NEED TO KNOW: DIAMOND COLOUR
A diamond’s colour refers to the natural presence, or lack thereof, of the subtle brown, yellow or grey hues appearing within the stone’s basic form. Relatively, a diamond’s colour neither pertains to the pink, blue or green nor the natural colour of diamonds.
Deep within the earth’s mantle, during the diamond’s formation, the colour appears. Elemental traces cause the varying tints found in every diamond, while the yellowish brown colours are created by nitrogen, greatly impacting white diamonds.
The rarest of all diamonds, and by far the most valuable, are those formed with little to no colour. These valuable natural stones are subject to intense temperatures and pressures and then are forced by volcanic eruptions toward ground level.
Similar to how a prism reflects light, a diamond captures natural light and then splits it into varying polarizations before reflecting back to the viewer’s eyes. If diamonds have much colouring or are murky, the prism-like effect is lessened. Meanwhile, diamonds void of colour expel more light, both coloured (fire and brilliance) and white light, appearing with more sparkle and more vibrancy.
INTERNATIONAL DIAMOND COLOUR SCALE
Letters are used in the diamond’s colour scale, ranging from D to Z. Diamonds with a “D” grade are completely colourless and clear, but these are the rarest kinds. More noticeable hues are given away by subtle colour traces, which are graded as the scale progresses.
Diamonds that fall under the “D–F” grades are judged as colourless, while those under “G–J” are nearly colourless. For the “K–Z” grade, these are the diamonds with noticeable colour attributes.
I pride myself on “D–H” grade diamonds. I assure my buyers that stones are shown under a neutral environment and a natural light setting since the surrounding and setting generally affects the diamond’s colour appearance.