There’s no denying that moissanites are durable. On the Mohs scale of hardness, moissanite stone is rated at 9.25, which is higher than any gemstone used in jewellery other than diamonds. Diamonds, which are the hardest known material, score a 10.
Both moissanite and diamond make superbly resilient stone choices, especially for a ring worn almost every day.
Diamonds are graded, with colourless diamonds being the most highly valued, whereas moissanite stones are not graded against this standard (although colourless moissanite is still the most desired).
A typical moissanite looks fairly ‘white’ or ‘clear’, but they are not colourless. In reality they bear a hue similar to a GIA-certified K-colour diamond. This places it in the faint colour scale, as opposed to colourless or near colourless.
As with diamonds , the smaller the moissanite, the more colourless it will appear. Advances in lab grown moissanite creation has resulted in colours comparable to a GIA-certified H-colour diamond and even more recently, an E-colour diamond. However, these are limited in supply. Under certain lights, moissanites may exhibit a yellow, green or grey tint, visible more so in larger stones and especially next to a diamond (as shown on the moissanite below on the right side of the image).
Brilliance refers to the ability to reflect white light and determines how much a diamond sparkles-a key quality of any gemstone used in an engagement ring. Moissanite disperses light very well and tends to be more brilliant than a diamond typically displayed in the dispersion of spectral colours from the moissanite. A diamond exhibits more ‘life’ in its light dispersion as you can see from the photo below.
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