Help on a cosplay?

So, I am doing a cosplay. I usually want to look real accurate and so far I’ve looked best in the Elena Street Fighter Cosplay.. or so i’m told. But! The only problem I have is that Elena’s necklace.. I don’t know where to go with it.. I looked up rubber necklaces but they’re far to thin.. also she has 4 different colors for necklace and bracelets.. I’ve tried air clay.. it can work for the bracelets but not the necklace, the necklace is like a neck brace.. it’s odd. I really need help so if anyone can look up this character and help me it’d be really appreciated.. thankyou!