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black opal

Black opal exhibits a play-of-color effect on ground colors such as black, deep blue, and gray. It is the most valuable type of opal. Each gemstone is unique because each piece has a different play of color and appearance. Opal is the birthstone for October.

Karatz GemMagazine
" Black Opal "

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オーストラリア産ブラックオパール 1.168ctルース

Australian black opal 1.168ct loose stone Sale price¥39,800
オーストラリア産ブラックオパール 0.805ctルース

Australian black opal 0.805ct loose stone Sale price¥39,800
Australian black opal 0.758ct loose stone

Australian black opal 0.758ct loose stone Sale price¥18,800
3.583ct Australian Black Opal Loose Stone (Double Sided)

3.583ct Australian Black Opal Loose Stone (Double Sided) Sale price¥29,800
オーストラリア産ブラックオパール 2.736ctルース

Australian black opal 2.736ct loose Sale price¥98,000
2.275ct Australian Black Opal Loose Stone (Double Sided)

2.275ct Australian Black Opal Loose Stone (Double Sided) Sale price¥59,800
ブラックオパール 2.293ctルース

Black opal 2.293ct loose Sale price¥98,000
オーストラリア産ブラックオパール 0.544ctルース

Australian black opal 0.544ct loose stone Sale price¥18,800
合成ブラックオパール 5.013ctルース

Synthetic Black Opal 5.013ct Loose Sale price¥59,800
合成ブラックオパール 2.996ctルース

Synthetic black opal 2.996ct loose stone Sale price¥29,800
合成ブラックオパール 1.209ctルース

Synthetic black opal 1.209ct loose stone Sale price¥18,800
ブラックオパール 4.528ctルース

Australian black opal 4.528ct loose Sale price¥39,800
合成ブラックオパール 1.467ctルース

Synthetic Opal (Synthetic Black Opal) 1.467ct Loose Sale price¥12,800
合成ブラックオパール 10.910ctルース

Synthetic Opal (Synthetic Black Opal) 10.910ct Loose Sale price¥69,800
合成ブラックオパール 1.532ctルース

Synthetic Opal (Synthetic Black Opal) 1.532ct Loose Sale price¥15,800
【12555989掲載】合成オパール 0.651ctルース

Synthetic Opal (Synthetic Black Opal) 0.651ct Loose Sale price¥15,800
Pt900/Pt850 ブラックオパール 0.37ct リング

Pt900/Pt850 Australian Black Opal 0.37ct Diamond 0.73ct Necklace Sale price¥198,000
オーストラリア産ブラックオパール 0.386ルース

Australian Black Opal 0.386ct Loose Stone Sale price¥39,800
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
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 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 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 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 【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 [On sale 9/23 at 10 PM] Australian Black Opal 0.256ct Loose Stone

[On sale 9/23 at 10 PM] Australian Black Opal 0.256ct Loose Stone
Sold out Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》

Pink Diamond Loot Box💎 Fancy Orange Pink 0.188ct and other Fancy-colored pink diamonds (all stones sorted or certified) 《Multiple purchase discounts available》
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 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 オーストラリア産ブラックオパール 0.424ctルース

Australian Black Opal 0.424ct Loose Stone

Sold out オーストラリア産ブラックオパール 3.890ctルース

[12551148] Australian black opal 3.890ct loose stone
Sold out オーストラリア産ブラックオパール 0.522ctルース

Australian black opal 0.522ct loose stone

Sold out Australian black opal 0.232ct loose stone

Australian black opal 0.232ct loose stone

Sold out 【12562558掲載】オーストラリア産ブラックオパール 0.251ctルース

Australian black opal 0.251ct loose stone

Sold out 【12562555掲載】オーストラリア産ブラックオパール 0.248ctルース

Australian Black Opal 0.248ct Loose Stone

Sold out オーストラリア産ブラックオパール 0.509ctルース

Australian Black Opal 0.509ct Loose Gemstone
Sold out オーストラリア産ブラックオパール 0.525ctルース

Australian Black Opal 0.525ct Loose
Sold out 【12562533掲載】オーストラリア産ブラックオパール 0.427ctルース

Australian Black Opal 0.427ct Loose Stone
Sold out 【12562530掲載】オーストラリア産ブラックオパール 0.784ctルース

Australian Black Opal 0.784ct Loose
Sold out 【12562525掲載】オーストラリア産ブラックオパール 0.956ctルース

Australian Black Opal 0.956ct Loose Stone
Sold out オーストラリア産ブラックオパール 3.871ctルース

Australian black opal, 3.871 ct, loose
Sold out 【12561913掲載】オーストラリア産ブラックオパール 0.221ctルース

Australian black opal 0.221ct loose
Sold out オーストラリア産ブラックオパール 0.565ctルース

Australian black opal 0.565ct loose stone
Sold out Australian black opal 3.148ct loose

Australian black opal 3.148ct loose
Sold out Australian black opal 0.435ct loose stone

Australian black opal 0.435ct loose stone

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.