My fiance-to-be and I have pretty much settled on the setting and the shape, cushion, and are at the point where we are trying to determine our ideal length:width ratio. She currently prefers 1.15 - 1.20, however our jeweler has pointed out that we''ll have to make some concessions with diamond quality as we move away from a more square cut. Looking at bluenile, I beleive he is correct: the more rectangular you go, the more there seems to be some slippage with respect to clarity, color, girdle, etc. He also mentioned that an ideal depth for a cushion is 65% - thoughts on this? Rectangular is what she likes, and I''m inclined to get her what she wants, but I was wondering if there is a generally accepted L:W ratio for cushions. Looking online it would seem there is no rule of thumb:
"There are no established "ideal proportions" for a cushion cut diamond, however there are cushion cut diamonds which are clearly more beautiful than others as a result of the attention to detail during the cutting process."
http://www.niceice.com/cushion_cut_diamonds.htm
"Cushion cut diamonds can be cut to a square outline of 1.00 or an elongated outline with a 1.30 ratio as the ideal."
http://www.amazon.com/gp/help/jewelry/?ie=UTF8&popup=common%2Cstone_length_to_width_ratio
"Squarer-looking cushion cuts (Ratio of 1:1) tend to be prefered to more rectangular ones (Ratio of 1.2:1). Cushion cuts should not exceed a ratio of 1.2:1"
http://www.gemnation.com/base?processor=getPage&pageName=shape
"we suggest a classic pillow shape with the length-to-width ratio of 1.10 to 1.20."
http://www.diamondsourceva.com/Education/Shape/diamonds-shape-cushion-cut.asp
My current desired specs are:
Carat: 1.5 - 2.0
Clarity: VVS2 and above (would drop to Vs2 if needed)
Cut: Very Good (as defined by bluenile
Color: DEF
LW: 1.15 - 1.20
Am I kidding myself?
"There are no established "ideal proportions" for a cushion cut diamond, however there are cushion cut diamonds which are clearly more beautiful than others as a result of the attention to detail during the cutting process."
http://www.niceice.com/cushion_cut_diamonds.htm
"Cushion cut diamonds can be cut to a square outline of 1.00 or an elongated outline with a 1.30 ratio as the ideal."
http://www.amazon.com/gp/help/jewelry/?ie=UTF8&popup=common%2Cstone_length_to_width_ratio
"Squarer-looking cushion cuts (Ratio of 1:1) tend to be prefered to more rectangular ones (Ratio of 1.2:1). Cushion cuts should not exceed a ratio of 1.2:1"
http://www.gemnation.com/base?processor=getPage&pageName=shape
"we suggest a classic pillow shape with the length-to-width ratio of 1.10 to 1.20."
http://www.diamondsourceva.com/Education/Shape/diamonds-shape-cushion-cut.asp
My current desired specs are:
Carat: 1.5 - 2.0
Clarity: VVS2 and above (would drop to Vs2 if needed)
Cut: Very Good (as defined by bluenile
Color: DEF
LW: 1.15 - 1.20
Am I kidding myself?