Three-sided modified brilliant cut with curved sides, rounded corners, and (usually) 44 facets, including a faceted girdle. Popular in the 1970s.

$75.00 Trillion 4 mm (.18 carats)   $125.00 Trillion 5 mm (.36 carats)     $265.00 Trillion 6 mm (.61 carats)   $1062.00 Trillion 8 mm (1.44 carats)   $1764.00 Trillion 9 mm (2.16 carats)