18 Various Kinds of Opals
When most people think of an opal, they might think of a milky-colored stone containing a rainbow of stripes or flecks inside it. What many people don’t know is that they are incredibly diverse in appearance, and are not actually minerals. Opals are a solid, amorphous form of silica, and are classified as “mineraloids”. Like other mineraloids, such as amber, pearl, and obsidian, they lack structural order, or “crystallinity”.
From the top:
- Black Opals
- Cat’s Eye Opals
- Dendritic Opals
- Flamingo Opals
- Peruvian Pink Opals
- Zebra Opals
- Leopard Opals
- Yowah Nut and Koroit Opals (both have the same characteristics - they merely come from two different areas).
- Brown Opals
- Ethiopian Honeycomb Opals
- Green Opals (Serbian, Tanzanian, and Brazilian)
- Peruvian Blue Opals
- Matrix Opals
- Landscape Opals (Andean and Australian)
- Mexican Fire Opals
- Crystal Opals
- Australian Boulder Opals
- Ethiopian Ribbon Opals
(Side note - the image backgrounds are transparent, except for the matrix/landscape picture, which seems hellbent on being an asshat, no matter how many times I try to fix it)
Mrs. Clifford Richardson Reading (late 1880s). James Carroll Beckwith (American, 1852-1917). Oil on canvas. Smith College Museum of Art.
In 1893 Beckwith executed murals for the Liberal Arts Building at the World’s Columbian Exposition in Chicago. Refusing to follow artistic fashion, he remained faithful to his conviction that art should embody the technical refinement of form, color, and expression.
Visitor Pictures: Just one more jelly picture from a visitor. This is is a Japanese sea nettle.
Hope you enjoyed your visit with the jellies, petite-natu.