Login

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 "

Sort by
カンテラオパール 5.204ctルース

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

Mexican Water Opal 3.161ct Loose Stone (Contraluz 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 Limited to 20 stones! Includes 2 Koshu Kiriko fire opals and 1 loose fire opal. Discounts available for multiple purchases.

Limited to 20 stones! Includes 2 Koshu Kiriko fire opals and 1 loose fire opal. Discounts 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 [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 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 《Limited to 9 Stones》Opal Gacha including Black Opal (plus one bonus Fire Opal) 《Bulk Purchase Discount Available》

《Limited to 9 Stones》Opal Gacha including Black Opal (plus one bonus Fire Opal) 《Bulk Purchase Discount Available》
Sold out Limited 10 Gemstones: Cat Cut Gacha 💎 Tourmaline, Opal, Chalcedony, etc. (Comes with a bonus mini cat cut) (Multiple purchase discount available)

Limited 10 Gemstones: Cat Cut Gacha 💎 Tourmaline, Opal, Chalcedony, etc. (Comes with a bonus mini cat cut) (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 《Limited to 10 Stones》Win a Koshu cut "Checker x Comet" Mexican fire opal, normally priced at 79,800 yen! 💎Fire Opal Gacha (Plus, get one extra "Contraluz" stone!) 《Bulk purchase discount available》

《Limited to 10 Stones》Win a Koshu cut "Checker x Comet" Mexican fire opal, normally priced at 79,800 yen! 💎Fire Opal Gacha (Plus, get one extra "Contraluz" stone!) 《Bulk purchase discount available》
Sold out Limited to 8 stones: Mexican Hyalite Opal Loose (Large 4ct, Fluorescent even in sunlight) Multiple purchase discounts available

Limited to 8 stones: Mexican Hyalite Opal Loose (Large 4ct, Fluorescent even in sunlight) Multiple purchase discounts 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 9 stones: 1 loose Australian opal (faceted cut) [Multiple purchase discounts available]

Limited to 9 stones: 1 loose Australian opal (faceted cut) [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 New Arrival from Tucson - Limited to 8 Stones: 1 Loose Australian Black Opal (Lightning Ridge Origin) - Multi-Purchase Discount Available

New Arrival from Tucson - Limited to 8 Stones: 1 Loose Australian Black Opal (Lightning Ridge Origin) - Multi-Purchase Discount Available
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]

Sold out Limited to 12 stones: Mexican opal (custom faceted cut) - 1 loose stone (multiple purchase discounts available)

Limited to 12 stones: Mexican opal (custom faceted cut) - 1 loose stone (multiple purchase discounts available)
Sold out メキシコ産カンテラオパール 6.112ctルース

Mexican Cantera Opal 6.112ct Loose
Sold out Limited to 2 stones: 1 Australian opal loose stone (pear cut) Multiple purchase discounts available

Limited to 2 stones: 1 Australian opal loose stone (pear cut) Multiple purchase discounts available
Sold out オーストラリア産ボルダーオパール 52.582ctルース

Australian boulder opal 52.582ct loose

Sold out 【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

Sold out 【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)

Sold out オーストラリア産ホワイトオパール 1.138ctルース

【9/4 22時販売】オーストラリア産ホワイトオパール 1.138ctルース
Sold out 【スターインカット】メキシコ産ファイアオパール 7mm/0.678ctルース ワッペン付

[Star in cut] Mexican fire opal 7mm/0.678ct loose patch
Sold out オーストラリア産ブラックオパール 0.702ctルース

[On sale August 1 at 10 PM] Australian black opal 0.702 ct loose stone with certificate
Sold out メキシコ産エッグインオパール 3.054ctルース

Mexican egg-in-opal, 3.054 ct, loose
Sold out オーストラリア産ブラックオパール 1.066ctルース

Australian Black Opal 1.066ct Loose
Sold out オーストラリア産ブラックオパール 0.894ctルース

Australian black opal, 0.894 ct loose
Sold out オーストラリア産ブラックオパール 0.766ctルース

Australian black opal 0.766ct loose stone
Sold out オーストラリア産ブラックオパール 0.877ctルース

Australian Black Opal 0.877ct Loose
Sold out Pt900ブラックオパール 3.17ct・ダイヤモンド0.105ctペンダントトップ（ネックレストップ） 鑑別書

[Listed in 22602653] [Colorflee] Black Opal 3.17ct Pendant Top (Necklace Top)
Sold out メキシコ産オパール 0.677ctルース

Mexican Opal 0.677ct 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.