Sky blue mother of pearl satin glass rose bowl with an 8 crimped top and herringbone pattern. This piece of American Art Glass was made by Mt. Washington glass circa 1890.
Mother of pearl (MOP) glass is cased, or made in 2 layers. The outer layer has an infusion of tiny bubbles, which gives it the characteristic finish. There are no chips or cracks, but several tiny dark blue pigment speck in the glass, as shown in the photos.
The piece is 4 1/2" x 4 3/4". This piece comes from the the estate of a long time collector of American Art Glass, It was in his possession for over 50 years.