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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
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ブラジル産ルチルレイテッドクォーツ 1.406ctルース

Brazilian rutilated quartz (rutilated quartz) 7.8mm/1.406ct loose stone Sale price¥9,800
ブラジル産ルチルレイテッドクォーツ 1.482ctルース

Brazilian rutilated quartz (rutilated quartz) 8.1mm/1.482ct loose stone Sale price¥9,800
ブラジル産ルチルレイテッドクォーツ 2.090ctルース

Brazilian rutilated quartz (rutilated quartz) 8.2mm/2.090ct loose stone Sale price¥9,800
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） 0.344ctルース

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 0.344ct Loose Stone Sale price¥12,800
アメリカ産ハーキマーダイヤモンド 0.528ctルース

American Herkimer Diamond (Rock Crystal) 5.5mm/0.528ct Loose Sale price¥8,800
Brazilian Amethyst 9.749ct Loose Stone

Brazilian Amethyst 9.749ct Loose Stone Sale price¥15,800
Amethyst 9.860ct loose stone

Amethyst 9.860ct loose stone Sale price¥18,800
オイルインクォーツ 0.438ctルース

Pakistani Oil in Quartz 0.438ct Loose Stone Sale price¥9,800
ブラジル産パライバトルマリンインクォーツ 0.871ctルース

Brazilian Paraiba tourmaline in quartz 0.871ct loose Sale price¥18,800
雲母インクォーツ 0.980ctルース

Mica in Quartz 0.980ct Loose Sale price¥6,980
雲母インクォーツ 0.834ctルース

Mica in Quartz 0.834ct Loose Stone Sale price¥6,980
雲母インクォーツ 0.544ctルース

Mica in Quartz 0.544ct Loose Stone Sale price¥6,980
グリーンクォーツ 0.743ctルース

[Koshu Precious Stones plusthree] Green Quartz 6mm/0.743ct Loose with Patch Sale price¥25,800
【ムーンシュタイナー】パイライトインクォーツ 18.288ctルース

[Moonsteiner] Pyrite in Quartz 18.288ct Loose Sale price¥59,800
American Herkimer Diamond (Rock Crystal) 5.5mm/0.534ct Loose

American Herkimer Diamond (Rock Crystal) 5.5mm/0.534ct Loose Sale price¥8,800
American Herkimer Diamond (Rock Crystal) 5.3mm/0.594ct Loose

American Herkimer Diamond (Rock Crystal) 5.3mm/0.594ct Loose Sale price¥8,800
【12548939掲載】マダガスカル産ラズライトインクォーツ 1.600ctルース

Lazurite in quartz from Madagascar 7.5mm/1.600ct loose Sale price¥18,800
【カメリアカット】カラーシフトアメジスト 20mm/26.815ct《コラボ》ルース ワッペン付

[Camellia cut] Color shift amethyst 20mm/26.815ct 《Collaboration》 Loose with emblem Sale price¥69,800
アメジスト 3.090ctルース

Amethyst 3.090ct loose Sale price¥6,980
ブラジル産デュモルチェライトインクォーツ 0.731ctルース

Brazilian dumortierite in quartz 0.731ct loose Sale price¥8,800
ブラジル産デュモルチェライトインクォーツ 0.496ctルース

Brazilian dumortierite in quartz 0.496ct loose Sale price¥6,580
ブラジル産デュモルチェライトインクォーツ 0.506ctルース

Brazilian dumortierite in quartz 0.506ct loose Sale price¥7,980
ブラジル産デュモルチェライトインクォーツ 0.309ctルース

Brazilian dumortierite in quartz 0.309ct loose Sale price¥4,980
ブラジル産デュモルチェライトインクォーツ 1.517ctルース

Brazilian dumortierite in quartz 1.517ct loose Sale price¥12,800
ブラジル産デュモルチェライトインクォーツ 3.247ctルース

Brazilian dumortierite in quartz 3.247ct loose Sale price¥25,800
ブラジル産デュモルチェライトインクォーツ 1.796ctルース

Brazilian dumortierite in quartz 1.796ct loose Sale price¥15,800
ブラジル産デュモルチェライトインクォーツ 2.932ctルース

Brazilian Dumortierite in Quartz 2.932ct loose Sale price¥25,800
ブラジル産デュモルチェライトインクォーツ 1.894ctルース

Brazilian dumortierite in quartz 1.894ct loose Sale price¥19,800
ブラジル産デュモルチェライトインクォーツ 1.186ctルース

Brazilian dumortierite in quartz 1.186ct loose (faceted cut) Sale price¥12,800
ブラジル産デュモルチェライトインクォーツ 2.625ctルース

Brazilian dumortierite in quartz 2.625ct loose (faceted cut) Sale price¥26,800
ブラジル産デュモルチェライトインクォーツ 1.971ctルース

Brazilian dumortierite in quartz 1.971ct loose (faceted cut) Sale price¥19,800
ブラジル産デュモルチェライトインクォーツ 1.390ctルース

Brazilian dumortierite in quartz 1.390ct loose (faceted cut) Sale price¥15,800
ブラジル産デュモルチェライトインクォーツ 1.573ctルース

Brazilian dumortierite in quartz 1.573ct loose (faceted cut) Sale price¥18,800
Sold out 【猫カット】アメジスト（8mm） - カラッツSTORE

[Cat cut] Amethyst (8mm)

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

1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》
Sold out Brazilian rutilated quartz (rutile/rutilated quartz (rutilated quartz)) 1 loose stone (3.0-3.5mm, for beginners) {Multiple purchase discounts available}

Brazilian rutilated quartz (rutile/rutilated quartz (rutilated quartz)) 1 loose stone (3.0-3.5mm, for beginners) {Multiple purchase discounts available}
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 ライモナイトインクォーツ（オーロラクォーツ） 1石 ルース

Lymonite in Quartz (Aurora Quartz) 1 stone loose

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

Limited to 20 stones, Brazilian dendritic quartz, 1 loose stone, multiple purchase discounts available
Sold out Madeira Citrine 1 stone 💎5mm-6mm (Madeira Citrine)《November birthstone》《Multiple purchase discount available》

Madeira Citrine 1 stone 💎5mm-6mm (Madeira Citrine)《November birthstone》《Multiple purchase discount available》

Sold out Rose quartz 1 stone (heart, approx. 23ct)《Discount available for multiple purchases》

Rose quartz 1 stone (heart, approx. 23ct)《Discount available for multiple purchases》

Sold out Limited to 10 stones: Koshu Precious Stone Kiriko "Broom" plusthree 45ct Dendritic Quartz Gacha (Includes 1 Copper Rutile in Quartz) (Multiple purchase discounts available)

Limited to 10 stones: Koshu Precious Stone Kiriko "Broom" plusthree 45ct Dendritic Quartz Gacha (Includes 1 Copper Rutile in Quartz) (Multiple purchase discounts available)
Sold out Limited to 10 stones: Paraiba Tourmaline Gacha 💎 Paraiba Tourmaline or Paraiba Tourmaline in Quartz (1 loose stone) [Multiple purchase discounts available]

Limited to 10 stones: Paraiba Tourmaline Gacha 💎 Paraiba Tourmaline or Paraiba Tourmaline in Quartz (1 loose stone) [Multiple purchase discounts available]
Sold out Limited to 15 stones: Blue Stone Gacha (Top-Color Benitoite 2.0mm, Paraiba Tourmaline in Quartz, Unheated Yogo Sapphire) (Multiple purchase discounts available)

Limited to 15 stones: Blue Stone Gacha (Top-Color Benitoite 2.0mm, Paraiba Tourmaline in Quartz, Unheated Yogo Sapphire) (Multiple purchase discounts available)
Sold out Two Koshu Kiriko plusthree stones (average 18 carats) with one Dendritic Quartz Gacha (with one Copper Rutile in Quartz) (Multiple purchase discounts available)

Two Koshu Kiriko plusthree stones (average 18 carats) with one Dendritic Quartz Gacha (with one Copper Rutile in Quartz) (Multiple purchase discounts available)

Sold out Limited to 12 stones, Pakistani oil in quartz, moving bubbles, 1 loose stone, multiple purchase discounts available

Limited to 12 stones, Pakistani oil in quartz, moving bubbles, 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 [On sale May 3rd at 10 PM] Limited to 9 stones! Color-shifting amethyst gacha, including a 3.49ct konpeito cut by Makoto Nakano (normally 22,800 yen) and a Sanje-cut stone. (Multiple purchase discount available)

[On sale May 3rd at 10 PM] Limited to 9 stones! Color-shifting amethyst gacha, including a 3.49ct konpeito cut by Makoto Nakano (normally 22,800 yen) and a Sanje-cut stone. (Multiple purchase discount available)

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.