Melt the chocolate and butter in small bowl in microwave on LOW power til melted; 1-2 minutes.
Dip the raspberries halfway in melted chocolate and put on skewers, two per cocktail.
Lay the skewers across the edges of a small bowl; keeping the chocolate raspberries from touching any surface and put in refrigerator to cool the chocolate.
Make the Cocktail
Fill a cocktail shaker with ice.
Add the vodka, chocolate and raspberries liqueurs and the half and half and shake well for 20 seconds.
Strain and pour into 2 martini glasses and garnish with the chocolate raspberries.