GIA researchers theorize that the color in many pink diamonds is caused by color centers that can selectively absorb light in the visible region of the spectrum. Color centers are the result of ...

To understand where black falls on the color spectrum, first consider what light actually is. Light is radiation visible to the human eye Light is energy called electromagnetic radiation.

centers and color centers based on heavier impurities, such as nickel, chromium, and rare earth elements, have been under active research to exploit optical properties. Figure 2 illustrates the ...

Although both are "made, not mined," moissanite gemstones and lab-grown diamonds are NOT one in the same. Here are some of ...

Before starting the process of buying a diamond, it’s crucial to have a clear understanding of the 4Cs. Each of the 4Cs—cut, color, clarity, and carat—are characteristics that will help you ...

You perceive electromagnetic radiation in the form of light in all the colors of the rainbow. MirageC/Movement via Getty Images ...

USING the 2536.5 radiation of the mercury arc as the exciter and a Hilger Intermediate quartz spectrograph, the faint second-order Raman spectrum of diamond was first successfully recorded by me 1.

Modern gemologists and diamantaires are faced with a broad spectrum of color and clarity treatments ranging from the simple to the highly sophisticated, and from the easily detected to the highly ...

One could pattern the sequence after the ordering of visible light by wavelength (remembered by the mnemonic ROYGBIV), but use of this color spectrum is inherently problematic. The transitions ...

To understand where black falls on the color spectrum, first consider what light actually is. Light is energy called electromagnetic radiation. It's made up of a stream of energy particles called ...