1 Carat Square Cushion Lab Grown Diamonds
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 85 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9875219382
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9872788377
Lab-grown diamond
CUSHION 1.00 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: 9875842332
Lab-grown diamond
CUSHION 1.01 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: 9875248137
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9878410964
Lab-grown diamond
CUSHION 1.02 cts.
Sparkle Factor: 80 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9870896170
Lab-grown diamond
CUSHION 1.04 cts.
Sparkle Factor: 83 %
Color: G - Very White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9877274814
Lab-grown diamond
CUSHION 1.00 cts.
Sparkle Factor: 85 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9876615938
Lab-grown diamond
CUSHION 1.00 cts.
Sparkle Factor: 88 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9872448694
Lab-grown diamond
CUSHION 1.00 cts.
Sparkle Factor: 85 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9877541634
Lab-grown diamond
CUSHION 1.02 cts.
Sparkle Factor: 89 %
Color: G - Very White
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9872690152
Lab-grown diamond
CUSHION 1.00 cts.
Sparkle Factor: 83 %
Color: F - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9875434085
Lab-grown diamond
CUSHION 1.03 cts.
Sparkle Factor: 88 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9870100486
Lab-grown diamond
CUSHION 1.00 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: 9870401234
Lab-grown diamond
CUSHION 1.11 cts.
Sparkle Factor: 86 %
Color: H - White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9870459132
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 86 %
Color: H - White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9870780578
Lab-grown diamond
CUSHION 1.03 cts.
Sparkle Factor: 83 %
Color: F - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9871259043
Lab-grown diamond
CUSHION 1.03 cts.
Sparkle Factor: 83 %
Color: G - Very White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9876385540
Lab-grown diamond
CUSHION 1.03 cts.
Sparkle Factor: 87 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9877541626
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 80 %
Color: I - Low White
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9775853553
Lab-grown diamond
CUSHION 1.02 cts.
Sparkle Factor: 80 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9872220914
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9877238939
Lab-grown diamond
CUSHION 1.02 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: 9879891031
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 87 %
Color: F - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9871571586
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 85 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9872235656
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 83 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9872663517
Lab-grown diamond
CUSHION 1.02 cts.
Sparkle Factor: 87 %
Color: G - Very White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9870780592
Lab-grown diamond
CUSHION 1.04 cts.
Sparkle Factor: 85 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9871599054
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 89 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9871877689
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 86 %
Color: D - Best a girl can get
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9874744598
Lab-grown diamond
CUSHION 1.00 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9875421478
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 89 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9876596695
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 86 %
Color: D - Best a girl can get
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9879365359
Lab-grown diamond
CUSHION 1.02 cts.
Sparkle Factor: 86 %
Color: G - Very White
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9871571230
Lab-grown diamond
CUSHION 1.00 cts.
Sparkle Factor: 85 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9872603261
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 89 %
Color: F - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9872898507
Lab-grown diamond
CUSHION 1.02 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9875421485
Lab-grown diamond
CUSHION 1.10 cts.
Sparkle Factor: 83 %
Color: H - White
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9876585355
Lab-grown diamond
CUSHION 1.02 cts.
Sparkle Factor: 87 %
Color: G - Very White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9877445551
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 86 %
Color: F - Colorless
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9879683642
Lab-grown diamond
CUSHION 1.06 cts.
Sparkle Factor: 82 %
Color: I - Low White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9777824946
Lab-grown diamond
CUSHION 1.00 cts.
Sparkle Factor: 88 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9870302873
Lab-grown diamond
CUSHION 1.06 cts.
Sparkle Factor: 86 %
Color: F - Colorless
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9871576101
Lab-grown diamond
CUSHION 1.05 cts.
Sparkle Factor: 85 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9871777072
Lab-grown diamond
CUSHION 1.02 cts.
Sparkle Factor: 87 %
Color: F - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9872494040
Lab-grown diamond
CUSHION 1.13 cts.
Sparkle Factor: 89 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9872601890
Lab-grown diamond
CUSHION 1.10 cts.
Sparkle Factor: 88 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9872893439
Lab-grown diamond
CUSHION 1.03 cts.
Sparkle Factor: 91 %
Color: D - Best a girl can get
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9873624677
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 89 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9873668886
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 87 %
Color: F - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9874409028
Lab-grown diamond
CUSHION 1.02 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9874452698
Lab-grown diamond
CUSHION 1.05 cts.
Sparkle Factor: 89 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9874508404
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 88 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9874598627
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 88 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9875345416
Lab-grown diamond
CUSHION 1.01 cts.
Sparkle Factor: 87 %
Color: F - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9875787446
Lab-grown diamond
CUSHION 1.02 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: 9876444438
Lab-grown diamond
CUSHION 1.07 cts.
Sparkle Factor: 87 %
Color: F - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9877376342
Lab-grown diamond
CUSHION 1.00 cts.
Sparkle Factor: 86 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9877461211
Lab-grown diamond
CUSHION 1.00 cts.
Sparkle Factor: 88 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9878357631
Lab-grown diamond
CUSHION 1.00 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: 9878541136
1 carat square cushion diamonds: what to expect
One carat is the most popular engagement ring size and the point where a diamond starts to look substantial on the hand.
How big is a 1 carat square cushion diamond?
A 1 carat square cushion diamond typically measures about 5.9 x 5.7 mm, based on the stones in our stock today. A round diamond of the same weight measures about 6.5 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 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. At this size G or H color and VS2 or SI1 clarity usually look white and clean to the eye, leaving more of your budget for cut and size.
1 carat square cushion diamond prices
Prices step up at the 1.00 carat mark, so a stone just over it carries the "one carat" name for the smallest premium; anything from about 1.20 carats adds visible size.
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 carat square cushion diamond in our stock is $307 lab grown, against $1,007 natural. Compare 1 carat square cushion natural diamonds.
Other sizes
Compare square cushion lab grown diamonds at 1.5 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 carat square cushion diamond?
A 1 carat square cushion diamond typically measures about 5.9 x 5.7 mm, based on the stones in our stock today. Exact measurements are on each stone's certificate.
How much does a 1 carat square cushion lab grown diamond cost?
Today our 1 carat square cushion lab grown diamonds range from $307 to $4,953, across 3,457 stones. Color, clarity, cut and the exact carat weight make the difference.
Should I choose a natural or lab grown 1 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 carat square cushion diamond in our stock is $307 lab grown, against $1,007 natural. Both are graded on the same 4Cs and come with a certificate.
What color and clarity should a 1 carat square cushion diamond be?
At this size G or H color and VS2 or SI1 clarity usually look white and clean to the eye, leaving more of your budget for cut and size.
