1.5 Carat Square Radiant Natural Diamonds
Natural diamond
RADIANT 1.51 cts.
Sparkle Factor: 78 %
Color: J - Slightly Tinted
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 76381684
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 70 %
Color: J - Slightly Tinted
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: Faint Blue
Diamond ID: 77395896
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 80 %
Color: F - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Faint Blue
Diamond ID: 77615027
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 81 %
Color: I - Low White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 73156432
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 72 %
Color: I - Low White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 79493033
Natural diamond
RADIANT 1.70 cts.
Sparkle Factor: 73 %
Color: I - Low White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: Faint Blue
Diamond ID: 72224522
Natural diamond
RADIANT 1.51 cts.
Sparkle Factor: 60 %
Color: I - Low White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: Medium Blue
Diamond ID: 77604256
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 78 %
Color: I - Low White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Excellent
Fluorescence: Faint Blue
Diamond ID: 75272137
Natural diamond
RADIANT 1.52 cts.
Sparkle Factor: 82 %
Color: I - Low White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 77586883
Natural diamond
RADIANT 1.51 cts.
Sparkle Factor: 86 %
Color: I - Low White
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 72451954
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 87 %
Color: I - Low White
Clarity: VVS1 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 78282707
Natural diamond
RADIANT 1.51 cts.
Sparkle Factor: 87 %
Color: I - Low White
Clarity: VVS1 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 75216634
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 75 %
Color: G - Very White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 74543169
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 72 %
Color: G - Very White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 74263208
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 73 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: Medium Blue
Diamond ID: 75039988
Natural diamond
RADIANT 1.51 cts.
Sparkle Factor: 77 %
Color: H - White
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 74210215
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 79 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 74551329
Natural diamond
RADIANT 1.51 cts.
Sparkle Factor: 79 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 77998313
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 82 %
Color: F - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 72452658
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 87 %
Color: G - Very White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 78799153
Natural diamond
RADIANT 1.53 cts.
Sparkle Factor: 84 %
Color: H - White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 72550206
Natural diamond
RADIANT 1.51 cts.
Sparkle Factor: 85 %
Color: F - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 78650478
Natural diamond
RADIANT 1.70 cts.
Sparkle Factor: 84 %
Color: I - Low White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 79822597
Natural diamond
RADIANT 1.51 cts.
Sparkle Factor: 79 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 79779150
Natural diamond
RADIANT 1.61 cts.
Sparkle Factor: 82 %
Color: G - Very White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 70930396
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 74 %
Color: G - Very White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: Faint Blue
Diamond ID: 75360595
Natural diamond
RADIANT 1.60 cts.
Sparkle Factor: 74 %
Color: F - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 72458597
Natural diamond
RADIANT 1.53 cts.
Sparkle Factor: 73 %
Color: G - Very White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: Strong Blue
Diamond ID: 78268935
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 90 %
Color: F - Colorless
Clarity: VVS2 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 79033646
Natural diamond
RADIANT 1.53 cts.
Sparkle Factor: 84 %
Color: H - White
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 77431783
Natural diamond
RADIANT 1.52 cts.
Sparkle Factor: 72 %
Color: G - Very White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 73931863
Natural diamond
RADIANT 1.65 cts.
Sparkle Factor: 80 %
Color: G - Very White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 70371470
Natural diamond
RADIANT 1.81 cts.
Sparkle Factor: 69 %
Color: J - Slightly Tinted
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 77710477
Natural diamond
RADIANT 1.70 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: 79268406
Natural diamond
RADIANT 1.90 cts.
Sparkle Factor: 79 %
Color: J - Slightly Tinted
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 72730017
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 86 %
Color: F - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 78998250
Natural diamond
RADIANT 1.69 cts.
Sparkle Factor: 77 %
Color: F - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 70852767
Natural diamond
RADIANT 1.54 cts.
Sparkle Factor: 70 %
Color: F - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: Medium Blue
Diamond ID: 78448666
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 84 %
Color: E - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 77573168
Natural diamond
RADIANT 1.70 cts.
Sparkle Factor: 72 %
Color: I - Low White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Good
Fluorescence: Faint Blue
Diamond ID: 71167094
Natural diamond
RADIANT 1.92 cts.
Sparkle Factor: 84 %
Color: I - Low White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 74524554
Natural diamond
RADIANT 1.60 cts.
Sparkle Factor: 86 %
Color: E - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 74395543
Natural diamond
RADIANT 1.51 cts.
Sparkle Factor: 75 %
Color: I - Low White
Clarity: VVS1 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: Strong Blue
Diamond ID: 74281353
Natural diamond
RADIANT 1.67 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: 70857584
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 67 %
Color: H - White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: Strong Blue
Diamond ID: 73682166
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 84 %
Color: F - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Excellent
Fluorescence: None
Diamond ID: 74208093
Natural diamond
RADIANT 1.90 cts.
Sparkle Factor: 79 %
Color: E - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 71810342
Natural diamond
RADIANT 1.71 cts.
Sparkle Factor: 75 %
Color: G - Very White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 73415039
Natural diamond
RADIANT 1.70 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 79729434
Natural diamond
RADIANT 1.53 cts.
Sparkle Factor: 86 %
Color: F - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 74108609
Natural diamond
RADIANT 1.51 cts.
Sparkle Factor: 76 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: Faint Blue
Diamond ID: 70510793
Natural diamond
RADIANT 1.63 cts.
Sparkle Factor: 86 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 73563183
Natural diamond
RADIANT 1.52 cts.
Sparkle Factor: 89 %
Color: H - White
Clarity: VVS1 - V.V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 77273809
Natural diamond
RADIANT 1.82 cts.
Sparkle Factor: 87 %
Color: F - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 77586312
Natural diamond
RADIANT 1.60 cts.
Sparkle Factor: 82 %
Color: G - Very White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 75146045
Natural diamond
RADIANT 1.94 cts.
Sparkle Factor: 65 %
Color: G - Very White
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Good
Fluorescence: Medium Blue
Diamond ID: 77897810
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 85 %
Color: G - Very White
Clarity: VS1 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 75736325
Natural diamond
RADIANT 1.50 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 78437222
Natural diamond
RADIANT 1.70 cts.
Sparkle Factor: 80 %
Color: F - Colorless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 78779514
Natural diamond
RADIANT 1.51 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Excellent
Fluorescence: None
Diamond ID: 70780407
1.5 carat square radiant 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 radiant diamond?
A 1.5 carat square radiant diamond typically measures about 6.4 mm, based on the stones in our stock today. A round diamond of the same weight measures about 7.3 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 1.5 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. 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 radiant 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 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 1.5 carat square radiant diamond in our stock is $4,240 natural, against $404 lab grown. Compare 1.5 carat square radiant lab grown diamonds.
Other sizes
Compare square radiant natural diamonds at 1 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 1.5 carat square radiant diamond?
A 1.5 carat square radiant diamond typically measures about 6.4 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 radiant natural diamond cost?
Today our 1.5 carat square radiant natural diamonds range from $4,240 to $28,718, across 92 stones. Color, clarity, cut and the exact carat weight make the difference.
Should I choose a natural or lab grown 1.5 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 1.5 carat square radiant diamond in our stock is $4,240 natural, against $404 lab grown. Both are graded on the same 4Cs and come with a certificate.
What color and clarity should a 1.5 carat square radiant 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.
