Hello Maria, I’m very glad that you chose Mearto for your online appraisal, Considering the photographs, overall pattern, glass quality and the colours, I concluded that this is an Entirely Hand Blown Seaform Glass Decorative Piece by the Well Known Glass Master Dale Chihuly. The piece is from his Seaform series which stretches from early 1980's to early 2000's. Although there are also studio editions from more recent years, this is a early 2000's Seaform from Chihuly likely made between 2000-2005. The piece is clearly inspired from the amorphic shapes of the oysters. As usual to this series the piece has a "double skin" which is a merged glass body composed of two relatively seperate pieces. In this piece, the larger pieces is very similar to smaller one in terms of design. The piece is dominantly Turquoise with black dots on the amorph pattern, the rim of the piece is yellow. The piece is very collectable and impressive. Very harmonious in design. The piece is in good condition without any visible problems. Entirely hand blown glass. Dimensions: Outer Skin: 10 Inches Wide by 8 Inches High by 7 1/2 Inches Deep, Inner piece: 6.5 Inches Wide by 4.5 Inches High by 5 Inches Deep Condition: The piece is in good condition without any visible problems. Provenance: Bought from a 2005 exhibition of the artist in Fine Art Center in Colorado Springs. 4500-7000$. Please don’t hesitate to reach us again for more online appraisals on your precious items, thank you for choosing Mearto.