A PAIR OF ART DECO EMERALD AND DIAMOND EAR PENDANTS, CIRCA 1928. Each designed as a circular-cut diamond tapered oval, set with a cabochon emerald, to the collet diamond and bezel-set emerald drops suspending a tapered diamond-set fringe with onyx and emerald geometric motif terminals. #ArtDeco #earrings
Diatoms have cell walls called frustules that contain opaline silica and fine pores. The tiny pores in the frustules make them a useful filtering material for a wide range of industrial products, including beer and jet fuel.