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 "

【8/30 22時販売】《限定15石》甲州貴石切子plusthreeローズクォーツ2石・フローラドロップカットを必ず含むローズクォーツガチャ（おまけで山本氏ローズクォーツ）《複数購入割引有》 Sale price¥2,980

【9/18 22時販売】ブラジル産バイカラーシトリン 4.027ctルース Sale price¥3,980

Pakistani Oil in Quartz 0.283ct Loose Stone Sale price¥6,980

Pakistani Oil in Quartz 0.328ct Loose Stone Sale price¥7,980

【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¥55,800

【9/13 22時販売】ブラジル産ロードナイトインクォーツ 1.125ctルース Sale price¥9,800

Brazilian Lepidocrocite in Quartz 1.126ct Loose Stone Sale price¥9,800

【9/4 22時販売】ブラジル産カラーシフトアメジスト 2.649ctルース Sale price¥9,800

【9/4 22時販売】ブラジル産エレスチャルアメジスト 1.855ctルース Sale price¥8,800

【9/6 22時販売】パキスタン産オイルインクォーツ 0.281ctルース Sale price¥4,980

【9/7 22時販売】パキスタン産オイルインクォーツ 0.505ctルース Sale price¥4,980

Brazilian copper rutilated quartz 1.334ct loose stone Sale price¥8,800

【8/29 22時販売】ブラジル産ラベンダークォーツ（スコロライト） 0.475ctルース Sale price¥7,980

Brazilian copper rutilated quartz 1.262ct loose stone Sale price¥6,980

Brazilian copper rutilated quartz 1.647ct loose stone Sale price¥6,980

Brazilian copper rutilated quartz 1.352ct loose stone Sale price¥6,980

【9/1 22時販売】ブラジル産パライバトルマリンインクォーツ 4.3mm/0.327ctルース Sale price¥18,800

【9/1 22時販売】ブラジル産パライバトルマリンインクォーツ 2.737ctルース Sale price¥45,800

【9/3 22時販売】ブラジル産ロードナイトインクォーツ 0.438ctルース Sale price¥8,800

【9/3 22時販売】ブラジル産ロードナイトインクォーツ 5.5mm/0.562ctルース Sale price¥8,800

【9/3 22時販売】ブラジル産ロードナイトインクォーツ 6.2mm/0.600ctルース Sale price¥9,800

[Published 12562277] Brazilian Marcasite in Quartz Loose Stone 4.188ct Sale price¥12,800

"PSYCHO-PASS" x KARATZ collaboration jewelry: Shogo Makishima razor design ring (amethyst) Sale priceFrom ¥25,800

【一律1000円】アメリカ産・ハーキマーダイヤモンド（ロッククリスタル）1石原石

[Flat rate 1000 yen] 1 American Herkimer diamond (rock crystal) rough stone (discount available for multiple purchases) Sale price¥1,000

1 American Herkimer Diamond (rock crystal) 💎 (child-bearing type)《Multiple purchase discount 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

Limited Edition Tucson Lucky Dip Gems 💎 Guaranteed 1 stone from 8 types (Benitoite, Anthill Garnet, Dumortierite in Quartz, Eudialyte, etc.) 《Multi-purchase discount available》 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

《New from Tucson, Limited to 17 Stones》High-transparency, high-quality Dumortierite in Quartz from Brazil《Multiple purchase discount available》 Sale price¥3,980

[7/ 22:00 JST Release] Indian Green Phantom Quartz (Multiple Purchase Discount Available) Sale price¥1,980

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

【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 12 Stones》New Tucson Arrival: High-Quality Brazilian Dumortierite in Quartz (Faceted Cut)《Multiple Purchase Discount Available》 Sale price¥4,980

Limited to 14 stones: Brazilian dendritic quartz loose stone (average 7 carats) Multiple purchase discounts available Sale price¥2,980

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

《Tucson Arrivals - Limited to 6 Stones》Brazilian Black Garden Quartz, Average 3.6ct《Bulk Purchase Discount Available》 Sale price¥6,980

[Available at 10 PM on February 2nd] Limited to 10 stones! Takeshi Yamamoto Cut Gemstone Gacha! Fire Flower Cut Rock Crystal and More! Discounts Available for Multiple Purchases! Sale price¥7,980

Limited to 9 Stones: Brazilian Amethyst Loose Stones (Including Elestial and Bicolor Amethyst) - Multiple Purchase Discount Available Sale price¥3,980

[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

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

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 17 Stones》Brazilian Hematite in Quartz and Actinolite in Quartz (including those with a gemological report) - 1 Stone Loose - 《Multiple Purchase Discount Available》 Sale price¥3,980

[On sale May 10th, 10 PM JST] 6 Limited Pieces - Brazilian Mica in Rose Quartz (One stone), Multiple Purchase Discount Available Sale price¥2,980

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

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.