opal

Opal is the birthstone for October. It is broadly divided into two types: "precious opal" which exhibits play-of-color effect, and "common opal" which does not. The impression changes greatly depending on whether there is a play-of-color effect or not, but the atmosphere also changes depending on the way the play-of-color appears and the pattern, and if you own one, you will want to collect many more, making it a collector's item.

Karatz GemMagazine
" opal "

Mexican Cantera Opal 4.973ct Loose Sale price¥15,800

Mexican Cantera Opal 7.460ct Loose Sale price¥29,800

Mexican Cantera Opal 1.794ct Loose Sale price¥8,800

Mexican Cantera Opal 2.982ct Loose Sale price¥14,800

Mexican Cantera Opal 1.534ct Loose Sale price¥8,800

Mexican Cantera Opal 4.542ct Loose Sale price¥12,800

Mexican Cantera Opal 11.105ct Loose Sale price¥12,800

Limited to 12 stones: 1 loose Australian iron opal (average 28ct, October birthstone opal) Multiple purchase discounts available Sale price¥7,980

Mexican Fire Opal 0.780ct Loose Sale price¥12,800

【クローバーインカット】メキシコ産オパール 7mmルースワッペン付 - カラッツSTORE

[Clover in cut] Mexican opal 7mm/0,648ct {Collaboration} Loose patch Sale price¥45,800

Limited to 7 stones: 1 loose Australian iron opal (average 7ct, October birthstone opal) Multiple purchase discounts available Sale price¥4,980

Australian Shell Opal (Shell Opal) 51.801ct Rough Stone Sale price¥25,800

Pt900/K18ブラックオパールキャッツアイ0.736 ペンダント（ネックレス）

Pt900/K18 Australian Black Opal Cat's Eye 0.736ct Diamond Pendant (Necklace) Chuho Sale price¥258,000

Ethiopian Opal 1.433ct Loose Sale price¥3,980

Limited to 7 stones: 1 loose Australian boulder opal (average 25 carats) Multiple purchase discounts available Sale price¥8,800

Mexican Fire Opal 6.7mm/0.953ct Loose Sale price¥25,800

Mexican Fire Opal 7.1mm/0.911ct Loose Sale price¥25,800

Mexican Fire Opal 4.9mm/0.333ct Loose Sale price¥8,800

Australian black opal 9.709ct loose stone Sale price¥158,000

Australian Boulder Opal 23.164ct Loose Sale price¥128,000

Mexican Fire Opal 0.576ct Loose (Faceted Cut) Sale price¥9,800

Mexican Fire Opal 0.212ct Loose (Faceted Cut) Sale price¥8,800

Mexican Fire Opal 1.222ct Loose (Faceted Cut) Sale price¥12,800

Mexican Fire Opal 0.213ct Loose (Faceted Cut) Sale price¥9,800

Mexican Fire Opal 0.356ct Loose (Faceted Cut) Sale price¥9,800

Ethiopian Opal 5.2mm/0.688ct Loose (Sphere) Sale price¥6,980

K18マダガスカル産スフェーン0.48ct・グリーンダイヤモンド・オパールペンダント（ネックレス）

K18 Madagascar sphene 0.48ct, green diamond, opal pendant (necklace) Sale price¥98,000

Mexican Cantera Opal 4.835ct Loose Sale price¥19,800

Australian Shell Opal (Shell Opal) 73.321ct Rough Stone Sale price¥49,800

Amazon Green Opal 0.814ct Loose (Faceted Cut) Sale price¥8,800

Amazonian green opal 0.517ct loose stone (faceted cut) Sale price¥8,800

Amazon Green Opal 0.285ct Loose (Faceted Cut) Sale price¥6,980

Mexican Cantera Opal 20.655ct Loose Sale price¥19,800

Synthetic Opal 1.914ct Loose Sale price¥15,800

Mexican Opal 1.199ct Loose (Contralus Opal) Sale price¥39,800

Mexican Cantera Opal 3.297ct Loose Sale price¥29,800

Ethiopian Opal 167.191ct Rough Stone Sale price¥39,800

メキシコ産ファイアオパール 6.117ctルース (バイカラーファイアオパール)

Mexican Fire Opal 6.117ct Loose (Bicolor Fire Opal) Sale price¥98,000

Mexican Cantera Opal 5.204ct Loose Sale price¥12,800

Paraiba tourmaline, pink sapphire, opal, pink spinel 13 stone half eternity ring set (2.0mm) Sale price¥98,000

Amazon Green Opal 1.372ct Loose (Faceted Cut) Sale price¥8,800

Amazonian green opal 1.814ct loose stone (faceted cut) Sale price¥9,800

Amazon Green Opal 0.781ct Loose (Faceted Cut) Sale price¥7,980

【甲州貴石切子plusthree】メキシコ産ファイアオパール 4.633ctルース《コラボ》ワッペン

[Koshu Precious Stones plusthree] Mexican Fire Opal 4.633ct Loose Stone [Collaboration] Patch Sale price¥59,800

Mexican Cantera Opal 7.720ct Loose Sale price¥22,800

Mexican Cantera Opal 4.158ct Loose Sale price¥15,800

Australian black opal 3.242ct loose stone Sale price¥69,800

Australian black opal 3.322ct loose stone Sale price¥98,000

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.