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Round|Lab Grown|IGI

0.51ct G VS1 Round Lab Grown Diamond

VG • G/VS1 • IGI LG803661987

Shape and cutting style on the report: Round brilliant

Certificate IGI LG803661987

Diamond specifications and retailer prices

From £105 GBP
HK$1,100 HKD
As of November 1, 2026
Save £526 GBP (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £631 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 0.51ct lab-grown round diamond

This 0.51ct lab-grown round sits in the half to three-quarter carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG803661987 or 803661987. Listed at 9 retailers as of October 26, 2026, with prices from £105 to £631, a £526 spread on the same certified stone. MOH London lists it at £631. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
G
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.8°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803661987
Dimensions5.04 × 5.09 × 3.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.04 mm5.09 mm0.51 ctG / VS1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG803661987
Side View
Table 63.0%Crown 36.8°Girdle: Slightly ThickPavilion 41.3°CuletDepth 62.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £631 GBP|Low: £118 GBP|High: £648 GBP|Avg: £257 GBP|-1.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 5£153 GBP
Retailer 4£160 GBP
Retailer 2£161 GBP
Retailer 6£178 GBP
Retailer 3£233 GBP
Retailer 7£259 GBP
Retailer 8£320 GBP
MOH London£631 GBP

38 data points across 8 retailers

9 retailers£105 GBP to £631 GBP

B+
Cheapest Retailer
-
£105 GBP
HK$1,100 HKD
Retailer 2
-
£153 GBP
$205 USD
View
Price last confirmed 11 days ago
B+
Retailer 3
-
£160 GBP
View
B+
Retailer 4
-
£161 GBP
€205 EUR
View
Retailer 5
-
£178 GBP
$239 USD
View
Price last confirmed 7 days ago
B
Retailer 6
-
£233 GBP
$312 USD
View
B
Retailer 7
-
£259 GBP
$347 USD
View
B
Retailer 8
-
£320 GBP
$429 USD
View
Most Expensive
B
MOH London
LG803661987 · Oct 26
£631 GBP
View
8 more retailers have this diamond
Prices start from £105 GBPSave up to £526 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
0.51ct Round
£105 GBP