in quartz 1.087ct loose Sale price¥5,980

Medusa Quartz (Paraiba Quartz) 1.855ct loose Sale price¥18,800

【12562837掲載】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） 6.020ctルース

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 6.020ct Loose Stone Sale price¥15,800

[Calafuri] K18WG Green Quartz Pendant Top (Necklace Top) Sale price¥59,800

K18 Rock Crystal Ring Sale price¥42,800

【12555695掲載】ブラジル産パライバトルマリンインクォーツ 0.313ctルース

Brazilian Paraiba Tourmaline In Quartz 0.50mm/.313ct Loose Sale price¥15,800

3.020 ct Pakistani emerald in quartz loose gemstone Sale price¥18,800

Brazilian Dumortierite in Quartz 0.387ct loose stone Sale price¥3,980

Brazilian Paraiba tourmaline in quartz 0.819ct loose Sale price¥14,800

Strawberry quartz from Kazakhstan 0.915ct loose Sale price¥6,980

《New from Tucson! Limited 11 Stones》Faceted Dumortierite in Quartz from Brazil《Multi-purchase discount available》 Sale price¥5,980

Mica in Quartz 0.864ct Loose Stone Sale price¥5,980

Mica in Quartz 0.760ct Loose Sale price¥5,980

Mica in Quartz 0.588ct Loose Stone Sale price¥5,980

Medusa Quartz (Paraiba Quartz) 1.666ct loose Sale price¥18,800

Brazilian Medusa Quartz (Paraiba Quartz) 0.400ct Loose Sale price¥6,980

Lepidocrocite in Quartz 0.768ct Loose Sale price¥7,980

Lepidocrocite in Quartz 0.241ct Loose Stone Sale price¥6,980

Lepidocrocite in Quartz 0.382ct Loose Sale price¥6,980

Brazilian Medusa Quartz (Paraiba Quartz) 1.529ct Loose Stone Sale price¥6,980

Brazilian Medusa Quartz (Paraiba Quartz) 1.241ct Loose Stone Sale price¥6,980

Brazilian Medusa Quartz (Paraiba Quartz) 1.405ct Loose Stone Sale price¥8,800

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.