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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 "

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カンテラオパール 2.982ctルース

Mexican Cantera Opal 2.982ct Loose Sale price¥14,800
カンテラオパール 1.534ctルース

Mexican Cantera Opal 1.534ct ​​Loose Sale price¥8,800
メキシコ産カンテラオパール 11.105ctルース

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

Limited to 12 stones: 1 loose Australian iron opal (average 28ct, October birthstone opal) Multiple purchase discounts available Sale price¥7,980
オーストラリア産シェルオパール（貝オパール） 51.801ct原石

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
ファイアオパール 0.953ctルース

Mexican Fire Opal 6.7mm/0.953ct Loose Sale price¥25,800
ファイアオパール 0.333ctルース

Mexican Fire Opal 4.9mm/0.333ct Loose Sale price¥8,800
オーストラリア産ブラックオパール 9.709ctルース

Australian black opal 9.709ct loose stone Sale price¥158,000
メキシコ産ファイアオパール 0.576ctルース

Mexican Fire Opal 0.576ct Loose (Faceted Cut) Sale price¥9,800
メキシコ産ファイアオパール 0.212ctルース

Mexican Fire Opal 0.212ct Loose (Faceted Cut) Sale price¥8,800
メキシコ産ファイアオパール 1.222ctルース

Mexican Fire Opal 1.222ct Loose (Faceted Cut) Sale price¥12,800
【12552526掲載】エチオピア産オパール 0.688ctルース

Ethiopian Opal 5.2mm/0.688ct Loose (Sphere) Sale price¥6,980
メキシコ産カンテラオパール 4.835ctルース

Mexican Cantera Opal 4.835ct Loose Sale price¥19,800
オーストラリア産シェルオパール（貝オパール） 73.321ct原石

Australian Shell Opal (Shell Opal) 73.321ct Rough Stone Sale price¥49,800
アマゾン産グリーンオパール 0.814ctルース

Amazon Green Opal 0.814ct Loose (Faceted Cut) Sale price¥8,800
アマゾン産グリーンオパール 0.517ctルース

Amazonian green opal 0.517ct loose stone (faceted cut) Sale price¥8,800
アマゾン産グリーンオパール 0.285ctルース

Amazon Green Opal 0.285ct Loose (Faceted Cut) Sale price¥6,980
メキシコ産カンテラオパール 20.655ctルース

Mexican Cantera Opal 20.655ct Loose Sale price¥19,800
メキシコ産カンテラオパール 3.297ctルース

Mexican Cantera Opal 3.297ct Loose Sale price¥29,800
エチオピア産オパール 167.191ct原石

Ethiopian Opal 167.191ct Rough Stone Sale price¥39,800
カンテラオパール 5.204ctルース

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)

Paraiba tourmaline, pink sapphire, opal, pink spinel 13 stone half eternity ring set (2.0mm) Sale price¥118,000
メキシコ産エッグインオパール 1.243ctルース

Mexican egg-in-opal 1.243ct loose stone Sale price¥14,800
メキシコ産エッグインオパール 0.627ctルース

Mexican egg-in-opal 0.627ct loose stone Sale price¥8,800
エチオピア産オパール 0.466ctルース

Ethiopian Opal 0.466ct Loose (Heart Shape, Faceted Cut) Sale price¥3,980
エチオピア産オパール 0.294ctルース

Ethiopian Opal 0.294ct Loose (Heart Shape, Faceted Cut) Sale price¥6,980
オーストラリア産ブラックオパール 0.310ctルース

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
【カメリアカット】オパール 5.283ctルース

[Camellia cut] Opal 14mm/5.283ct loose with patch Sale price¥98,000
【12530283掲載】カンテラオパール 17.221ctルース

Cantera opal 17.221ct loose Sale price¥25,800
Sold out 【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*

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

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

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

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

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

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

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

Limited Quantity Gem Gacha! Win 1 or 2 gems, including pink diamonds and 46ct candela opals. Discounts available for multiple purchases.
Sold out [On sale May 16th at 10 PM JST] Limited to 10 stones! Cat Cut Gacha 💎 Tourmaline, Opal, Chalcedony, etc. (Includes a bonus mini-mini cat cut stone) (Multiple purchase discount available)

[On sale May 16th at 10 PM JST] Limited to 10 stones! Cat Cut Gacha 💎 Tourmaline, Opal, Chalcedony, etc. (Includes a bonus mini-mini cat cut stone) (Multiple purchase discount available)
Sold out Limited to 10 stones Mexican Cantera Opal 1 loose stone (10 x 8 cm) Multiple purchase discounts available

Limited to 10 stones Mexican Cantera Opal 1 loose stone (10 x 8 cm) Multiple purchase discounts available
Sold out Limited to 9 stones: 1 loose Mexican opal stone (multiple purchase discounts available)

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

Sold out バロックオパール 2石 - KARATZ STORE｜カラッツSTORE

Baroque Opal 2 stones《Discount available for multiple purchases》

Sold out [On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available]

[On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available]
Sold out Limited to 15 stones, 1 loose Australian iron opal stone, multiple purchase discounts available

Limited to 15 stones, 1 loose Australian iron opal stone, multiple purchase discounts available
Sold out Limited to 8 stones: Ethiopian black opal (heat-treated, identification instructions included, average 2ct, approx. 11x8mm) 1 loose stone (multiple purchase discounts available)

Limited to 8 stones: Ethiopian black opal (heat-treated, identification instructions included, average 2ct, approx. 11x8mm) 1 loose stone (multiple purchase discounts available)
Sold out Limited to 9 stones: Carving Gacha (Opal, Tourmaline, Tsavorite Garnet) 1 loose stone (Multiple purchase discounts available)

Limited to 9 stones: Carving Gacha (Opal, Tourmaline, Tsavorite Garnet) 1 loose stone (Multiple purchase discounts available)
Sold out [Limited to 7 stones] Gem gacha💎 Australian opal or Mexican cantera opal 1 loose stone (with defects) [Multiple purchase discount available]

[Limited to 7 stones] Gem gacha💎 Australian opal or Mexican cantera opal 1 loose stone (with defects) [Multiple purchase discount available]
Sold out Limited to 5 stones: 1 Mexican Hyalite Opal loose stone (average 0.5ct) Multiple purchase discounts available

Limited to 5 stones: 1 Mexican Hyalite Opal loose stone (average 0.5ct) Multiple purchase discounts available
Sold out Fire Opal (Common Opal) 2 stone set《Discount available for multiple purchases》

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

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

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

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.