










Australian black opal, 0.666ct loose
Opals are gemstones characterized by their shimmering iridescence. There are several types of opals, but the red fire flickering within the pitch-black darkness of black opals is captivatingly beautiful. The body color can be black, blue, or gray. Photography is done using a penlight.
This is an Australian black opal that has just arrived from Tucson, USA. It is a Lightning Ridge black opal with green and blue play-of-color, purchased directly from an Australian miner.
・Type: Loose stone (natural stone)
・Stone name: Australian Black Opal
・Weight: 0.666ct
・Size: 8.3×4.2㎜
・Scratches/Chips: S
・Inclusions: -
・Remarks: ---
・Accessories: Karatz quality certificate, loose stone case (clear zip case if it doesn't fit)
▷Jewelry customization available
If you would like to customize your jewelry, please order your desired setting along with the stone from the link below.
・【Choose from stones】Simple Order
・【Choose from stones】Semi-Order
※If you would like an image of the stone on a setting, discuss a full custom order, or have any other questions, please feel free to contact us here.
※Rough stones are not eligible. Also, some stones may not be eligible.
※ We strive to make the photos the same color as the actual product, but due to lighting conditions during shooting and your monitor environment, the actual product may look slightly different. Also, some photos may be taken using a penlight.
※ For information on scratches, chips, treatments, and inclusions, please see here.
※ For other frequently asked questions, please see here.
karatz_item_id: 12562541
Choose options















![[On sale 10/30 at 22:00] 《Limited to 3 stones》 Oxblood red coral from Kochi Prefecture, half-drilled (8.7mm, top-color equivalent) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/PA061324_4217c560-3782-4f8c-9aa1-e3fa5a2264e0.jpg?v=1791680300&width=4000)
![[Available 10/30 at 10:00 PM] 《Limited to 8 stones》 Kochi Prefecture Red Coral Round Beads (8.5–9.0 mm) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/PA061362_522f9b23-dc30-4ff8-a6a7-2bd5dfde90de.jpg?v=1791679769&width=4000)
![[On sale 10/30 at 22:00] 《Limited to 9 stones》 1 Iolite Sunstone loose stone from India (average 0.70ct) 《Multiple purchase discount available》](http://store.karatz.jp/cdn/shop/files/collage_2b006162-3b5c-439b-b582-bdff30c42e76.png?v=1791682080&width=2000)
![[On sale 10/31 at 22:00] 《Limited to 15 stones》 Top-quality benitoite (2mm, round cut) loose stone 《Multiple purchase discount available》](http://store.karatz.jp/cdn/shop/files/PC080074_50a7da98-e5da-4a97-bdb2-a97224e584da.jpg?v=1715001409&width=3569)
![[Available 10/31 at 10 PM] 《Limited to 10 stones》 Zimbabwe Euclase rough (regular price ¥49,800), Brazilian Paraiba Tourmaline (CuO: 1.8%, MnO: 0.1%), or Triplite rough gacha (includes 1 Hackmanite rough) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/collage_a65569e2-bbd3-4500-aad7-326bfdef207e.png?v=1791680733&width=2000)
![[On sale 10/31 at 10 PM] 《Limited to 5 stones》 1 Sri Lankan Uva Moonstone Loose Stone (New Lumina Star Cut, by Mr. Sanje, avg. 0.5ct) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/collage_055269e3-e881-48d7-8e6b-be69a2c72be1.png?v=1791681460&width=2000)

![[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"](http://store.karatz.jp/cdn/shop/files/collage_ff6f1f8b-1da1-4ee4-a56f-084bc3e530f4.png?v=1792306445&width=2000)















![[Jeweler's tools] 4-piece set including loupe (10x magnification), tweezers, and 2 loose stones](http://store.karatz.jp/cdn/shop/files/P4130575.jpg?v=1776126091&width=4000)


![[Jeweler's Tools] Color change penlight loose set](http://store.karatz.jp/cdn/shop/files/P1010673_2976de1d-08ce-4d92-94af-524da4485c99.jpg?v=1725605083&width=4000)