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 Edition of 11: Two Koshu Kiriko plusthree stones (average 18 carats) with one Dendritic Quartz Gacha (with one Copper Rutile in Quartz) [Multiple purchase discounts available] Sale price¥3,980

[Available at 10 PM on August 2nd] [Limited to 5 stones] Brazilian Rhodonite in Quartz (Faceted Cut) - 1 stone [Multiple purchase discounts available] Sale price¥4,980

[8/8 22:00] Brazilian Dumortierite in Quartz 1.117ct Loose Stone Sale price¥8,800

[On Sale at 10 PM on August 10th] Brazilian Tinkerbell Quartz (Pink Fire Quartz) 4.156ct Loose Stone Sale price¥18,800

[8/10 22:00 Sale] Brazilian Lepidocrocite in Quartz 0.953ct Loose Stone Sale price¥7,980

【甲州貴石切子plusthree】トルマリンインクォーツ 2.484ct《コラボ》ルース《昴》ワッペン付

[Koshu precious stone Kiriko plusthree] Tourmaline in quartz 2.484ct《Collaboration》Ruth《Subaru》 Patch included Sale price¥29,800

【甲州貴石切子】レピドクロサイトインクォーツ 44.310ct《コラボ》ルースワッペン付

[Koshu Precious Stone Kiriko] Lepidocrocite in Quartz 44.310ct《Collaboration》Loose with emblem Sale price¥59,800

Fluorite in quartz 100.785ct loose Sale price¥19,800

Rutilated Quartz (Rutilated Quartz) 92.302ct Loose Sale price¥12,800

Rutilated Quartz (Rutilated Quartz) 110.150ct Loose Sale price¥18,800

【甲州貴石切子plusthree】ローズクォーツ 6.330ctルースワッペン付

[Koshu precious stone Kiriko plusthree] Rose quartz 6.330ct loose with patch Sale price¥25,800

[On Sale at 10 PM on August 2nd] Brazilian Lavender Quartz (Scorolite) 1.851ct Loose Stone Sale price¥12,800

[On Sale at 10 PM on August 2nd] Brazilian Lavender Quartz (Scorolite) 0.547ct Loose Stone Sale price¥8,800

[On Sale at 10 PM on August 2nd] Brazilian Lavender Quartz (Scorolite) 0.493ct Loose Stone Sale price¥6,980

【甲州貴石切子】ライモナイトインクォーツ（オーロラクォーツ） 8.229ct《コラボ》ルースワッペン付

[Koshu Precious Stone Kiriko] Limonite in Quartz (Aurora Quartz) 8.229ct《Collaboration》 Loose with emblem Sale price¥49,800

【甲州貴石切子】ライモナイトインクォーツ（オーロラクォーツ） 8.066ctルース

[Koshu Precious Stone Cutting] Brazilian Limonite in Quartz (Aurora Quartz) 8.066ct Loose Sale price¥49,800

【甲州貴石切子plusthree】グリーンクォーツ 6mm/0.731ct ルースワッペン付

[Koshu Precious Stone Kiriko PlusThree] Green Quartz 6mm/0.731ct Loose with Patch Sale price¥18,800

【甲州貴石切子plusthree】グリーンクォーツ 6mm/0.737ctルースワッペン付

[Koshu precious stone Kiriko plusthree] Green quartz 6mm/0.737ct loose with patch Sale price¥18,800

【甲州貴石切子plusthree】スモーキークォーツ 5.074ctルースワッペン付

[Koshu precious stone Kiriko plusthree] Smoky quartz 5.074ct loose with patch Sale price¥25,800

Brazilian dumortierite in quartz 5.154ct loose Sale price¥15,800

Brazilian dumortierite in quartz 6.727ct loose Sale price¥25,800

Brazilian dumortierite in quartz 4.230ct loose Sale price¥12,800

Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.708ct Loose Stone Sale price¥15,800

[Resale] [Jeweler's Tools] Black Light, 3 Loose Stones (Ruby, Red Spinel, Oil in Quartz) with Rechargeable Battery Sale price¥6,980

[Available at 10 PM on August 11th] Limited to 10 stones: Pakistani Oil-in-Quartz (Moving Bubbles) - Single Loose Stone (Multiple Purchase Discounts Available) Sale price¥2,980

Gem Gacha💎 Lepidolite in Quartz 1 stone《Multiple purchase discount available》 Sale price¥3,980

Brazilian rutilated quartz (rutilated quartz) 1 loose stone (6mm) {Multiple purchase discounts available} Sale price¥1,500

Brazilian rutilated quartz (rutile/rutile quartz (rutilated quartz)) 1 loose stone (6.0-6.5mm, for beginners) {Multiple purchase discounts available} Sale price¥2,580

Brazilian rutilated quartz (rutile/rutilated quartz (rutilated quartz)) 1 loose stone (3.0-3.5mm, for beginners) {Multiple purchase discounts available} Sale price¥1,580

Rose quartz 1 stone (heart, approx. 23ct)《Discount available for multiple purchases》 Sale price¥3,980

Limited Quantity: Colombian Mango Quartz (Small - Thick) Multiple Purchase Discounts Available Sale price¥1,280

Rutilated quartz 1 stone loose (12mm)《Multiple purchase discount available》 Sale price¥1,980

Limited to 12 stones, Pakistani oil in quartz, moving bubbles, 1 loose stone, multiple purchase discounts available Sale price¥4,980

Limited quantity: Colombian mango quartz (medium size) Multiple purchase discounts available Sale price¥1,680

Limited Quantity: Colombian Mango Quartz (Small Size - Slim Type) Multiple Purchase Discounts Available Sale price¥1,180

Limited to 11 stones: Brazilian rhodonite in quartz (cabochon, 7.5-8.5mm) 1 loose stone. Discounts available for multiple purchases. Sale price¥2,980

Limited to 9 stones [Mr. Sanjay] Oil in quartz, spinel, yellow opal 1 loose stone (damaged) [Multiple purchase discount available] Sale price¥2,980

【宝石商の道具】冷却ヒビ入れ染色クォーツ色違い2石セット - カラッツSTORE

[Jeweler's Tools] Cooling Cracked Dyed Quartz Set of 2 Stones in Different Colors (Discount available for multiple purchases) Sale price¥2,980

《Limited to 7 stones》1 stone tourmaline in quartz from Sri Lanka loose (8-9mm, octagonal cut)《Multiple purchase discount available》 Sale price¥3,980

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

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） 3.041ctルース

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 3.041ct loose Sale price¥18,800

【甲州貴石切子plusthree】トルマリンインクォーツ 2.652ct《コラボ》ルースワッペン付

[Koshu Precious Stones Plusthree] Brazilian Tourmaline in Quartz 2.652ct Loose Stone Sale price¥18,800

【甲州貴石切子plusthree】ラベンダークォーツ（スコロライト） 2.566ctルースワッペン付

[Koshu Precious Stones Plusthree] Brazilian Lavender Quartz (Scorolite) 2.566ct Loose Patch Sale price¥29,800

Brazilian dumortierite in quartz 3.077ct loose Sale price¥12,800

[Koshu Precious Stones Plusthree] Smoky Quartz 0.657ct Loose Patch Sale price¥19,800

Brazilian Tinkerbell Quartz (Pink Fire Quartz) 5.2mm/0.533ct Loose Stone Sale price¥12,800

Brazilian Paraiba Tourmaline in Quartz 6mm/0.684ct Loose Stone Sale price¥15,800

Brazilian chlorite in quartz 27.725ct loose stone Sale price¥19,800

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.