1 Carat Lab Grown Diamonds
EMERALD 1.01 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9878727204
EMERALD 1.00 cts.
Sparkle Factor: 80 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9878358502
EMERALD 1.02 cts.
Sparkle Factor: 89 %
Colour: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9870102887
EMERALD 1.02 cts.
Sparkle Factor: 84 %
Colour: E - Colourless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9875790876
EMERALD 1.01 cts.
Sparkle Factor: 85 %
Colour: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9874235012
EMERALD 1.03 cts.
Sparkle Factor: 89 %
Colour: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9870799709
EMERALD 1.01 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9871028729
EMERALD 1.02 cts.
Sparkle Factor: 89 %
Colour: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9870141906
EMERALD 1.00 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9877463612
EMERALD 1.01 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9877430669
EMERALD 1.01 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9873526696
EMERALD 1.01 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9875211492
EMERALD 1.00 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9875211499
EMERALD 1.01 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9874666611
EMERALD 1.00 cts.
Sparkle Factor: 80 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9874614307
EMERALD 1.00 cts.
Sparkle Factor: 86 %
Colour: E - Colourless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9873401886
EMERALD 1.07 cts.
Sparkle Factor: 89 %
Colour: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9875699099
EMERALD 1.01 cts.
Sparkle Factor: 84 %
Colour: F - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9875622252
EMERALD 1.00 cts.
Sparkle Factor: 83 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9873700568
EMERALD 1.01 cts.
Sparkle Factor: 85 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9874078289
EMERALD 1.01 cts.
Sparkle Factor: 84 %
Colour: F - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9876278462
RADIANT 1.07 cts.
Sparkle Factor: 82 %
Colour: H - White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9877182360
EMERALD 1.10 cts.
Sparkle Factor: 89 %
Colour: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9877119071
EMERALD 1.05 cts.
Sparkle Factor: 82 %
Colour: F - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9870659219
EMERALD 1.01 cts.
Sparkle Factor: 86 %
Colour: F - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9870795623
EMERALD 1.00 cts.
Sparkle Factor: 86 %
Colour: F - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9871368782
EMERALD 1.08 cts.
Sparkle Factor: 84 %
Colour: F - Colourless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9872240990
EMERALD 1.00 cts.
Sparkle Factor: 86 %
Colour: F - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9877474658
HEART 1.00 cts.
Sparkle Factor: 86 %
Colour: E - Colourless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9877376370
RADIANT 1.00 cts.
Sparkle Factor: 84 %
Colour: G - Very White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9872323396
EMERALD 1.01 cts.
Sparkle Factor: 84 %
Colour: F - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9870425504
PEARSHAPE 1.00 cts.
Sparkle Factor: 80 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Good
Fluorescence: None
Diamond ID: 9870579189
RADIANT 1.04 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9870525857
EMERALD 1.08 cts.
Sparkle Factor: 85 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9876597605
EMERALD 1.06 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9875730199
PEARSHAPE 1.02 cts.
Sparkle Factor: 85 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9874569486
EMERALD 1.02 cts.
Sparkle Factor: 84 %
Colour: G - Very White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9874658715
EMERALD 1.03 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9873254101
EMERALD 1.04 cts.
Sparkle Factor: 86 %
Colour: F - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9875318313
EMERALD 1.08 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9874907987
EMERALD 1.04 cts.
Sparkle Factor: 82 %
Colour: F - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9877461224
RADIANT 1.04 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9879915253
RADIANT 1.05 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9877405148
EMERALD 1.03 cts.
Sparkle Factor: 84 %
Colour: G - Very White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9877787172
EMERALD 1.00 cts.
Sparkle Factor: 83 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9878613166
PEARSHAPE 1.04 cts.
Sparkle Factor: 80 %
Colour: G - Very White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9872269060
EMERALD 1.00 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9871763169
PEARSHAPE 1.00 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9871240969
PEARSHAPE 1.10 cts.
Sparkle Factor: 86 %
Colour: F - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9871368705
RADIANT 1.04 cts.
Sparkle Factor: 84 %
Colour: G - Very White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9873565832
RADIANT 1.06 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9873610766
PEARSHAPE 1.02 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9872868877
EMERALD 1.21 cts.
Sparkle Factor: 84 %
Colour: G - Very White
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9874522342
ASSCHER 1.00 cts.
Sparkle Factor: 85 %
Colour: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9875862142
PEARSHAPE 1.09 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9876127702
EMERALD 1.00 cts.
Sparkle Factor: 85 %
Colour: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9875279799
PEARSHAPE 1.09 cts.
Sparkle Factor: 87 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9874124882
PEARSHAPE 1.00 cts.
Sparkle Factor: 80 %
Colour: F - Colourless
Clarity: SI2 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9877474608
PEARSHAPE 1.00 cts.
Sparkle Factor: 89 %
Colour: D - Best a girl can get
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Diamond ID: 9877733937
PEARSHAPE 1.01 cts.
Sparkle Factor: 83 %
Colour: E - Colourless
Clarity: SI1 - Slight Marks
Cut: Fancy
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Diamond ID: 9870665939
1 carat 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. A 1 carat round diamond measures about 6.5 mm across.
How big is a 1 carat diamond in each shape?
Carat measures weight, not size, so the same carat weight looks different in each shape. These are the typical measurements of the 1 carat lab grown diamonds in our stock today:
| Shape | Typical size | Available | From |
|---|---|---|---|
| Round | 6.5 mm | 69,736 | £230 |
| Oval | 8.2 x 5.6 mm | 17,237 | £230 |
| Cushion | 6.7 x 5.4 mm | 12,376 | £220 |
| Square cushion | 5.9 x 5.7 mm | 3,767 | £227 |
| Elongated cushion | 7.1 x 5.2 mm | 8,479 | £220 |
| Emerald cut | 6.9 x 4.7 mm | 12,944 | £191 |
| Princess cut | 5.5 mm | 8,275 | £220 |
| Radiant | 7.0 x 5.0 mm | 9,186 | £202 |
| Square radiant | 5.6 mm | 368 | £223 |
| Elongated radiant | 7.1 x 5.0 mm | 8,790 | £202 |
| Asscher cut | 5.6 mm | 3,264 | £216 |
| Marquise | 10.4 x 5.2 mm | 12,015 | £230 |
| Heart shaped | 7.0 x 6.3 mm | 7,952 | £205 |
| Pear shaped | 9.0 x 5.6 mm | 15,316 | £205 |
Choosing a 1 carat diamond
At this size G or H colour and VS2 or SI1 clarity usually look white and clean to the eye, leaving more of your budget for cut and size. Use the shape filter above, or go straight to round, oval, cushion, square cushion, elongated cushion, emerald cut, princess cut, radiant, square radiant, elongated radiant, Asscher cut, marquise, heart shaped or pear shaped.
1 carat 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 diamond in our stock is £191 lab grown, against £630 natural. Compare 1 carat natural diamonds.
Other sizes
Compare lab grown diamonds at 1.5 carat, 2 carat, 3 carat or 5 carat.
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
Which diamond shape looks biggest at 1 carat?
In our current stock the marquise shows the most surface from above at 1 carat, measuring about 10.4 x 5.2 mm. Elongated shapes such as marquise, oval and pear generally look larger than a round of the same weight.
How much does a 1 carat lab grown diamond cost?
Today our 1 carat lab grown diamonds range from £191 to £7,132, across 169,214 stones. Colour, clarity, cut and the exact carat weight make the difference.
Should I choose a natural or lab grown 1 carat 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 diamond in our stock is £191 lab grown, against £630 natural. Both are graded on the same 4Cs and come with a certificate.
What colour and clarity should a 1 carat diamond be?
At this size G or H colour and VS2 or SI1 clarity usually look white and clean to the eye, leaving more of your budget for cut and size.
