Vintage Turquoise & Silver Bracelet Help Please

I got this bracelet from my uncle. The bracelet had been in a drawer since 1964. He does not remember where he got it, and weather is was new or old when he got it. This piece is well made and heavy (around 3 oz) . Can anyone tell me anything about it? I believe it is a sand cast as the inside has sand casting bumps. Is this turquoise considered quality? If I can ask, what would the value be? (I am not selling it, but would need to insure it). Thank you all for the help.