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 "

【5/22 22時販売】《限定9石》こだわりカットガチャ💎通常39,800円の甲州貴石切子 plusthree「昴：アメトリン」や山本武氏の作品など（おまけでサンジェ氏シトリン1石）《複数購入割引有》 Sale price¥4,980

coming soon

Brazilian dendritic quartz 4.587ct loose stone Sale price¥9,800

[On Sale June 6th]《Limited to 9 Stones》Brazilian Amethyst Single Stone Loose (Includes Elestial and Bi-Color Amethyst)《Bulk 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） 7.682ctルース

[On sale 10 PM, June 6] Brazil Tinkerbell Quartz (Pink Fire Quartz) 7.682ct Loose Stone Sale price¥15,800

Sold out

【12563308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） 6.142ctルース

[On sale June 7th, 10 PM JST] Brazilian Tinkerbell Quartz (Pink Fire Quartz) 6.142ct Loose Stone

[Sales start May 31, 10 PM JST] Brazilian Marcasite in Quartz Loose Stone 6.670ct Sale price¥25,800

Amethyst 4.249ct rough stone Sale price¥4,980

Brazilian Quartz in Quartz 15.373ct Loose Stone Sale price¥18,800

Romanesite in Quartz 4.825ct loose stone Sale price¥9,800

[Koshu Precious Stones plusthree] Citrine 5.121ct Loose Sale price¥35,800

Brazilian Flower Quartz 7.064ct Loose Stone Sale price¥14,800

Brazilian Romanesite in Amethyst 7.083ct Loose Stone Sale price¥15,800

Brazilian Flower Quartz 4.666ct Loose Stone Sale price¥9,800

【Calafuri】K18 Quartzite Pendant Top (Necklace Top) Sale price¥49,800

[On sale May 24th, 10 PM JST] Brazilian Color-Shift Amethyst 1.865ct Loose Gemstone Sale price¥9,800

[On sale May 21st at 10 PM] Brazilian Lavender Quartz (Scorolite) 2.211ct Loose Stone Sale price¥12,800

[On Sale May 21st, 10 PM] Brazilian Lavender Quartz (Scorolite) 0.952ct Loose Stone Sale price¥9,800

【Sold from 22:00 on May 21】Brazilian Color-Shift Amethyst 6.559ct Loose Stone Sale price¥15,800

[Sale starts May 21st, 10 PM JST] Brazilian Rose Amethyst 6.325ct Loose Gemstone Sale price¥12,800

[On sale May 10th, 10 PM JST] 6 Limited Pieces - Brazilian Mica in Rose Quartz (One stone), Multiple Purchase Discount Available Sale price¥3,980

[On sale May 10th at 10 PM] "Limited 11 Stones" Brazilian Mica in Rose Quartz (1 stone) "Multiple purchase discount available" Sale price¥3,980

[Jeweler's Tools] 3 black light loose pieces (ruby, red spinel rough, oil-in-quartz) with rechargeable battery Sale price¥6,980

[Jeweler's Tools] Digital Caliper Color Shift Amethyst 2 Piece Set Sale price¥2,980

"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

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

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

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

Amethyst/Citrine 4mm (Epicot cut) 2 stone set《Multiple purchase discount available》 Sale price¥1,980

1 stone loose quartz in oil from Pakistan《Discount available for multiple purchases》 Sale price¥1,500

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 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

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)

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

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 10 stones》Plumeria cut carving (Peridot, Blue Topaz, Citrine, Rose Quartz) 1 stone 《Bulk purchase discount available》 Sale price¥1,980

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

【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 9 stones! Includes Koshu Kiriko plus three citrine gacha, normally priced at 29,800 yen. 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

Limited to 8 stones: Colombian mango quartz (up to 60 carats, average 21.6 carats) [Multiple purchase discounts available] Sale price¥1,980

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

[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 6 stones: Brazilian dendritic quartz (new to Tucson, average 2.5 carats) [Multiple purchase discounts available] Sale price¥3,980

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.