Featured Metal inside hollow gold bangle

I posted this fully hallmarked 9ct bangle in the finds forum. It weighs 7grams.
The hook style catch doesn’t catch properly so it’s off to the jewellers to sell for scrap weight but these bangles have metal inside them for strength but I’ve never seen how it looks, ie is it a flat strip or metal wire/s? How heavy is the metal component likely to be? The only way to know for sure is to break it apart but I wondered if anyone has seen how it’s done and what it looks like inside. The front Celtic design is solid. I’m wondering how much he will take off the overall weight when I give it to him. I had one similar a couple of years ago but lighter than this one and I got £25 from him but gold was much lower in price then. I will let you know what happens. Thanks.

 

Hard to see in the photo,looks like sheet with the edges rolled over.

 

It does pick up with a magnet so definitely metal inside.
I wouldn’t know the best way to strip it, I’ve got a Dremel and a big angle grinder! Would you just cut off an end and the metal will pull out?

 

The chain on the right looks nice.

 

I’ve just remembered I’ve got bolt cutters. Thanks

 

thick one on th left too !!!!

 

Good call to strip it thanks Davey. I used tin snips as I thought the bolt cutters would crush it and make it harder to get the metal out.
It is folded sheet as @Hollyblue suggests. The piece of metal wire weighs just half a gram. I thought it would be heavier. Anyway here it is for future reference for joolies.

 

That’s a relief, re: .5g!