Blanc, Charles, 1813-1882 · London : Chapman and Hall · leaf 248
ART IN ORNAMENT AND DRESS. 234 cracks on the surface of the gem, which, sometimes, nearly extinguish its charming rainbow tints. The pearl, slowly secreted by shellfish with nacreous valves at the bottom of the sea, deteriorates when brought into contact with acids. It can be dissolved in vinegar,… … PORTUGUESE CUTTING. air tarnishes them — 'ages them, is the expression used by jewellers — and it even robs them of the soft changing silvery brilliancy, known as their water, and which once lost is never regained; they then become like the pearls found on the coast of Scotland, which are called…
Clothing and dress · Decoration and ornament · Fashion and art
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
