Looks like glass glitter to me. Glass glitters are made up of crushed glass under a layer of plastic. They will be uneven and random.
Sparkles are made up of silver metallic flakes with an even consistent size and shape (usually a hex), and laminated under plastic layer. The plastic layer is then colored, or left clear for silver sparkle.
Champagne (Bermuda Sand) is made of ground silver and copper and has a sand-like texture.
The champagne sparkle that Jammin Sam sells is actually a sparkle wrap (large flakes), that uses silver and copper colored flakes under a clear laminate.
This top photo shows real champagne sparkle, and the bottom one shows the Jammin Sam champagne next to real champagne.
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