1.5 Carat Square Cushion Lab Grown Diamonds
Lab-grown diamond
CUSHION 1.56 cts.
Sparkle Factor: 69 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9875900213
Lab-grown diamond
CUSHION 1.51 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9971208364
Lab-grown diamond
CUSHION 1.50 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9979857481
Lab-grown diamond
CUSHION 1.66 cts.
Sparkle Factor: 84 %
Color: I - Low White
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9975422370
Lab-grown diamond
CUSHION 1.55 cts.
Sparkle Factor: 71 %
Color: J - Slightly Tinted
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9875900227
Lab-grown diamond
CUSHION 1.57 cts.
Sparkle Factor: 88 %
Color: F - Colorless
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9970668019
Lab-grown diamond
CUSHION 1.50 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9970871973
Lab-grown diamond
CUSHION 1.50 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9973093131
Lab-grown diamond
CUSHION 1.50 cts.
Sparkle Factor: 86 %
Color: F - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9975763151
Lab-grown diamond
CUSHION 1.50 cts.
Sparkle Factor: 87 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9979406253
Lab-grown diamond
CUSHION 1.52 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9972537107
Lab-grown diamond
CUSHION 1.50 cts.
Sparkle Factor: 87 %
Color: H - White
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9973189702
Lab-grown diamond
CUSHION 1.51 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9974623347
Lab-grown diamond
CUSHION 1.51 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9974839206
Lab-grown diamond
CUSHION 1.51 cts.
Sparkle Factor: 82 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Good
Fluorescence: None
Diamond ID: 9975274345
Lab-grown diamond
CUSHION 1.52 cts.
Sparkle Factor: 80 %
Color: G - Very White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9876545047
Lab-grown diamond
CUSHION 1.56 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9973531752
Lab-grown diamond
CUSHION 1.52 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9974737675
Lab-grown diamond
CUSHION 1.57 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9974019400
Lab-grown diamond
CUSHION 1.59 cts.
Sparkle Factor: 87 %
Color: H - White
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9975625809
Lab-grown diamond
CUSHION 1.58 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9975747030
Lab-grown diamond
CUSHION 1.81 cts.
Sparkle Factor: 87 %
Color: D - Best a girl can get
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9976634125
Lab-grown diamond
CUSHION 1.56 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9978403799
Lab-grown diamond
CUSHION 1.61 cts.
Sparkle Factor: 87 %
Color: D - Best a girl can get
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9877687411
Lab-grown diamond
CUSHION 1.50 cts.
Sparkle Factor: 90 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9971211562
Lab-grown diamond
CUSHION 1.52 cts.
Sparkle Factor: 85 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9972626201
Lab-grown diamond
CUSHION 1.56 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9975179670
Lab-grown diamond
CUSHION 1.51 cts.
Sparkle Factor: 87 %
Color: G - Very White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9975248158
Lab-grown diamond
CUSHION 1.52 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9978566239
Lab-grown diamond
CUSHION 1.55 cts.
Sparkle Factor: 89 %
Color: G - Very White
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9970340573
Lab-grown diamond
CUSHION 1.59 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9971482045
Lab-grown diamond
CUSHION 1.59 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9974515960
Lab-grown diamond
CUSHION 1.51 cts.
Sparkle Factor: 89 %
Color: F - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9978450332
Lab-grown diamond
CUSHION 1.58 cts.
Sparkle Factor: 87 %
Color: G - Very White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9972290292
Lab-grown diamond
CUSHION 1.56 cts.
Sparkle Factor: 87 %
Color: G - Very White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9977582072
Lab-grown diamond
CUSHION 1.50 cts.
Sparkle Factor: 90 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9977674710
Lab-grown diamond
CUSHION 1.50 cts.
Sparkle Factor: 89 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9979499570
Lab-grown diamond
CUSHION 1.50 cts.
Sparkle Factor: 90 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9979769182
Lab-grown diamond
CUSHION 1.52 cts.
Sparkle Factor: 87 %
Color: D - Best a girl can get
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9873188325
Lab-grown diamond
CUSHION 1.51 cts.
Sparkle Factor: 84 %
Color: F - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9878598599
Lab-grown diamond
CUSHION 1.52 cts.
Sparkle Factor: 90 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9971306595
Lab-grown diamond
CUSHION 1.52 cts.
Sparkle Factor: 90 %
Color: F - Colorless
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9971844985
Lab-grown diamond
CUSHION 1.50 cts.
Sparkle Factor: 90 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9972249013
Lab-grown diamond
CUSHION 1.51 cts.
Sparkle Factor: 89 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9972313434
Lab-grown diamond
CUSHION 1.52 cts.
Sparkle Factor: 89 %
Color: G - Very White
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9973368845
Lab-grown diamond
CUSHION 1.53 cts.
Sparkle Factor: 90 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9976610737
Lab-grown diamond
CUSHION 1.56 cts.
Sparkle Factor: 85 %
Color: G - Very White
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9978229125
Lab-grown diamond
CUSHION 1.63 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9979287606
Lab-grown diamond
CUSHION 1.52 cts.
Sparkle Factor: 90 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9979414751
Lab-grown diamond
CUSHION 1.52 cts.
Sparkle Factor: 90 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9979418468
Lab-grown diamond
CUSHION 1.55 cts.
Sparkle Factor: 86 %
Color: F - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9871830090
Lab-grown diamond
CUSHION 1.52 cts.
Sparkle Factor: 84 %
Color: G - Very White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9875905083
Lab-grown diamond
CUSHION 1.59 cts.
Sparkle Factor: 87 %
Color: G - Very White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9970316079
Lab-grown diamond
CUSHION 1.56 cts.
Sparkle Factor: 91 %
Color: D - Best a girl can get
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9970793535
Lab-grown diamond
CUSHION 1.52 cts.
Sparkle Factor: 89 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9971322337
Lab-grown diamond
CUSHION 1.53 cts.
Sparkle Factor: 89 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9971645786
Lab-grown diamond
CUSHION 1.51 cts.
Sparkle Factor: 87 %
Color: G - Very White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9972566385
Lab-grown diamond
CUSHION 1.53 cts.
Sparkle Factor: 90 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9972745578
Lab-grown diamond
CUSHION 1.71 cts.
Sparkle Factor: 93 %
Color: D - Best a girl can get
Clarity: VVS1 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9973016948
Lab-grown diamond
CUSHION 1.67 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9975556497
1.5 carat square cushion diamonds: what to expect
A 1.5 carat diamond is a confident step up from one carat, large enough to read clearly as a statement stone. It looks about 14% wider than a 1 carat stone of the same shape and shows around 31% more surface from above, even though it weighs half as much again.
How big is a 1.5 carat square cushion diamond?
A 1.5 carat square cushion diamond typically measures about 6.7 x 6.5 mm, based on the stones in our stock today. A round diamond of the same weight measures about 7.4 mm across, so the square cushion looks a similar size on the hand. Carat measures weight, not size, so cut and proportions affect how big a stone looks.
Choosing a 1.5 carat square cushion diamond
Every stone here has a length-to-width ratio of 1.08 or under, so it faces up as a square; the photo shows whether it has classic broad facets or a busier crushed-ice sparkle, which the certificate does not grade. Color and inclusions start to show more at this size, so G or better and VS2 or better are worth considering, particularly in step cuts.
1.5 carat square cushion diamond prices
Prices step up again at 1.50 carats, so a stone between 1.50 and 1.60 gives the look of a "carat and a half" for the least premium.
Natural or lab grown?
A lab grown diamond has the same chemistry, hardness and sparkle as a natural diamond, at a fraction of the price, which is why it is a popular way to reach a larger size. Today the lowest priced 1.5 carat square cushion diamond in our stock is $418 lab grown, against $2,410 natural. Compare 1.5 carat square cushion natural diamonds.
Other sizes
Compare square cushion lab grown diamonds at 1 carat, 2 carat, 3 carat or 5 carat. Or browse every square cushion lab grown diamond, from under a carat upwards.
Setting your diamond
Every diamond here can be set in an engagement ring, pendant or earrings made to order in our Bourton-on-the-Water workshop, hallmarked in the UK. Browse engagement rings or design your own. If the stone you want is not listed, our team can source it for you.
Your questions answered
How big is a 1.5 carat square cushion diamond?
A 1.5 carat square cushion diamond typically measures about 6.7 x 6.5 mm, based on the stones in our stock today. Exact measurements are on each stone's certificate.
How much does a 1.5 carat square cushion lab grown diamond cost?
Today our 1.5 carat square cushion lab grown diamonds range from $418 to $9,752, across 4,296 stones. Color, clarity, cut and the exact carat weight make the difference.
Should I choose a natural or lab grown 1.5 carat square cushion diamond?
A lab grown diamond has the same chemistry, hardness and sparkle as a natural diamond, at a fraction of the price, which is why it is a popular way to reach a larger size. Today the lowest priced 1.5 carat square cushion diamond in our stock is $418 lab grown, against $2,410 natural. Both are graded on the same 4Cs and come with a certificate.
What color and clarity should a 1.5 carat square cushion diamond be?
Color and inclusions start to show more at this size, so G or better and VS2 or better are worth considering, particularly in step cuts.
