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rock crystal

Rock crystal refers to colorless quartz. It is said that the name comes from the Greek word ``krustallos'' (ice) because of the appearance of ice turned to stone. It is said that it was once produced in Japan, and is one of the gemstones that are familiar to Japanese people. Because they can be found in relatively large crystals, many have special cuts, making them fun to collect in different cuts.

Karatz GemMagazine
" Rock Crystal "

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Sold out 《再販売》ハイヒール（ロッククリスタル）1石《宝石ハイヒール1個 - カラッツSTORE

High heels (rock crystal) 1 stone (gem high heels)《Discount available for multiple purchases》
【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》

1 American Herkimer Diamond (rock crystal) 💎 (child-bearing type)《Multiple purchase discount available》 Sale price¥2,980
ロッククリスタル 43.123ctルース

[Mr. Takeshi Yamamoto] Rock crystal 43.123ct loose Sale price¥25,800
ブラジル産ロッククリスタル 12.725ctルース

[Takeshi Yamamoto] Brazilian Rock Crystal 12.725ct Loose Sale price¥39,800
【山本武氏】ブラジル産ロッククリスタル 22mm/48.216ctルース

[Takeshi Yamamoto] Brazilian Rock Crystal 22mm/48.216ct Loose Stone (Fire Flower) Sale price¥59,800
ブラジル産ロッククリスタル 0.936ctルース

Brazilian Rock Crystal 0.936ct Loose Stone Sale price¥6,980
【山本武氏】ロッククリスタル 78.580ctルース

[Takeshi Yamamoto] Rock crystal 78.580ct loose stone Sale price¥98,000
American Herkimer Diamond (Rock Crystal) 5.3mm/0.594ct Loose

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

American Herkimer Diamond (Rock Crystal) 5.5mm/0.534ct Loose Sale price¥8,800
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
【甲州貴石切子plusthree】ロッククリスタル 15mm/10.059ctルース《昴×灯》(ダブル切子タイプ) ワッペン

[Koshu Precious Stone Cut Plusthree] Rock Crystal 15mm/10.059ct Loose Stone "Subaru x Hikaru" (Double Cut Type) Patch Sale price¥45,800
【カラフリ】K18ロッククリスタルペンダントトップ（ネックレストップ） - カラッツSTORE

[Colorful] K18 rock crystal pendant top (necklace top) Sale price¥39,800
Sold out 【甲州貴石切子plusthree】ロッククリスタル 15.588ct《切子玉》ルース ワッペン付

[Koshu Precious Stone Kiriko PlusThree] Rock Crystal 15.588ct《Kirikodama》 Loose with Patch

Sold out 【山本武氏】ブラジル産ロッククリスタル 19.239ctルース

[Takeshi Yamamoto] Brazilian rock crystal 19.239ct loose stone
Sold out コロンビア産ノンオイルエメラルド 0.535ctルース

[Published on 12557152] [Takeshi Yamamoto] Rock Crystal 8.130ct Loose Stone (Fire Flower)

Sold out 【桔梗カット】ロッククリスタル 19.590ctルース《シミズ貴石代表・清水幸雄氏》 ワッペン付

[Kikyo Cut] Rock Crystal 19.590ct Loose (Mr. Yukio Shimizu, Representative of Shimizu Precious Stones) Patch Included

Sold out 【桔梗カット】ロッククリスタル 15.750ctルース《シミズ貴石代表・清水幸雄氏》 ワッペン付

[Kikyo Cut] Rock Crystal 15.750ct Loose《Mr. Yukio Shimizu, Representative of Shimizu Precious Stones》 Patch included

Sold out 【甲州貴石切子】ロッククリスタル 3.560ctルース ワッペン付

[Koshu Precious Stone Kiriko] Rock Crystal 3.560ct Loose with Patch

Sold out 【12531675掲載】ロッククリスタル 8.140ctルース

[Kikyo Cut] Rock Crystal 8.140ct Loose《Mr. Yukio Shimizu, Representative of Shimizu Precious Stones》 Patch included

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.