Marquise cut diamonds are boat-shaped, and are a very popular choice for an engagement ring. A marquise cut diamond undergoes a similar cutting process to that of a round diamond, but the carat weight of the marquise diamond is maximized by elongating it into its easily recognizable shape.
Fancy blue diamonds are among some of the rarest and most valuable colored diamonds. Natural Blue diamonds range in color light blue to dark blue and some exhibit traces of green or grey. The color classification for blue diamonds is as follows: faint blue, very light blue, light blue, fancy light blue, fancy blue, fancy intense blue, fancy dark blue, fancy deep blue and fancy vivid blue.
James Allen offers a variety of natural fancy blue diamonds, in all shapes and carat sizes. Recently, blue diamond engagement rings have become increasingly popular. Many women prefer blue color diamonds as opposed to the traditional colorless diamonds engagement ring. Natural blue color diamonds look stunning when paired with all types of settings from solitaire to pave to channel settings. Blue diamond rings are sold in platinum, white and yellow gold settings.