Vintage Murano Hand-Blown Cased Multicolor Teardrop Glass Sculpture

Vintage Murano Hand-Blown Cased Multicolor Teardrop Glass Sculpture.  The clear glass form encasing a black drop surrounded by fields of yellow, pink, blue and purple; signed indistinctly to the lower edge 18-1/2 inches tall; 8 inches wide; 3 inches deep and 11lbs in weight.  The sculpture is signed but not readable to us.  Online appraisal value at $1,500 for insurance.  Appraisal included w/purchase.