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Round|Lab Grown|IGI

0.51ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG502108778

Shape and cutting style on the report: Round brilliant

Certificate IGI LG502108778

Diamond specifications and retailer prices

From £239 GBP
$320 USD
As of October 31, 2026
Save £1,087 GBP (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,326 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG502108778 or 502108778. Listed at 13 retailers as of October 31, 2026, with prices from £239 to £1,326, a £1,087 spread on the same certified stone. MOH London lists it at £1,326. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG502108778
Dimensions5.22 × 5.18 × 3.13 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
5.22 mm5.18 mm0.51 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG502108778
Side View
Table 58.0%Crown 33.4°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £1,326 GBP|Low: £219 GBP|High: £1,342 GBP|Avg: £580 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
Retailer 16
Retailer 17
November 2, 2026
Retailer 11£239 GBP
Retailer 14£274 GBP
Retailer 3£307 GBP
Retailer 5£317 GBP
Retailer 15£340 GBP
Retailer 17£340 GBP
Retailer 8£345 GBP
Retailer 6£452 GBP
Retailer 16£542 GBP
Retailer 10£609 GBP
Retailer 2£616 GBP
Retailer 7£630 GBP
Retailer 9£711 GBP
Retailer 12£864 GBP
Retailer 13£995 GBP
Retailer 4£1,091 GBP
MOH London£1,326 GBP

31 data points across 17 retailers

13 retailers£239 GBP to £1,326 GBP

A
Cheapest Retailer
-
£239 GBP
$320 USD
A
Retailer 2
-
£274 GBP
$367 USD
View
A
Retailer 3
-
£307 GBP
$411 USD
View
Final sale: no returns
A
Retailer 4
-
£317 GBP
$425 USD
View
Retailer 5
-
£340 GBP
$455 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
£340 GBP
$455 USD
View
B+
Retailer 7
-
£542 GBP
$726 USD
View
B+
Retailer 8
-
£609 GBP
€777 EUR
View
B+
Retailer 9
-
£616 GBP
ZAR 13,335 ZAR
View
B
Retailer 10
-
£864 GBP
A$1,781 AUD
View
B
Retailer 11
-
£995 GBP
$1,333 USD
View
B
Retailer 12
-
£1,091 GBP
$1,462 USD
View
Most Expensive
B
MOH London
LG502108778 · Nov 1
£1,326 GBP
View
12 more retailers have this diamond
Prices start from £239 GBPSave up to £1,087 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
£239 GBP