The Visual Difference Between Moissanite And Diamond

Moissanite (also known as moissanite) and diamonds are extremely similar in appearance, especially when moissanite is polished in the same way as diamonds, and its sparkle is almost identical to that of diamonds, making it difficult to distinguish. However, experienced appraisers can still distinguish moissanite from diamonds by the naked eye, and the following shares the visual difference between diamonds and moissanite.

  1. Observe facet information

Moissanite is a heterogeneous body of light, and when viewed with a tenfold magnifying glass, you can see posterior faceted angular ghosting, occasionally white parallel fine needle-like inclusions, and turn four times a week of light and four dark under orthogonal polarization.

Diamonds are photohomogeneous and ghosting after zooming in to the invisible, and most do not have white parallel fine needle-like inclusions.

  1. Laser pointer test

Moissanite has birefringence properties, and laser light projected on white paper by moissanite will be birefringent.

On the table of diamonds and moissanite with laser shots, observe the reflected and refracted light spots on white paper, the refractive light points of diamonds are bright and clear, the stars are few, are single, moissanite refracted light points are scattered, more stars, and the most important thing is that some light points will be double.

  1. Observe the fluorescence color

Moissanite is mass-produced, ultraviolet fluorescence characteristics are relatively uniform or even identical to each other, using ultraviolet lamps, this phenomenon can be found when examining moissanite.

The ultraviolet fluorescence of each diamond differs from one to another. Although most diamonds fluoresce blue, diamonds can fluoresce in many colors, such as orange-yellow, yellow, orange, red, white, and green. This phenomenon is mainly due to the different atomic structure of each diamond, such as the number of nitrogen atoms.

  1. Observe the fire under the sun

In the case of sufficient light, moissanite’s fire is more gorgeous.

Because moissanite is birefringent, the dispersion is 0.104 picoseconds/nanometer; Diamonds are monorefractive, dispersed 0.044 picoseconds/nanometers, and generally moissanite refracts twice as much brilliance as diamonds. And the fire color of diamonds generally has two kinds of blue and orange, and the fire color of moissanite is more, which looks dazzling.

  1. Observe the facet under a magnifying glass

Diamonds are highly hard, face is extremely smooth after grinding, and the ribbed junctions between facets are very sharp. Moissanite has faceted ridges that are not as sharp as diamonds and are more rounded.

  1. Test the hardness of gemstones

Moissanite hardness 9.25, diamond is 10, moissanite can not carve diamonds, diamonds can engrave moissanite.

Using moissanite and diamonds to mark each other, diamonds can leave scratches on moissanite surfaces, while moissanite is difficult to leave scratches on the surface of diamonds.

The above is an introduction to the difference between moissanite and diamonds to the naked eye.

In fact, distinguishing moissanite from diamonds does not have to be so troublesome, just look at the certificate.

Diamonds with more than 20 points sold in the market are accompanied by authoritative certificates, and whether it is a national inspection certificate or an international certificate, it will make a valid judgment on the authenticity of the diamond. For example, if the national inspection department identifies moissanite, it will be clearly marked as synthetic moissanite.


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