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Round|Lab Grown|IGI

0.51ct G IF Round Lab Grown Diamond

ID • G/IF • IGI LG639449053

Shape and cutting style on the report: Round brilliant

Certificate IGI LG639449053

Diamond specifications and retailer prices

From £89 GBP
$120 USD
As of November 1, 2026
Save £840 GBP (90%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £929 GBP at MOH London · As of November 1, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG639449053 or 639449053. Listed at 18 retailers as of November 1, 2026, with prices from £89 to £929, a £840 spread on the same certified stone. MOH London lists it at £929. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
G
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639449053
Dimensions5.14 × 5.11 × 3.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.14 mm5.11 mm0.51 ctG / IF
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG639449053
Side View
Table 58.0%Crown 34°Girdle: MediumPavilion 41.3°Culet: NoneDepth 61.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £929 GBP|Low: £77 GBP|High: £941 GBP|Avg: £243 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 1, 2026
Retailer 12£89 GBP
Retailer 5£101 GBP
Retailer 11£104 GBP
Retailer 3£118 GBP
Retailer 15£118 GBP
Retailer 7£151 GBP
Retailer 2£202 GBP
Retailer 14£205 GBP
Retailer 13£217 GBP
Retailer 8£229 GBP
Retailer 10£261 GBP
Retailer 4£271 GBP
Retailer 6£281 GBP
Retailer 9£358 GBP
MOH London£929 GBP

42 data points across 15 retailers

18 retailers£89 GBP to £929 GBP

A
Cheapest Retailer
-
£89 GBP
$120 USD
A
Retailer 2
-
£104 GBP
$140 USD
View
Retailer 3
-
£118 GBP
$159 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
£118 GBP
$159 USD
View
A
Retailer 5
-
£151 GBP
$202 USD
View
A
Retailer 6
-
£193 GBP
$259 USD
View
A
Retailer 7
-
£202 GBP
ZAR 4,382 ZAR
View
A
Retailer 8
-
£205 GBP
$275 USD
View
A
Retailer 9
-
£217 GBP
€277 EUR
View
B+
Retailer 10
-
£229 GBP
View
B+
Retailer 11
-
£261 GBP
$350 USD
View
B+
Retailer 12
-
£271 GBP
$363 USD
View
B+
Retailer 13
-
£281 GBP
$377 USD
View
B+
Retailer 14
-
£291 GBP
$390 USD
View
B+
Retailer 15
-
£337 GBP
$452 USD
View
B+
Retailer 16
-
£358 GBP
$480 USD
View
B
Retailer 17
-
£400 GBP
$537 USD
View
Most Expensive
B
MOH London
LG639449053 · Nov 1
£929 GBP
View
17 more retailers have this diamond
Prices start from £89 GBPSave up to £840 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.

A
0.51ct Round
£89 GBP