In this portrait, Lady Arabella Stuart, a member of the Tudor royal court, is shown wearing a hexagram, presently known as the Star of David. It is unclear from the highest resolution photograph available, but it looks like the hexagram may contain a cross as well.
There are also references to her studying, among many other languages, Hebrew. Lastly, she is described as possessing a Hebrew bible, which she used in church. Does her necklace represent a connection to Judaism, the old testament, or does it have another significance altogether?
(PS: If you have seen or live near the original portrait, could you describe the necklace in more detail?)
Can anyone shed more light on this piece of jewelry? Are there any 16th-century English portraits or documents that refer to this symbol? Or any modern historical articles that explain its appearance here?