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Emerald|Lab Grown|IGI

1.51ct I SI1 Emerald Lab Grown Diamond

ID • I/SI1 • IGI LG499108039

Shape and cutting style on the report: Emerald cut

Certificate IGI LG499108039

Diamond specifications and retailer prices

From $1,490 NZD
$840 USD
As of October 30, 2026
Save $3,542 NZD (70%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $8,671 NZD at MOH London · As of October 21, 2026
View at MOH London

About this 1.51ct lab-grown emerald diamond

This 1.51ct lab-grown emerald sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499108039 or 499108039. Listed at 10 retailers as of October 28, 2026, with a 238% 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

1.51
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle23.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499108039
Dimensions8.18 × 5.34 × 3.37 mm
L/W Ratio1.53
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
8.18 mm5.34 mm1.51 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG499108039
Side View
Table 65.0%Crown 23.7°Girdle: Slightly ThickPavilion 40.9°Culet: LNGDepth 63.1%

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 30
Current: $8,671 NZD|Low: $1,490 NZD|High: $8,730 NZD|Avg: $3,827 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
October 30, 2026
Retailer 2$1,490 NZD
Retailer 4$2,314 NZD
Retailer 9$2,518 NZD
Retailer 5$2,685 NZD
Retailer 8$2,685 NZD
Retailer 11$2,990 NZD
Retailer 3$3,698 NZD
Retailer 6$4,246 NZD
Retailer 10$5,004 NZD
Retailer 7$5,032 NZD
MOH London$8,671 NZD

14 data points across 11 retailers

10 retailers$1,490 NZD to $5,032 NZD

A
Cheapest Retailer
-
$1,490 NZD
$840 USD
B
Retailer 2
-
$2,314 NZD
$1,304 USD
View
B
Retailer 3
-
$2,518 NZD
$1,419 USD
View
Retailer 4
-
$2,685 NZD
$1,513 USD
View
Price last confirmed 18 days ago
B
Retailer 5
-
$2,685 NZD
$1,513 USD
View
B
Retailer 6
-
$2,990 NZD
$1,685 USD
View
B
Retailer 7
-
$4,246 NZD
$2,393 USD
View
B
Retailer 8
-
$5,004 NZD
$2,820 USD
View
B
Retailer 9
-
$5,032 NZD
$2,836 USD
View
Most Expensive
MOH London
LG499108039 · Oct 21
$8,671 NZD
£3,848 GBP
View
Price last confirmed 10 days ago
9 more retailers have this diamond
Prices start from $1,490 NZDSave up to $3,542 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
1.51ct Emerald
$1,490 NZD