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Cushion|Lab Grown|IGI

0.51ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG844678170

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG844678170

Diamond specifications and retailer prices

From £138 GBP
$185 USD
As of October 28, 2026
Save £741 GBP (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £879 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 0.51ct lab-grown cushion diamond

This 0.51ct lab-grown cushion sits in the half to three-quarter carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG844678170 or 844678170. Listed at 13 retailers as of October 26, 2026, with prices from £138 to £879, a £741 spread on the same certified stone. MOH London lists it at £879. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle32.1°
Pavilion angle45.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844678170
Dimensions4.53 × 4.49 × 3.21 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
4.53 mm4.49 mm0.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG844678170
Side View
Table 63.0%Crown 32.1°Girdle: THK-VTKPavilion 45.7°Culet: NoneDepth 71.5%

Caratlytics Score

How it works →
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: Oct 28
Current: £879 GBP|Low: £87 GBP|High: £879 GBP|Avg: £305 GBP|+8.4%
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
October 29, 2026
Retailer 7£91 GBP
Retailer 11£138 GBP
Retailer 5£168 GBP
Retailer 14£182 GBP
Retailer 3£186 GBP
Retailer 2£187 GBP
Retailer 8£200 GBP
Retailer 12£243 GBP
Retailer 10£286 GBP
Retailer 4£367 GBP
Retailer 6£502 GBP
Retailer 13£535 GBP
Retailer 9£674 GBP
MOH London£879 GBP

16 data points across 14 retailers

13 retailers£138 GBP to £879 GBP

A
Cheapest Retailer
-
£138 GBP
$185 USD
Retailer 2
-
£168 GBP
$225 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
£182 GBP
ZAR 3,941 ZAR
View
B+
Retailer 4
-
£186 GBP
$249 USD
View
A
Retailer 5
-
£187 GBP
€238 EUR
View
B+
Retailer 6
-
£200 GBP
View
B+
Retailer 7
-
£243 GBP
View
B
Retailer 8
-
£286 GBP
SGD 517 SGD
View
B
Retailer 9
-
£367 GBP
$492 USD
View
B
Retailer 10
-
£502 GBP
View
B
Retailer 11
-
£535 GBP
View
B
Retailer 12
-
£674 GBP
$903 USD
View
Most Expensive
B
MOH London
LG844678170 · Oct 26
£879 GBP
View
12 more retailers have this diamond
Prices start from £138 GBPSave up to £741 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 Cushion
£138 GBP