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Emerald|Lab Grown|IGI

0.51ct E SI1 Emerald Lab Grown Diamond

GD • E/SI1 • IGI LG553217872

Shape and cutting style on the report: Emerald cut

Certificate IGI LG553217872

Diamond specifications and retailer prices

From £77 GBP
As of November 6, 2026
Save £267 GBP (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £882 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 0.51ct lab-grown emerald diamond

This 0.51ct lab-grown emerald sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG553217872 or 553217872. Listed at 15 retailers as of November 4, 2026, with a 345% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle32.7°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG553217872
Dimensions5.46 × 3.88 × 2.44 mm
L/W Ratio1.41
Culet sizeLong
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
5.46 mm3.88 mm0.51 ctE / SI1
OriginLab Grown
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG553217872
Side View
Table 70.0%Crown 32.7°Girdle: MediumPavilion 36.4°Culet: LNGDepth 62.9%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £882 GBP|Low: £74 GBP|High: £895 GBP|Avg: £246 GBP|-0.3%
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 6, 2026
Retailer 14£77 GBP
Retailer 10£86 GBP
Retailer 8£90 GBP
Retailer 3£103 GBP
Retailer 6£103 GBP
Retailer 9£123 GBP
Retailer 4£192 GBP
Retailer 2£213 GBP
Retailer 12£256 GBP
Retailer 15£259 GBP
Retailer 7£267 GBP
Retailer 5£341 GBP
Retailer 11£343 GBP
Retailer 13£344 GBP
MOH London£882 GBP

45 data points across 15 retailers

15 retailers£77 GBP to £344 GBP

B+
Cheapest Retailer
-
£77 GBP
B+
Retailer 2
-
£86 GBP
View
Final sale: no returns
B+
Retailer 3
-
£90 GBP
View
B+
Retailer 4
-
£103 GBP
View
Retailer 5
-
£103 GBP
View
Price last confirmed 12 days ago
B+
Retailer 6
-
£123 GBP
View
B
Retailer 7
-
£192 GBP
View
B
Retailer 8
-
£213 GBP
View
B
Retailer 9
-
£256 GBP
View
B
Retailer 10
-
£259 GBP
View
B
Retailer 11
-
£267 GBP
View
B
Retailer 12
-
£341 GBP
View
C
Retailer 13
-
£343 GBP
View
B
Retailer 14
-
£344 GBP
View
Most Expensive
MOH London
LG553217872 · Nov 5
£882 GBP
View
Price under review
14 more retailers have this diamond
Prices start from £77 GBPSave up to £267 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 Emerald
£77 GBP