These beautiful vintage Swarovski stones are unusual!  They are smooth on top and backed with a mirrored foil for an amazing flashing shine!  These have a similar look to Georgian Vauxhall glass stones. 

Bright, vivid Orange Topaz stones

Stone Size: 18x13mm / .70 inches / 1.8cm each
Stone Material: Vintage Swarovski Crystals - Orange Topaz
Settings: Heavy cast Brass with your choice of plating (Antique Gold plate is shown), offset loops to prevent the settings from flipping around and showing the back. 
Length: 16" (40.6cm) with a 2" extender chain for flexible sizing

Available with matching Leverback earrings (shown here: )

This necklace is shown in a youtube video here at the 7:59 mark if you'd like to see how it looks when it moves!