A good practice when you are buying an original Murano Glass is asking the seller to ask information about the specific realization technique used. Beware of the glass color, many low-cost supplier sell products with glass color painted on surface with spray varnish, used often to sell low-budget chandeliers and vases. The clear and matt glass must be colored during the furnace's process in the oven like Murano's tradition wants. You can make a test with a common lighter passing on surface the fire to see the varnish burn out. A good seller should know every details about the Murano glass art making, and she/he can describe the ways the artist used to create them. Some of the most used technique are Millefiori, Avventurina, Balotton, Bullicante, Cased Glass, cold glass cut, Fenicio, Filigrana, Half filigree, Reticello, Glass tesserae, Gold/Silver Leaf, Iceglass, Incalmo, Iridescence, Macette – Spots, Pulegoso, Rigadin, Sommerso. More info about Murano Glass techniques.