The Trillion cut is a triangular shape comprised of three equal sides and 31 or
50 facets depending on whether the diamonds are used as solitaires or accent stones.
For solitaires, a curved or convex cut is employed, whereas accent stones are cut
uncurved or concave. Additional variations include round-cornered triangular, modified
shield cuts and triangular step cuts. The trillion’s unique style has great fire
and displays sharp brilliance if the stone is cut to the correct depth.
Trillion cut diamonds are most often used as side stones to compliment larger solitaire
stones in engagement rings, although they also make for a perfect solitaire stone
themselves considering their unparalleled brilliance and fire.
4. History & Background
The trillion cut was first developed in Amsterdam, although the design varied dramatically
depending on the rough form of the stone.
In 1962, the Henry Meyer Diamond Company of New York designed and trademarked the
modern Trillion cut and over time the trillion became the generic name for all triangular
brilliant cut diamonds.