I purchased this from Akubix, an amber specialty store. It was quite expensive. The glitter sparkles, looking like gold leaf is inside. It's very light and cute, but I only tried it on and never wore it out. I'm in my 60s and feel a bit out of place wearing a sparkly heart, so I'm offering it for sale in the hopes that someone else will enjoy it. The clasp is 18k gold, but there is no marking. The diameter of the clasp is 5mm. Please refrain from price negotiations.