1 Carat Square Radiant Natural Diamonds
Natural diamond
RADIANT 1.00 cts.
Sparkle Factor: 76 %
Color: J - Slightly Tinted
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 72469089
Natural diamond
RADIANT 1.00 cts.
Sparkle Factor: 71 %
Color: J - Slightly Tinted
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 77215128
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 75 %
Color: I - Low White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Faint Blue
Diamond ID: 72743065
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 79 %
Color: I - Low White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 74378940
Natural diamond
RADIANT 1.00 cts.
Sparkle Factor: 84 %
Color: F - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 72769004
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 76 %
Color: F - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 71519512
Natural diamond
RADIANT 1.00 cts.
Sparkle Factor: 84 %
Color: E - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 73658150
Natural diamond
RADIANT 1.00 cts.
Sparkle Factor: 81 %
Color: J - Slightly Tinted
Clarity: VVS1 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 73779192
Natural diamond
RADIANT 1.03 cts.
Sparkle Factor: 71 %
Color: I - Low White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 78223279
Natural diamond
RADIANT 1.06 cts.
Sparkle Factor: 79 %
Color: G - Very White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 76746026
Natural diamond
RADIANT 1.00 cts.
Sparkle Factor: 79 %
Color: H - White
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 77829354
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 73 %
Color: J - Slightly Tinted
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: Faint Blue
Diamond ID: 78536173
Natural diamond
RADIANT 1.02 cts.
Sparkle Factor: 81 %
Color: H - White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 78673894
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 79 %
Color: H - White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 71491353
Natural diamond
RADIANT 1.02 cts.
Sparkle Factor: 82 %
Color: J - Slightly Tinted
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 78189905
Natural diamond
RADIANT 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: 74459804
Natural diamond
RADIANT 1.02 cts.
Sparkle Factor: 82 %
Color: J - Slightly Tinted
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 75411845
Natural diamond
RADIANT 1.15 cts.
Sparkle Factor: 82 %
Color: I - Low White
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 79490786
Natural diamond
RADIANT 1.00 cts.
Sparkle Factor: 70 %
Color: F - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: Faint Blue
Diamond ID: 70411042
Natural diamond
RADIANT 1.02 cts.
Sparkle Factor: 80 %
Color: I - Low White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 79119016
Natural diamond
RADIANT 1.04 cts.
Sparkle Factor: 79 %
Color: I - Low White
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Medium Blue
Diamond ID: 70149351
Natural diamond
RADIANT 1.00 cts.
Sparkle Factor: 82 %
Color: J - Slightly Tinted
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 74667671
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 79 %
Color: J - Slightly Tinted
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 78459755
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 80 %
Color: J - Slightly Tinted
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Faint Blue
Diamond ID: 71862090
Natural diamond
RADIANT 1.02 cts.
Sparkle Factor: 82 %
Color: I - Low White
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Faint Blue
Diamond ID: 72829143
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 62 %
Color: I - Low White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: Medium Blue
Diamond ID: 79841518
Natural diamond
RADIANT 1.16 cts.
Sparkle Factor: 77 %
Color: H - White
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 77491276
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 62 %
Color: J - Slightly Tinted
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: Very Slight Blue
Diamond ID: 79440630
Natural diamond
RADIANT 1.21 cts.
Sparkle Factor: 75 %
Color: I - Low White
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 70573569
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 86 %
Color: H - White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 73533210
Natural diamond
RADIANT 1.15 cts.
Sparkle Factor: 68 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: Medium Blue
Diamond ID: 76649197
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 86 %
Color: I - Low White
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 78857879
Natural diamond
RADIANT 1.00 cts.
Sparkle Factor: 78 %
Color: I - Low White
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 70866766
Natural diamond
RADIANT 1.03 cts.
Sparkle Factor: 84 %
Color: I - Low White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 75645913
Natural diamond
RADIANT 1.11 cts.
Sparkle Factor: 87 %
Color: J - Slightly Tinted
Clarity: IF - Best a girl can get
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 77976023
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 85 %
Color: I - Low White
Clarity: VVS1 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 73269470
Natural diamond
RADIANT 1.03 cts.
Sparkle Factor: 87 %
Color: I - Low White
Clarity: VVS1 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 76169057
Natural diamond
RADIANT 1.09 cts.
Sparkle Factor: 71 %
Color: J - Slightly Tinted
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 73660019
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 82 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Medium Blue
Diamond ID: 75803887
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 85 %
Color: I - Low White
Clarity: VVS1 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 70162392
Natural diamond
RADIANT 1.04 cts.
Sparkle Factor: 75 %
Color: H - White
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Good
Fluorescence: Faint Blue
Diamond ID: 74652488
Natural diamond
RADIANT 1.08 cts.
Sparkle Factor: 77 %
Color: I - Low White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 79382480
Natural diamond
RADIANT 1.02 cts.
Sparkle Factor: 81 %
Color: H - White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 72914145
Natural diamond
RADIANT 1.04 cts.
Sparkle Factor: 87 %
Color: I - Low White
Clarity: VVS1 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 79143879
Natural diamond
RADIANT 1.10 cts.
Sparkle Factor: 80 %
Color: J - Slightly Tinted
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 70134869
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 79123251
Natural diamond
RADIANT 1.04 cts.
Sparkle Factor: 71 %
Color: H - White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 70205315
Natural diamond
RADIANT 1.00 cts.
Sparkle Factor: 76 %
Color: F - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 71377228
Natural diamond
RADIANT 1.03 cts.
Sparkle Factor: 79 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 73587438
Natural diamond
RADIANT 1.03 cts.
Sparkle Factor: 87 %
Color: I - Low White
Clarity: VVS1 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 74209012
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 75 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 79010605
Natural diamond
RADIANT 1.31 cts.
Sparkle Factor: 82 %
Color: F - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 73753945
Natural diamond
RADIANT 1.03 cts.
Sparkle Factor: 74 %
Color: J - Slightly Tinted
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: Faint Blue
Diamond ID: 72174164
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 71 %
Color: J - Slightly Tinted
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 77383142
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 70 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 70341429
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 84 %
Color: G - Very White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 76649225
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 63 %
Color: G - Very White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: Strong Blue
Diamond ID: 74173602
Natural diamond
RADIANT 1.18 cts.
Sparkle Factor: 69 %
Color: J - Slightly Tinted
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 70740856
Natural diamond
RADIANT 1.20 cts.
Sparkle Factor: 75 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 77204651
Natural diamond
RADIANT 1.01 cts.
Sparkle Factor: 89 %
Color: H - White
Clarity: VVS1 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 75389273
1 carat square radiant 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 radiant diamond?
A 1 carat square radiant diamond typically measures about 5.6 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 radiant 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 radiant diamond
Every stone here has a length-to-width ratio of 1.08 or under, so it faces up as a square with trimmed corners; the brilliant faceting hides small inclusions well, so VS2 or SI1 is often clean to the eye. 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 radiant 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 radiant diamond in our stock is $1,274 natural, against $303 lab grown. Compare 1 carat square radiant lab grown diamonds.
Other sizes
Compare square radiant natural diamonds at 1.5 carat, 2 carat, 3 carat or 5 carat. Or browse every square radiant 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 radiant diamond?
A 1 carat square radiant diamond typically measures about 5.6 mm, based on the stones in our stock today. Exact measurements are on each stone's certificate.
How much does a 1 carat square radiant natural diamond cost?
Today our 1 carat square radiant natural diamonds range from $1,274 to $15,136, across 289 stones. Color, clarity, cut and the exact carat weight make the difference.
Should I choose a natural or lab grown 1 carat square radiant 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 radiant diamond in our stock is $1,274 natural, against $303 lab grown. Both are graded on the same 4Cs and come with a certificate.
What color and clarity should a 1 carat square radiant 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.
