Since Covid, many excavations in Honduras have been interrupted, this type of opal is becoming increasingly difficult to find, they are now rare. Moreover, black opal is the most expensive opal in the world! Today, I am offering up for auction, directly from my personal collection, a gigantic specimen of natural black opal from Honduras, among the largest I have ever seen. A gigantic museum-quality black opal, a piece full of color, encompassing a wide variety of colors, including green, red, blue, orange, purple, and yellow. It is so large that dozens of smaller jewelry-quality pieces can be obtained. A great opportunity to own a unique piece for your collection. Museum Piece Good quality Natural Opal Rough Beautiful Colors Honduras Erandique Gualguire mine Multicolor Black Matrix UNTREATED! Flash Fire (green, red, blue, orange, purple, yellow) 925 cts - 185 grams 1 Piece - 88 x 57 x 52 mm about The colors of the opal are only seen in wet piece ( because it's rough ) Photo wet pieces to highligh colors! Lamp light condition! please be careful with the description and measures COMBINED SHIPPING (if you buy more items in the same auction you only pay 1 shipment) Standard shipping ( 2-7 days for Italy ) ( 10-20 days for Europe ) ( 15-40 days for rest of the world )