














Black opal 2.031ct loose
Opal is a gemstone characterized by shimmering rainbow-colored light. There are several types of opal, but among them, the red flame that sways in the pitch black darkness of black opal is so beautiful that you cannot take your eyes off it. Ground colors include black, blue, and gray. Photographs are taken using a penlight.
・Type: Loose (natural stone)
・Stone name: Black Opal
・Weight: 2.031ct
・Scratches/chips: A+
・Inclusion: - ·remarks:---
・Accessories: Karatz quality guarantee card, case
▷For more information about black opal
Black opal! Three reasons why this enchanting gemstone is chosen
*We try to make sure that the colors in the photos are the same as the real thing, but the colors may look slightly different from the real thing depending on the lighting at the time of shooting and the monitor environment you are using. In addition, some photos may be taken using penlights.
*Click here for information on scratches, chips, treatments, and inclusions.
*For other frequently asked questions, please click here .
karatz_item_id: 12507989
・Type: Loose (natural stone)
・Stone name: Black Opal
・Weight: 2.031ct
・Scratches/chips: A+
・Inclusion: - ·remarks:---
・Accessories: Karatz quality guarantee card, case
▷For more information about black opal
Black opal! Three reasons why this enchanting gemstone is chosen
*We try to make sure that the colors in the photos are the same as the real thing, but the colors may look slightly different from the real thing depending on the lighting at the time of shooting and the monitor environment you are using. In addition, some photos may be taken using penlights.
*Click here for information on scratches, chips, treatments, and inclusions.
*For other frequently asked questions, please click here .
karatz_item_id: 12507989
Choose options



![[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)
![[Available 11/1 at 10 PM] <limited to stones> Indian Iolite Sunstone loose stone (avg. 0.32ct) <multi-buy discount available></multi-buy></limited>](http://store.karatz.jp/cdn/shop/files/collage_0b1503d0-c0a4-4c7d-8be7-a99800d445ec.png?v=1791683502&width=2000)
![[Available 11/1 at 10 PM] 《8 stones limited》 Indian Iolite Sunstone loose stone (avg. 0.4ct, oval cut) 《Multiple purchase discount available》](http://store.karatz.jp/cdn/shop/files/collage_0f297579-3922-4085-bec1-07cdc555493a.png?v=1791683111&width=2000)
![[Available 11/1 at 10 PM] 《Limited 9 pieces》 Indian Iolite Sunstone loose stone (avg. 0.70ct, pear-shaped cut) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/collage_f453805f-efe0-4cb6-9064-b8b6860ac31c.png?v=1791682551&width=2000)
![[Available 11/1 at 10 PM] 《7 stones limited》 Synthetic Cobalt Spinel (by Mr. Saint-Ger, 3mm hexagonal cut) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/2026-10-1111.00.09.png?v=1791684034&width=1246)
![[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_f4ce5d64-8804-46cd-8a67-6e5dfa2be8a9.png?v=1785924412&width=4000)



















![[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)