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Round|Lab Grown|GIA

0.51ct G SI2 Round Lab Grown Diamond

EX • G/SI2

Diamond specifications and retailer prices

From £361 GBP
CA$672 CAD
As of October 30, 2026
3 retailers carry this diamond
Most expensive: £692 GBP at MOH London · As of October 18, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 3 retailers as of October 30, 2026. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
Dimensions5.14 × 5.09 × 3.11 mm
L/W Ratio1.01
Top View
5.14 mm5.09 mm0.51 ctG / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 62.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 60.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: £692 GBP|Low: £180 GBP|High: £692 GBP|Avg: £332 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
October 18, 2026
Retailer 2£180 GBP
Retailer 3£322 GBP
Retailer 4£361 GBP
MOH London£692 GBP

4 data points across 4 retailers

3 retailers

Retailer 1
-
£322 GBP
$431 USD
Price last confirmed 10 days ago
B
Retailer 2
-
£361 GBP
CA$672 CAD
View
Most Expensive
MOH London
LG843603767 · Oct 18
£692 GBP
View
Price last confirmed 13 days ago
2 more retailers have this diamond
Prices start from £361 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
£361 GBP