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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 $124 USD
As of October 27, 2026
Save $400 USD (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,294 USD 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 26, 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $1,294 USD|Low: $119 USD|High: $1,303 USD|Avg: $415 USD|+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 18, 2026
Retailer 6$124 USD
Retailer 12$144 USD
Retailer 8$164 USD
Retailer 11$164 USD
Retailer 9$297 USD
Retailer 3$346 USD
Retailer 7$360 USD
Retailer 13$382 USD
Retailer 10$496 USD
Retailer 2$524 USD
Retailer 5$530 USD
Retailer 4$580 USD
MOH London$1,294 USD

12 data points across 13 retailers

11 retailers$124 USD to $524 USD

A
Cheapest Retailer
-
$124 USD
A
Retailer 2
-
$144 USD
View
A
Retailer 3
-
$164 USD
View
A
Retailer 4
-
$164 USD
View
B+
Retailer 5
-
$297 USD
View
B+
Retailer 6
-
$346 USD
HK$2,700 HKD
View
B+
Retailer 7
-
$360 USD
View
B+
Retailer 8
-
$382 USD
View
B
Retailer 9
-
$496 USD
View
B
Retailer 10
-
$524 USD
View
Most Expensive
B
MOH London
LG538298126 · Oct 21
$1,294 USD
£1,019 GBP
View
Price last confirmed 8 days ago
10 more retailers have this diamond
Prices start from $124 USDSave up to $400 USD

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
$124 USD