Thanks for this information.
I can still value the chandelier for you. Sometimes a signature or manufacturer's identity will add to the value.
This is truly a wonderful fixture! They made good use of quartz - both the smokey and the amethyst.
The chandelier appears to be European, possibly French, and looks as if it was made at the turn of the 20th century.
It is difficult to identify the metal from your pictures, but it looks like bronze. If it is bronze, and if the chandelier is in excellent cosmetic and working condition, its current retail (replacement or insurance) value is approximately $25,000. If you were to sell it, you could expect to get the fair market (private sale or auction) value of approximately 40% of the retail amount, or $10,000, depending on location and actual condition.
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Thank you so much!