Round Lab Grown Diamonds
Lab-grown diamond
ROUND 0.40 cts.
Sparkle Factor: 87 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9673409278
Lab-grown diamond
ROUND 0.40 cts.
Sparkle Factor: 84 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9674242257
Lab-grown diamond
ROUND 0.40 cts.
Sparkle Factor: 88 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Excellent
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9572941650
Lab-grown diamond
ROUND 0.40 cts.
Sparkle Factor: 86 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Excellent
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9573409390
Lab-grown diamond
ROUND 0.40 cts.
Sparkle Factor: 90 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Very Good
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9576286730
Lab-grown diamond
ROUND 0.40 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9578064478
Lab-grown diamond
ROUND 0.40 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9579509428
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Excellent
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9670515083
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 84 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9671552358
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9672674025
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Excellent
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9672741351
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 84 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9672741953
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Ideal
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9672940348
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 87 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9672941560
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Excellent
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9676288108
Lab-grown diamond
ROUND 0.40 cts.
Sparkle Factor: 86 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9677258791
Lab-grown diamond
ROUND 0.40 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9677875275
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Very Good
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9677997909
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9677998511
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 87 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9678138559
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 84 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Very Good
Polish: Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9679312950
Lab-grown diamond
ROUND 0.43 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9570055778
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 81 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9570717803
Lab-grown diamond
ROUND 0.43 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9571496141
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9573143117
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9573335911
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 90 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9574494042
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9575381845
Lab-grown diamond
ROUND 0.43 cts.
Sparkle Factor: 78 %
Color: E - Colorless
Clarity: SI1 - Slight Marks
Cut: Very Good
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9576082196
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9576256573
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Excellent
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9576266346
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9576662244
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9576903892
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9577101887
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 92 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9579402446
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 88 %
Color: F - Colorless
Clarity: SI1 - Slight Marks
Cut: Ideal
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9579526919
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9670515076
Lab-grown diamond
ROUND 0.44 cts.
Sparkle Factor: 84 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9670717082
Lab-grown diamond
ROUND 0.43 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9671234256
Lab-grown diamond
ROUND 0.43 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9671234459
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9671234508
Lab-grown diamond
ROUND 0.43 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9671234641
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9671234914
Lab-grown diamond
ROUND 0.44 cts.
Sparkle Factor: 81 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Good
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9672270454
Lab-grown diamond
ROUND 0.43 cts.
Sparkle Factor: 81 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Good
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9672270489
Lab-grown diamond
ROUND 0.43 cts.
Sparkle Factor: 83 %
Color: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9672270505
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 86 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Good
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9672519703
Lab-grown diamond
ROUND 0.43 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Excellent
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9672673983
Lab-grown diamond
ROUND 0.43 cts.
Sparkle Factor: 88 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Excellent
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9672674095
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 84 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9672674102
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 77 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Good
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9672740987
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 84 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9672741036
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Excellent
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9672741148
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 81 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9672741239
Lab-grown diamond
ROUND 0.43 cts.
Sparkle Factor: 87 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9672741246
Lab-grown diamond
ROUND 0.43 cts.
Sparkle Factor: 83 %
Color: E - Colorless
Clarity: VS2 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9672741281
Lab-grown diamond
ROUND 0.41 cts.
Sparkle Factor: 86 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9672741393
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 89 %
Color: D - Best a girl can get
Clarity: VS2 - V.Slight Marks
Cut: Ideal
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9672741680
Lab-grown diamond
ROUND 0.42 cts.
Sparkle Factor: 86 %
Color: D - Best a girl can get
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9672741995
Lab-grown diamond
ROUND 0.43 cts.
Sparkle Factor: 84 %
Color: E - Colorless
Clarity: VS1 - V.Slight Marks
Cut: Very Good
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9672742170
Round lab grown diamonds: what to look for
Cut grade matters most in a round: choose Excellent (GIA) or Ideal/Excellent (IGI) for the most sparkle. Our round diamond guide covers the shape in more detail.
Round diamond sizes and prices
Carat measures weight, not size. These are the typical measurements and lowest prices of the round lab grown diamonds in our stock today, by carat size:
| Carat | Typical size | Available | From |
|---|---|---|---|
| 1 carat | 6.5 mm | 66,548 | $313 |
| 1.5 carat | 7.4 mm | 51,761 | $428 |
| 2 carat | 8.1 mm | 40,075 | $539 |
| 3 carat | 9.3 mm | 18,690 | $761 |
| 5 carat | 11.0 mm | 8,515 | $1,325 |
Round lab grown diamond prices
Today our round lab grown diamonds range from $174 to $304,647, across 291,447 stones. Carat weight makes the biggest difference, followed by color, clarity and cut. Prices step up at the whole and half carat marks, so a stone just over 1.00, 1.50 or 2.00 carats gives the size for the smallest 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. From one carat up, our lowest priced round diamond today is $313 lab grown, against $1,209 natural. Compare round natural diamonds.
Choosing color and clarity
Up to about 1.5 carats, G or H color and VS2 or SI1 clarity usually look white and clean to the eye. From 2 carats color and inclusions are easier to see, so G or better and VS2 or better are worth considering.
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 round diamond?
A 1 carat round diamond typically measures about 6.5 mm across, based on the stones in our stock today. Carat measures weight, not size, so exact measurements are on each stone's certificate.
How much does a round lab grown diamond cost?
Today our round lab grown diamonds range from $174 to $304,647, across 291,447 stones. Carat weight makes the biggest difference, followed by color, clarity and cut.
Should I choose a natural or lab grown round 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. From one carat up, our lowest priced round diamond today is $313 lab grown, against $1,209 natural. Both are graded on the same 4Cs and come with a certificate.
What color and clarity should a round diamond be?
Cut grade matters most in a round: choose Excellent (GIA) or Ideal/Excellent (IGI) for the most sparkle. Up to about 1.5 carats, G or H color and VS2 or SI1 clarity usually look white and clean to the eye. From 2 carats color and inclusions are easier to see, so G or better and VS2 or better are worth considering.
