CHOOSING A DIAMOND - THE 4C's
The weight of gemstones and diamonds is measured in carats. (1 ct. = 0.2 grams)
The heavier a gemstone, the more value it generally holds.
The residual combination of wavelengths, determined by the chemistry of a gemstone,
create the colours we see.
Colour quality can vary due to hue, tone and concentration.
The translucence of a gem determines the quality level - the clearer the gemstone, the higher its value.
Cut is the shape of a gemstone. How well it is cut determines the brilliance of gemstones and diamonds.
- Leo Robin