With their glittering designs and classic beauty, vintage cut glass candle holders are as captivating today as they were ...

Shine a flashlight through the glass or hold it up to a light source. Crystal will prism, forming a rainbow where the light shines. Glass will not. Use your fingernail to flick the edge of the glass.

rainbow prism effect when held up to the light, thinner than regular soda-lime glass and heavier than regular soda-lime glass. -Crystal with a lead content over 35 percent will actually sparkle.

My prism was inserted upside down into a hole on the main deck. The glass pyramid point hung down ... a friend gave us a Tiffany & Company crystal regulator mantel clock. It is solid brass and ...

We specialize in producing crystal optics mainly made of SAPPHIRE, Fused Silica, Glass, Silicon and coating. Products include windows, Plano-Convex/concave lenses, spherical lenses, prisms, rods & ...

glass technology has continued to advance from sheet glass to crystal glass, optical glass and prisms, to float glasses, chemical glassware, fibre optics and metal glasses.