1 Carat Square Cushion Natural Diamonds
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 67 %
Color: I - Low White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 71004126
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 65 %
Color: J - Slightly Tinted
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: Faint Blue
Diamond ID: 74746684
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 73 %
Color: J - Slightly Tinted
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 70339360
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 74 %
Color: I - Low White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 74746621
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 71 %
Color: F - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: Faint Blue
Diamond ID: 71521908
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 74 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 70337981
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 75 %
Color: F - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 76577648
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 70 %
Color: H - White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: Faint Blue
Diamond ID: 70340389
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 74 %
Color: J - Slightly Tinted
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Faint Blue
Diamond ID: 75951241
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 79 %
Color: I - Low White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 72551380
Natural diamond
CUSHION 1.02 cts.
Sparkle Factor: 78 %
Color: J - Slightly Tinted
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 79021910
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 70 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Faint Blue
Diamond ID: 70339843
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 66 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: Faint Blue
Diamond ID: 74842922
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 77 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 79610364
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 77 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 78388973
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 81 %
Color: H - White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 76982850
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 77 %
Color: I - Low White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 71329438
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 76 %
Color: H - White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 76758178
Natural diamond
CUSHION 1.02 cts.
Sparkle Factor: 77 %
Color: I - Low White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Faint Blue
Diamond ID: 75329585
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 77 %
Color: I - Low White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 71365332
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 76 %
Color: I - Low White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 70339458
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 74 %
Color: I - Low White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 79397670
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 65 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: Strong Blue
Diamond ID: 74378316
Natural diamond
CUSHION 1.02 cts.
Sparkle Factor: 74 %
Color: I - Low White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 76507794
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 77 %
Color: I - Low White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 77472893
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 72 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Excellent
Fluorescence: None
Diamond ID: 79397740
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 79 %
Color: I - Low White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 79894261
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 79 %
Color: F - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 70339241
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 69 %
Color: J - Slightly Tinted
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Excellent
Fluorescence: Medium Blue
Diamond ID: 79112875
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 63 %
Color: F - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: Strong Blue
Diamond ID: 72025377
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 79 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 72373409
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 72 %
Color: I - Low White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 70339340
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 74 %
Color: H - White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 70340977
Natural diamond
CUSHION 1.02 cts.
Sparkle Factor: 77 %
Color: I - Low White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 71595906
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 84 %
Color: E - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 71814719
Natural diamond
CUSHION 1.03 cts.
Sparkle Factor: 74 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 79397831
Natural diamond
CUSHION 1.04 cts.
Sparkle Factor: 81 %
Color: I - Low White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 74492363
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 81 %
Color: H - White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 71820432
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 77 %
Color: I - Low White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Faint Blue
Diamond ID: 76402217
Natural diamond
CUSHION 1.02 cts.
Sparkle Factor: 72 %
Color: H - White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Faint Blue
Diamond ID: 73705216
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 75 %
Color: G - Very White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 70340053
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 69 %
Color: G - Very White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: Faint Blue
Diamond ID: 76756456
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 79 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 79864430
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 78 %
Color: G - Very White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Faint Blue
Diamond ID: 78548209
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 74 %
Color: J - Slightly Tinted
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 78641684
Natural diamond
CUSHION 1.02 cts.
Sparkle Factor: 75 %
Color: G - Very White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 70339234
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 81 %
Color: J - Slightly Tinted
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 73562670
Natural diamond
CUSHION 1.03 cts.
Sparkle Factor: 80 %
Color: H - White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 71780440
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 76 %
Color: J - Slightly Tinted
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 78641677
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 77 %
Color: I - Low White
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 70337904
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 68 %
Color: H - White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Excellent
Fluorescence: Strong Blue
Diamond ID: 72357764
Natural diamond
CUSHION 1.20 cts.
Sparkle Factor: 69 %
Color: J - Slightly Tinted
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 73407011
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 79 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 75864864
Natural diamond
CUSHION 1.04 cts.
Sparkle Factor: 65 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: Strong Blue
Diamond ID: 75682504
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 62 %
Color: I - Low White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Strong Blue
Diamond ID: 72361487
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 73 %
Color: J - Slightly Tinted
Clarity: VVS1 - V.V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: Faint Blue
Diamond ID: 70340410
Natural diamond
CUSHION 1.00 cts.
Sparkle Factor: 77 %
Color: I - Low White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Faint Blue
Diamond ID: 71205665
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 73 %
Color: H - White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Faint Blue
Diamond ID: 70340200
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 82 %
Color: H - White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 70794690
Natural diamond
CUSHION 1.01 cts.
Sparkle Factor: 79 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 71170188
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 5.7 mm, based on the stones in our stock today. A round diamond of the same weight measures about 6.4 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 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 natural diamond is formed over billions of years and each one is rare; many buyers value that origin. A lab grown diamond of the same grades costs far less. Today the lowest priced 1 carat square cushion diamond in our stock is $1,007 natural, against $307 lab grown. Compare 1 carat square cushion lab grown diamonds.
Other sizes
Compare square cushion natural diamonds at 1.5 carat, 2 carat, 3 carat or 5 carat. Or browse every square cushion natural 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 5.7 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 natural diamond cost?
Today our 1 carat square cushion natural diamonds range from $1,007 to $20,165, across 3,264 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 natural diamond is formed over billions of years and each one is rare; many buyers value that origin. A lab grown diamond of the same grades costs far less. Today the lowest priced 1 carat square cushion diamond in our stock is $1,007 natural, against $307 lab grown. 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.
