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Emerald|Lab Grown|IGI

0.51ct H SI1 Emerald Lab Grown Diamond

ID • H/SI1 • IGI LG538298126

Shape and cutting style on the report: Emerald cut

Certificate IGI LG538298126

Diamond specifications and retailer prices

From £93 GBP
$124 USD
As of October 29, 2026
Save £299 GBP (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £966 GBP at MOH London · As of October 21, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG538298126 or 538298126. Listed at 11 retailers as of October 29, 2026, with a 323% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle22.7°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG538298126
Dimensions5.85 × 3.75 × 2.40 mm
L/W Ratio1.56
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
5.85 mm3.75 mm0.51 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG538298126
Side View
Table 67.5%Crown 22.7°Girdle: Slightly ThickPavilion 40.2°Culet: LNGDepth 64.0%

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 29
Current: £966 GBP|Low: £89 GBP|High: £972 GBP|Avg: £309 GBP|+0.5%
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
October 30, 2026
Retailer 7£93 GBP
Retailer 12£107 GBP
Retailer 8£122 GBP
Retailer 11£122 GBP
Retailer 2£187 GBP
Retailer 9£222 GBP
Retailer 3£258 GBP
Retailer 13£285 GBP
Retailer 10£370 GBP
Retailer 6£391 GBP
Retailer 5£396 GBP
Retailer 4£433 GBP
MOH London£966 GBP

13 data points across 13 retailers

11 retailers£93 GBP to £391 GBP

A
Cheapest Retailer
-
£93 GBP
$124 USD
A
Retailer 2
-
£107 GBP
$144 USD
View
A
Retailer 3
-
£122 GBP
$164 USD
View
A
Retailer 4
-
£122 GBP
$164 USD
View
A
Retailer 5
-
£187 GBP
$250 USD
View
B+
Retailer 6
-
£222 GBP
$297 USD
View
B+
Retailer 7
-
£258 GBP
HK$2,700 HKD
View
B+
Retailer 8
-
£285 GBP
$382 USD
View
B
Retailer 9
-
£370 GBP
$496 USD
View
B
Retailer 10
-
£391 GBP
$524 USD
View
Most Expensive
MOH London
LG538298126 · Oct 21
£966 GBP
View
Price last confirmed 10 days ago
10 more retailers have this diamond
Prices start from £93 GBPSave up to £299 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 Emerald
£93 GBP