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 Opal 0.677ct Loose Sale price¥6,980

Mexican egg-in-opal 1.243ct loose stone Sale price¥14,800

Mexican egg-in-opal 0.627ct loose stone Sale price¥8,800

Ethiopian Opal 0.466ct Loose (Heart Shape, Faceted Cut) Sale price¥3,980

Ethiopian Opal 0.294ct Loose (Heart Shape, Faceted Cut) Sale price¥6,980

Australian black opal 0.310ct loose Sale price¥8,800

【サンジェ氏】メキシコ産ウォーターオパール 3.161ctルース（コントラルスオパール）

[Mr. Sanjay] Mexican water opal 3.161ct loose (Contrarus opal) Sale price¥69,800

[Camellia cut] Opal 14mm/5.283ct loose with patch Sale price¥98,000

Cantera opal 17.221ct loose Sale price¥25,800

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【大人用】宝石磨きに挑戦してみよう「自分で出来る原石磨きセット」（初心者向け：バイカラーフローライト）・ボルダーオパール付※原石磨きコンテスト対象 ※

[For adults] Let's try gemstone polishing "Do-it-yourself rough stone polishing set" (for beginners: bicolor fluorite) with boulder opal Subject to the rough stone polishing contest

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1 green opal from Amazon《Discount available for multiple purchases》

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1 Ethiopian Opal (Baroque)《Discount available for multiple purchases》

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Limited to 20 stones! Includes 2 Koshu Kiriko fire opals and 1 loose fire opal. Discounts available for multiple purchases.

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Limited to 9 stones: Australian black opal (including semi-black opal) loose stone (includes a bonus white opal) (Multiple purchase discounts available)

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Limited Quantity Gem Gacha! Win 1 or 2 gems, including pink diamonds and 46ct candela opals. Discounts available for multiple purchases.

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Limited to 10 stones Mexican Cantera Opal 1 loose stone (10 x 8 cm) Multiple purchase discounts available

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Limited to 9 stones: 1 loose Mexican opal stone (multiple purchase discounts available)

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Baroque Opal 2 stones《Discount available for multiple purchases》

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Limited to 15 stones, 1 loose Australian iron opal stone, multiple purchase discounts available

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Limited to 8 stones: Ethiopian black opal (heat-treated, identification instructions included, average 2ct, approx. 11x8mm) 1 loose stone (multiple purchase discounts available)

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[Limited to 6 stones] [Mr. Sanjay] Mexican opal or Sri Lankan spinel 1 loose stone (with defects) [Multiple purchase discount available]

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Limited to 9 stones: Carving Gacha (Opal, Tourmaline, Tsavorite Garnet) 1 loose stone (Multiple purchase discounts available)

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[Limited to 7 stones] Gem gacha💎 Australian opal or Mexican cantera opal 1 loose stone (with defects) [Multiple purchase discount available]

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Limited to 5 stones: 1 Mexican Hyalite Opal loose stone (average 0.5ct) Multiple purchase discounts available

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Fire Opal (Common Opal) 2 stone set《Discount available for multiple purchases》

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

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Limited to 2 stones: 1 Australian opal loose stone (pear cut) Multiple purchase discounts available

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Australian boulder opal 52.582ct loose

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【ダンデライオンカット】メキシコ産ファイアオパール 7mm《コラボ》ルースワッペン付

[Dandelion cut] Fire opal 7mm loose

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【宝石商の道具】加熱処理のエチオピア産オパール 1石（ブラックオパールとの見分けシート付） - カラッツSTORE

1 heat-treated Ethiopian opal (includes a sheet to distinguish it from black opal)

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Mexican Cantera Opal 8.097ct Loose

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[On sale May 6, 10 PM JST] Mexican Cantera Opal Loose Stone, 2.096 ct

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[Published 12562689] Mexican Water Opal 1.018ct Loose Stone

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[On sale May 3rd, 10 PM JST] Peruvian Bi-Color Blue Opal 4.067ct Loose Stone

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Peruvian Bicolor Blue Opal 3.757ct Loose Stone

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Peruvian Bi-Color Blue Opal 2.707ct Loose Stone

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Mexican Fire Opal 1.104ct Loose

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Australian black opal 0.232ct loose stone

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Australian Black Opal 0.248ct Loose Stone

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Australian Black Opal 0.427ct Loose Stone

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Australian Black Opal 0.784ct Loose

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Australian black opal, 3.871 ct, loose

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[Cat Cut] Mexican Opal 0.265ct Loose Stone

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【Cat Cut】Mexican Fire Opal Loose Stone 0.291ct

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Australian shell opal (shell opal) 96.177ct rough stone

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【12561176掲載】メキシコ産オパール（ファセットカット） 0.644ctルース

Mexican Opal (Faceted) 0.644ct Loose (Contrarus Opal)

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【12561168掲載】メキシコ産ウォーターオパール（ファセットカット） 0.349ctルース

Mexican Water Opal (Faceted, Contralus Opal) 0.349ct Loose

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Australian black opal 0.221ct loose

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.