Ethiopian Opal

Ethiopian Opal, most famously the Welo Opal, is a precious opal variety mined in Ethiopia’s Welo Province. It is celebrated for its vibrant play-of-color, produced by the diffraction of light through microscopic silica spheres. Unlike many Australian opals, Welo Opals often contain a high water content, giving them a translucent to transparent appearance and an especially vivid display of rainbow-like colors.

These opals are hydrophane, meaning they can absorb water, which temporarily alters their transparency and brightness. This property also makes them more fragile and in need of careful handling compared to more stable opals. Despite this, their striking hues, affordability, and unique visual qualities have made Ethiopian Opals highly popular among collectors and jewelry makers. The name “opal” comes from the Greek word opállios, meaning “to see a change of color,” which perfectly describes the shifting brilliance of these gems.

Welo Opal specimens from Ethiopia.

Ethiopian opals are also known for their high water content, which gives them a translucent quality and a strong play of colors resembling a rainbow. Some Ethiopian opals, known as crystal opals, are highly transparent and allow for a clear view of the play of color within. These opals are often more valuable than opals with a milky or opaque appearance.

In summary, Ethiopian opals are a relatively new addition to the world of gemstones, but they have quickly gained popularity due to their unique play-of-color and vibrant colors.