What kind of stone could this had been?

ok so Me and my family went on a Road trip and at one of the gas stations I saw a Girl with this REALLY nice Bracelet, It was a Thin Silver Bracelet With this tiny BBeautifulBlue Stone that was shaped like a ball That looked like it was glowing (but i know that it was just the sun hitting it) What kind of a... show more ok so Me and my family went on a Road trip and at one of the gas stations I saw a Girl with this REALLY nice Bracelet, It was a Thin Silver Bracelet With this tiny BBeautifulBlue Stone that was shaped like a ball That looked like it was glowing (but i know that it was just the sun hitting it)

What kind of a Stone could this have been?
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