Milk glass is identifiable by its milky white color and its patterns and shapes. Collectible milk glass became popular in America in the mid-1800s, and it reached its highest popularity at the turn of the century.
Popular shapes of milk glass included dolphins and later, birds. Common patterns included "block and fan" and "buttons and arches," as well as ribbed grapes and drapery patterns reflecting major events of the day. Glass from the 1800s is a duller, more opaque white than later examples, although some pieces may be translucent at the edges.
Newer pieces have a rich, milky white color. Common patterns include hobnail and paneled and beaded grapes. The most commonly collected milk glass originated in mid-20th century, and the pieces often have the manufacturers' stamps on the bottoms. Major manufacturers include Fenton and Westmoreland.Learn More
The sex of a black moor goldfish is not identifiable until after it is one year old. During the breeding months from April to August, a male goldfish will sport white bumps, called breeding tubercles, on its gill coverings and pectoral fins. Additionally, females will appear to be much larger and fatter than males during these months.Full Answer >
A glass or antiques expert can verify the age of the glass. Valuable antique glass is characterized by signs of wear, defects and rough mold edges.Full Answer >
Depression glass is mass-molded, low-quality glassware that was manufactured between the late 1920s and early 1940s. According to About.com, identifying features of depression glass include heavy mold marks and presence of air bubbles in the glass. Depression glass was made in many colors, but the most popular colors among collectors are pink, cobalt blue and green.Full Answer >
A Fenton glass vase is identified by a manufacturer's mark or label found on the bottom of the piece. Once located, it's a matter of matching the symbols using reference books or online sources. The Fenton Art Glass website lists the logos and labels used between 1921 and 2005.Full Answer >