What causes color in glass?
This simply means particles of a substance that are suspended throughout the glass. These particles are often formed as the result of treatment with heat, forming what are known as ‘striking colours’. The colloidal particles scatter light of particular frequencies as it passes through the glass, causing colouration.
What chemicals are used to color glass?
Here are some common additives and the colors they produce:
- Cobalt Oxide: blue-violet.
- Cadmium Sulfide: yellow.
- Gold Chloride: red.
- Antimony Oxide: white.
- Sulfur: yellow-amber.
- Uranium Oxide: fluorescent yellow, green.
- Chromic Oxide: emerald green.
What is the rarest color of depression glass?
Pink glass is most valuable, followed by blue and green. Rare colors such as tangerine and lavender are also worth more than common colors like yellow and amber.
Is pink glass worth anything?
A glass or plate may sell for under $15 while sets and larger items may run upwards of $200. Pink glass is most valuable, followed by blue and green. Rare colors such as tangerine and lavender are also worth more than common colors like yellow and amber. Most pieces of old glass do not have any glass markings.
Is Heisey glass valuable?
From 1896 through 1957, exquisite glassware produced by A.H. Heisey & Co. When new, Heisey’s glass patterns were even sold in upscale department stores and served as a bridal registration alternative to fine china for many young couples. These immaculate glassware pieces endure as fine collectibles today.
How can I tell if I have real carnival glass?
The most common ways to identify the glass are:
- Look at the coloring and sheen for the iridescent rainbow effect.
- Check out the base of the glass, which should not be thick or weighty.
- Look for the manufacturer’s mark, although keep in mind many companies did not place a mark on their carnival glass.