This is a very nice N2 solid black opal cabochon, mined in Lightning Ridge, Australia. Gem has bright, nondirectional flagstone pattern green and blue fire. The pictures do NOT do it justice, far superior in real life. It measures 12.5x5.8x2 in a low dome oval, and weighs 0.97 carats. Brightness is 4/5 on a scale of 1-5, base color N2 opal base color is graded N1-N9, N1 (jet black) to N4 are classified as black opals; N5 & N6 are dark opal (formerly called "semi-black"); and N7-N9 are light base, with N9 = white.Lots more gem opals in my store! The item "CS046 N2 4/5 black opal solid Lightning Ridge 0.97ct" is in sale since Sunday, December 4, 2011. This item is in the category "Jewelry & Watches\Loose Diamonds & Gemstones\Loose Gemstones\Opal\Other Opals". The seller is "beau-wy" and is located in Wenatchee, Washington. This item can be shipped worldwide.