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 "

【12561958掲載】ブラジル産デュモルチェライトインクォーツ 1.112ctルース

Brazilian Dumortierite in Quartz 1.112ct Loose Gemstone (Faceted Cut) Sale price¥11,000

Brazilian Dumortierite in Quartz 0.937ct Loose (Faceted) Sale price¥9,800

【12561954掲載】ブラジル産デュモルチェライトインクォーツ 3.009ctルース

Brazilian Dumortierite in Quartz 3.009ct Loose Stone Sale price¥29,800

【12561926掲載】ブラジル産デュモルチェライトインクォーツ 2.282ctルース

Brazilian Dumortierite in Quartz 2.282ct Loose Gemstone Sale price¥18,800

【12561911掲載】ブラジル産ブラジル産エレスチャルアメジスト 15.928ctルース

Brazilian Elestial Amethyst from Brazil, 15.928ct Loose Stone Sale price¥45,800

【12561507掲載】ブラジル産ラベンダークォーツ（スコロライト） 0.716ctルース

Brazilian Lavender Quartz (Scolite) 0.716ct Loose Gemstone Sale price¥9,800

Pakistani Oil in Quartz 0.651ct Loose Stone Sale price¥7,980

Pakistani Oil in Quartz 0.443ct Loose Stone Sale price¥5,980

Oil-in-quartz 24.653ct rough stone from Madagascar Sale price¥7,980

Oil-in-quartz 31.973ct rough stone from Madagascar Sale price¥8,800

Oil-in-quartz 30.677ct rough stone from Madagascar Sale price¥8,800

Brazilian Sunstone 5.1mm/0.532ct Loose Stone (Rose Quartz) Sale price¥5,980

Brazilian Sunstone 6.2mm/0.896ct Loose (Rose Quartz) Sale price¥5,980

Brazilian Medusa Quartz (Paraiba Quartz) 3.9mm/0.237ct Loose Sale price¥15,800

[Moonsteiner] Pyrite in Quartz 8.099ct Sale price¥59,800

Pyrite in quartz 3.492ct loose Sale price¥8,800

Pyrite in quartz 15.971ct loose Sale price¥12,800

Oil-in-quartz 22.073ct rough stone from Madagascar Sale price¥4,980

Pakistani oil-in quartz 0.535ct loose Sale price¥14,800

Brazilian Dumortierite in Quartz 0.382ct Loose Stone Sale price¥9,800

Brazilian Pyrite in Quartz 4.153ct Loose Stone Sale price¥11,000

Brazilian Pyrite in Quartz 6.992ct Loose Stone Sale price¥18,800

Brazilian kyanite in quartz 13.740ct loose Sale price¥29,800

Brazilian kyanite in quartz 4.770ct loose Sale price¥12,800

Brazilian Medusa Quartz (Paraiba Quartz) 10.298ct loose Sale price¥7,980

Brazilian Medusa Quartz (Paraiba Quartz) 5.809ct loose Sale price¥6,980

Brazilian Medusa Quartz (Paraiba Quartz) 3.441ct loose Sale price¥3,980

Brazilian Medusa Quartz (Paraiba Quartz) 2.757ct loose Sale price¥3,980

[12/7 22:00] Brazilian Dumortierite in Quartz 16.250ct Loose Stone Sale price¥9,800

[12/9 22:00] Brazilian Lavender Quartz (Scorolite) 0.994ct Loose Stone Sale price¥8,800

Synthetic quartz 0.430ct loose stone (synthetic green quartz) Sale price¥6,980

Brazilian Dumortierite in Quartz 1.131ct Loose Stone Sale price¥12,800

Brazilian Paraiba tourmaline in quartz 2.954ct loose Sale price¥39,800

Brazilian Medusa Quartz (Paraiba Quartz) 3.919ct loose Sale price¥6,980

Brazilian Dumortierite in Quartz 10.0mm/5.357ct Loose Stone Sale price¥39,800

Brazilian Amethyst 0.256ct Loose Stone Sale price¥8,800

Brazilian rose quartz 4.019ct loose stone Sale price¥11,000

Brazilian rose quartz 1.848ct loose stone Sale price¥9,800

Brazilian Rose Quartz 1.793ct Loose Stone Sale price¥9,800

Brazilian rose quartz 2.167ct loose stone Sale price¥9,800

Brazilian rose amethyst 0.793ct loose stone Sale price¥15,800

Madeira Citrine 7mm/0.938ct loose Sale price¥3,980

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¥12,800

Dendritic quartz 7.997ct loose Sale price¥6,980

Brazilian Paraiba Tourmaline in Quartz 0.780ct Loose Stone Sale price¥15,800

Brazilian citrine 5.4mm/0.769ct loose stone Sale price¥6,980

Brazilian citrine 1.125ct loose stone Sale price¥9,800

Brazilian citrine 1.962ct loose stone Sale price¥9,800

KARATZ Custom Made

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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

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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.