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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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【10/25 22時販売】《限定12石》メキシコ産オパール（カスタムファセットカット）1石ルース《複数購入割引有》

【10/25 22時販売】《限定12石》メキシコ産オパール（カスタムファセットカット）1石ルース《複数購入割引有》 Sale price¥3,980
[On sale from 10/5 at 10 PM] Limited to 9 stones: 1 loose Australian opal (faceted cut) [Multiple purchase discounts available]

[On sale from 10/5 at 10 PM] Limited to 9 stones: 1 loose Australian opal (faceted cut) [Multiple purchase discounts available] Sale price¥3,980
【10/25 22時販売】《限定11石》さくらシェイプ<コントラルスオパール>やこだわりカットのオパールガチャ1石ルース《複数購入割引有》

【10/25 22時販売】《限定11石》さくらシェイプ<コントラルスオパール>やこだわりカットのオパールガチャ1石ルース《複数購入割引有》 Sale price¥3,980
【10/29 22時販売】メキシコ産ファイアオパール 5.8mm/0.345ctルース

【10/29 22時販売】メキシコ産ファイアオパール 5.8mm/0.345ctルース Sale price¥12,800
メキシコ産ファイアオパール 0.199ctルース

【10/28 22時販売】メキシコ産ファイアオパール 4.8mm/0.199ctルース Sale price¥8,800
メキシコ産オパール（ファセットカット） 0.242ctルース

【10/25 22時販売】メキシコ産オパール（ファセットカット） 0.242ctルース Sale price¥8,800
【10/12 22時販売】オーストラリア産クリスタル＆ホワイトオパール１３石ハーフエタニティリングセット（2.0mm)

【10/12 22時販売】オーストラリア産クリスタル＆ホワイトオパール１３石ハーフエタニティリングセット（2.0mm) Sale price¥79,800
オーストラリア産ボルダーオパール 1.457ctルース

Australian boulder opal 1.457ct loose stone Sale price¥9,800
[On Sale 10/10 at 10 PM] [Limited to 8 stones] Mexican Hyalite Opal Loose Stone (Large 4ct, Fluorescent in sunlight) [Multiple purchase discounts available]

[On Sale 10/10 at 10 PM] [Limited to 8 stones] Mexican Hyalite Opal Loose Stone (Large 4ct, Fluorescent in sunlight) [Multiple purchase discounts available] Sale price¥4,980
オーストラリア産ボルダーオパール 0.874ctルース

Australian boulder opal 0.874ct loose Sale price¥3,980
オーストラリア産ボルダーオパール 1.156ctルース

Australian boulder opal 1.156ct loose Sale price¥3,980
オーストラリア産ボルダーオパール 1.173ctルース

Australian boulder opal 1.173ct loose Sale price¥5,980
オーストラリア産ボルダーオパール 0.982ctルース

Australian boulder opal 0.982ct loose Sale price¥6,980
ピンクオパール・ブルーオパール2石セット（小・大サイズ） - KARATZ STORE｜カラッツSTORE

[Use the #202509 Campaign] [Use the #202509 Campaign] Pink Opal and Blue Opal Set (Small and Large Sizes) [Multiple Purchase Discounts Available] Sale priceFrom ¥1,980
1 green opal from Amazon《Discount available for multiple purchases》

1 green opal from Amazon《Discount available for multiple purchases》 Sale price¥2,980
【5/21 22時販売】【KEN氏】 メキシコ産オパール1石（約3.5mm）《複数購入割引有》 - カラッツSTORE

1 Mexican opal (approx. 3.5mm) {Multiple purchase discounts available} Sale price¥3,980
[Available at 10 PM on September 21st] Limited to 20 stones. Includes 2 Koshu Kiriko Fire Opals. 1 loose fire opal gacha. Discounts available for multiple purchases.

[Available at 10 PM on September 21st] Limited to 20 stones. Includes 2 Koshu Kiriko Fire Opals. 1 loose fire opal gacha. Discounts available for multiple purchases. Sale price¥4,980
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 Sale price¥5,980
[Limited to 6 stones] [Mr. Sanjay] Mexican opal or Sri Lankan spinel 1 loose stone (with defects) [Multiple purchase discount available]

[Limited to 6 stones] [Mr. Sanjay] Mexican opal or Sri Lankan spinel 1 loose stone (with defects) [Multiple purchase discount available] Sale price¥3,980
1 loose Australian opal (heart shape, 4 x 4mm)《Discount available for multiple purchases》

1 loose Australian opal (heart shape, 4 x 4mm)《Discount available for multiple purchases》 Sale price¥3,980
[Available at 10 PM on August 11th] Limited to 9 stones: 1 loose Mexican opal stone [Multiple purchase discounts available]

[Available at 10 PM on August 11th] Limited to 9 stones: 1 loose Mexican opal stone [Multiple purchase discounts available] Sale price¥1,980
[Use the #202509 Campaign] Limited to 15 stones: One loose Australian iron opal stone [Multiple purchase discounts available]

[Use the #202509 Campaign] Limited to 15 stones: One loose Australian iron opal stone [Multiple purchase discounts available] Sale price¥3,980
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] Sale price¥2,980
Limited to 8 stones: 1 Mexican fire opal loose stone with unique color (up to 2.2ct) Multiple purchase discounts available

Limited to 8 stones: 1 Mexican fire opal loose stone with unique color (up to 2.2ct) Multiple purchase discounts available Sale price¥3,980
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) Sale price¥8,800
[Use the #202509 Campaign] [Limited to 23 stones] Ethiopian Opal Loose Stone (Sphere, 4.5-5.0mm) [Multiple purchase discounts available]

[Use the #202509 Campaign] [Limited to 23 stones] Ethiopian Opal Loose Stone (Sphere, 4.5-5.0mm) [Multiple purchase discounts available] Sale price¥5,980
オーストラリア産ホワイトオパール 2.092ctルース

Australian white opal 2.092ct loose stone Sale price¥9,800
Limited to 12 stones Tanzanian Milky Opal Cat's Eye (7.5 x 5.5 mm) Multiple purchase discounts available

Limited to 12 stones Tanzanian Milky Opal Cat's Eye (7.5 x 5.5 mm) Multiple purchase discounts available Sale price¥3,980
Mexican Hyalite Opal 2.592ct loose

Mexican Hyalite Opal 2.592ct loose Sale price¥9,800
メキシコ産カンテラオパール 14.690ctルース

[10/11 22:00 Sale] Mexican Cantera Opal 14.690ct Loose Sale price¥12,800
オーストラリア産オパール 0.374ctルース

[10/10 22:00 Sale] Australian Opal 0.374ct Loose Sale price¥6,980
メキシコ産カンテラオパール 1.120ctルース

[10/10 22:00 Sale] Mexican Cantera Opal 1.120ct Loose Sale price¥8,800
ボルダーオパール 1.868ctルース

Australian boulder opal 1.868ct loose Sale price¥18,800
オーストラリア産ボルダーオパール 1.675ctルース

Australian boulder opal 1.675ct loose Sale price¥14,800
オーストラリア産ボルダーオパール 28.880ctルース

Australian boulder opal 28.880ct loose Sale price¥59,800
メキシコ産ファイアオパール 1.270ctルース

[Camellia cut] Mexican fire opal 1.270ct loose with patch Sale price¥98,000
オパール 9.120ctルース

[On Sale at 10pm on October 1st] Australian Boulder Opal 9.120ct Loose Sale price¥98,000
北海道産UVオパール 12.259ctルース ワッペン付

UV opal from Hokkaido 12.259ct loose with patch Sale price¥6,980
【KEN氏】メキシコ産オパール 8mm/1.430ctルース - カラッツSTORE

Mexican Opal 8mm/1.430ct Loose Sale price¥25,800
オパール 14.837ctルース

Australian opal 14.837ct loose Sale price¥98,000
【KEN氏】メキシコ産ファイアオパール 1.580ctルース - カラッツSTORE

Mexican Fire Opal 1.580ct Loose Sale price¥25,800
【さくらインカット】メキシコ産オパール 9mm/1.532ctルース - カラッツSTORE

[Sale at 10 PM on September 15th] [Sakura In-Cut] Mexican Opal 9mm/1.532ct Loose Sale price¥45,800
カンテラオパール 17.284ctルース

Cantera opal 17.284ct loose Sale price¥29,800
【KEN氏】ファイアオパール 1.360ctルース - カラッツSTORE

Fire opal 1.360ct loose Sale price¥9,800
【NOBU氏】アマゾン産グリーンオパール 《コラボ》6.8mmルース - カラッツSTORE

[Mr. NOBU] Green Opal from Amazon [Collaboration] 6.8mm loose Sale price¥6,980
【猫カット】アマゾン産グリーンオパール 6.5mm/0.580ctルース

[Cat cut] Amazon green opal 6.5mm/0.580ct loose Sale price¥6,980
Fire Opal 2 Stone Pair 4mm/0.336ct Loose

Fire Opal 2 Stone Pair 4mm/0.336ct Loose Sale price¥3,980
オパール 6.560ctルース

Opal 6.560ct loose Sale price¥39,800

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.