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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 $220 NZD
$124 USD
As of October 29, 2026
Save $710 NZD (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,296 NZD 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: $2,296 NZD|Low: $211 NZD|High: $2,312 NZD|Avg: $736 NZD|+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$220 NZD
Retailer 12$255 NZD
Retailer 8$291 NZD
Retailer 11$291 NZD
Retailer 2$444 NZD
Retailer 9$527 NZD
Retailer 3$613 NZD
Retailer 13$678 NZD
Retailer 10$880 NZD
Retailer 6$930 NZD
Retailer 5$941 NZD
Retailer 4$1,029 NZD
MOH London$2,296 NZD

13 data points across 13 retailers

11 retailers$220 NZD to $930 NZD

A
Cheapest Retailer
-
$220 NZD
$124 USD
A
Retailer 2
-
$255 NZD
$144 USD
View
A
Retailer 3
-
$291 NZD
$164 USD
View
A
Retailer 4
-
$291 NZD
$164 USD
View
A
Retailer 5
-
$444 NZD
$250 USD
View
B+
Retailer 6
-
$527 NZD
$297 USD
View
B+
Retailer 7
-
$613 NZD
HK$2,700 HKD
View
B+
Retailer 8
-
$678 NZD
$382 USD
View
B
Retailer 9
-
$880 NZD
$496 USD
View
B
Retailer 10
-
$930 NZD
$524 USD
View
Most Expensive
MOH London
LG538298126 · Oct 21
$2,296 NZD
£1,019 GBP
View
Price last confirmed 10 days ago
10 more retailers have this diamond
Prices start from $220 NZDSave up to $710 NZD

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
$220 NZD