WOW!  Magenta and Royal Blue through to Aqua and
Teal then back to Turquoise with flashes of Pink
again!  And that's just the top piece of glass!

About Dichroic Glass
When you hold your first piece of dichroic glass in your
hand, you will be delighted and amazed.  The glass shines
and sparkles reflecting and transmitting light and different
colours with every movement and angle.

The jewellery pieces are so  beautifully eye-catching you
will receive "ooh's and ahh's" whenever you wear them!

It is so hard to capture the beauty of this exquisite glass in
a photograph (especially with my photography skills), but I
have made an attempt to demonstrate the colour changes on
the piece below.  I have chosen a matt finish textured piece
with various pieces of glass to show the remarkable effects.

Lets get Technical
The brilliant dichroic optical properties of dichroic glass are
the result of multiple micro-layers of metal oxides.  These
thin layers of oxides have a total thickness of three to five
millionths of an inch.

NASA developed dichroic glass for use in face shields in space
suits.  Multiple ultra-thin layers of different metals (gold,
silver, titanium, chromium, aluminium, zirconium, magnesium,
silicon) are applied to the surface of the glass.  The glass is
then kiln fired at extreme temperatures in a vacuum.

The resulting plate of dichroic glass can then be fused with
other glass in multiple firings.  Certain wavelengths of light
will either pass through or be reflected, causing an array of
colour to be visible.  Due to variations in the firing process,
individual results can never be exactly reproduced;  each piece
of fused dichroic glass is unique and no two pieces are ever
the same.

From Wikipedia, the free encyclopedia