In the 1920s/1930s, British jewelry based on the delicate wings of the Morpho tropical butterfly (usually blue) was quite popular. Made of sterling silver, the special butterfly wings came from dead butterflies in South America. Ea piece of butterfly wing jewelry is unique. Its wings have shiny and dense scales. The structure of the scales will produce a charming azure color due to refraction & reflection depending on the angle of light exposure. Do not soak butterfly wing jewelry in water or rinse it Year: 1920-30s Dimensions: 3.4 x 1.8 cm, chain length including buckle is about 40 cm Material: sterling silver, Morpho butterfly wings, glass Condition: Good, slight signs of use, normal signs of oxidation on sterling silver *Necklace alloy is not sterling silver MADE IN ENGLAND & 7LM STERLING on the back of the pendant & MJA stamped on the part the chain goes through-frm the pendant. Please refer to all pictures for visual detail as they are considered part of the descriptio