To explain edge color of a table top or counter it’s important remember that when looking through, for instance, a piece of  3/4” thick glass the “color” of the glass is the result of it’s thickness.

But when looking at the edge of a  40” long x 3/4” rectangular shaped piece the viewer is actually seeing a 40” thick piece of glass. Or to be more precise the available light is see a 40” thick piece

The reason for the color is that ambient light travels the full 40” length, from one edge to the other edge. So if the thickness is 3/4” and has a  green tint when looking through it at 3/4” thick, a 40” thick piece could be about 40 times darker, depending of course on the type, amount and direction the available light. Looking at the chart  you can see that the edge color of a 12” long piece whether  “clear” glass or starfire optically clear glass is about 3 times lighter than the edge color of a 40” long piece.

However, the combining of different types and intensities of light such as natural, incandescent and/or fluorescent or halogen will play a significant roll in the edge color of a table top or counter.

The reason normal clear glass has a green tint is that the silica sand, ( glass is about 70% silica sand ) as the majority component of glass, has a fairly high iron content, where as starfire is made from what’s considered to be a low iron silica. During the manufacturing process certain decolonizing techniques are also used to decrease the influence of the remaining iron. However there is only so far that de-colorizing can be accomplished.

That’s why the edge of starfire glass has “color”. The thicker or visually deeper the glass the greater concentration of iron consequently the deeper the edge color.


starfire-low-iron-glass-edge-color

 

starfire low iron glass

 

common clear glass

 

 

 

12”

 

12”

 

 

 

20”

 

20”

 

 

 

40”

 

40”

 

 

 

60”

 

60”

 

 

 

100”

 

 

 

 

 

130”

 

130”

 

note:
this chart is an approximation only. Types and the amount of available light will alter the edge color
.

 

How the Onami texture effects the edge and glass color of starfire optically clear low iron glass

There is a difference in edge color between smooth, un-textured starfire glass and Onami Crystal™ textured starfire glass. Again, with the smooth glass, light can travel unimpeded from one edge to another, but with Onami™ textured starfire glass, ambient light is refracted and bounced around by the faceted  Onami™ surface causing the light to travel a shorter distance. This reduces the length of the glass in relationship to the density of the remaining impurities after de-colorization and subsequently reduces the color amount of color at the edge.

starfire-low-iron-glass-edge-color

 

for product information and updates on Duncan Glass products join our email list
 

onami edge color 970 x 640 1a
Duncan-Glass-Logo-Type 6b2a 929fa0 36pt
crafted by hand 119-130-132 2a gray

hand crafted
textured glass

 

eco-friendly logo 2dthe eco-friendly texturing process

 

 

Home-Page-graphic-1b 929fa0 reversed

The brilliance of ice ....
with a surface like quarried stone

What causes the edge color of Onami Crystal
& optically clear low iron glass ?

art glass distributors

 

architectural glass dealers

 

THE GLASS PLACE

 

MICHAEL AUER DESIGN

 

MERRY GO ROUND - JAPAN

 

INNOVATIVE GLASS

 

DELPHI GLASS

 

ORNAMENTAL GLASS

 

D&L ART GLASS

 

SCHOENFELD INTERIORS

 

ARMSTRONG GLASS

 

HY-LITE GLASS & MIRROR

 

FRANKLIN ART GLASS

 

STAN PRICE DESIGN

 

NWAG

 

NISHIMURA LTD, HYOGO JAPAN

 

FAN OUT - TOKYO

 

TRADEWWINDS INTERIORS - HAWAII

 
surface sculpted glass picture 4e
US flag 30 x 43 white
Japanese-flag 1a  43 x 30
canadian-flag 43 x 30
facebook-logo2a 46 x 46
linkedin logo 778284 20 x 20

contact Duncan

Seafoam, Tsunami, Ocean, Onami and Mist are the trademarks of Duncan Glass. All rights reserved

© 2018 Jim Duncan - Duncan Glass all rights reserved

Duncan-Glass-Logo-Type-6b2a 778284 1d
crafted by hand 119-130-132 2a copy 2
BBB black - 1d 65 x 91 copy
eco-friendly logo 2c

carved in relief

 
Duncan logo 100 x 100 B-W
Duncan-Glass-Logo-Type 6b2a 929fa0 36pt
ito logo type 2a