Excellent Symmetry Natural Diamonds

Diamond symmetry refers to the precision of facet alignment — how accurately each facet mirrors its counterpart on the opposite side. Excellent symmetry means every facet is precisely placed, creating a perfectly balanced pattern of light and dark that maximises brilliance and fire.

Symmetry is particularly important in round brilliant diamonds, where the 58 facets must be precisely aligned to produce the iconic "hearts and arrows" pattern visible under specialised viewers. Poor symmetry can cause light to leak from the diamond rather than returning to the viewer's eye.

At MOH London, we recommend Excellent symmetry as a minimum for engagement ring centre stones, especially round brilliants where symmetry has the most visible impact.

Frequently Asked Questions