Glass Alchemy Color Change Statistics - Sundance Art Glass Center
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Glass Alchemy

Glass Alchemy glass is compatible with Pyrex, Kimble, Borosilicate, Sunsilica, Northstar and Duran (brands of glass). Rods are usually 5 to 9 mm in diameter and are 10 inches in length. These statistics were taken from the Manufacturers information.


Glass Alchemy Ltd. created a color numbering system based on chemical properties of the glass. Through the numbering system, an artist may gain insight into the composition of the glass and thereby acquire a greater understanding of the various colors and their characteristics. Therefore, the artist can ultimately use the numbering system to achieve more control over design decisions.

The First Number
The first identifying number of all GA colors is based on the ROY G BIV spectrum, providing the artist with an easy way to identify the color.

The Second Number
The second number indicates the primary colorant, so that the artist can anticipate what the final result will look like. Therefore, decisions on how to work the color, and whether or not certain colors should be used in combination, can be made easily and consistently.

The Third Number (In A Color With Four Numbers)
Due to the increasing complexity of some formulations developed by Glass Alchemy, some colors now have more than one primary ingredient. The third number indicates that there is a second colorant, providing further information and assistance to the glass artist. This system will be followed with all subsequent releases.

The Last Number (In All Colors)
The last number doesn't mean much. At one time, GA wanted it to reflect the chemical saturation level, but it was not possible to follow through with the scheme. If the color name itself has a number at the end of the name, as with colors in the Cobalt series, then this is a clear indication of the level of metal coloration and density of color. For an accurate saturation indicator, please see the properties chart on the website or in the catalog.


BL Responsive - Black light responsive. Colors are not "visible" until activated by an ultra violet light.

Carnival - used to indicate that the luster also includes red and orange (full spectrum) hues.

Luster - is used to indicate that a certain cane color takes on a multi colored sheen. On the ROY G BIV these colors are the yellow through violets.

Polychromatic -

WYSIWYG: (what you see is what you get) is used to indicate a color that is stable and not influenced by the flame adjustment (oxidizing or reducing).

Striking: indicates that a second "heat" brings out the color. Rubies should always be kiln struck for the best color.

Many colors "reduce". Some artists enjoy this effect, others don't. For example: Cobalt can go gray, while True Green can develop brick red streaks. To mitigate this, adjust the oxygen in your flame (increase it).

This Comparison Chart is currently Under Construction due to new Glass Alchemy colors being produced and Discontinued Colors being removed.

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