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Emerald|Lab Grown|IGI

0.31ct D SI1 Emerald Lab Grown Diamond

EX • D/SI1 • IGI LG822631456

Shape and cutting style on the report: Emerald cut

Certificate IGI LG822631456

Diamond specifications and retailer prices

From $138 NZD
$78 USD
As of October 27, 2026
Save $518 NZD (79%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,257 NZD at MOH London · As of October 26, 2026
View at MOH London

About this 0.31ct lab-grown emerald diamond

This 0.31ct lab-grown emerald sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG822631456 or 822631456. Listed at 13 retailers as of October 27, 2026, with a 374% 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

0.31
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle42.4°
Pavilion angle42.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG822631456
Dimensions4.50 × 3.30 × 2.27 mm
L/W Ratio1.36
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
4.50 mm3.30 mm0.31 ctD / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG822631456
Side View
Table 68.0%Crown 42.4°Girdle: MED-STKPavilion 42.9°Culet: LargeDepth 68.8%

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 27
Current: $1,257 NZD|Low: $138 NZD|High: $1,257 NZD|Avg: $446 NZD
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 28, 2026
Retailer 10$138 NZD
Retailer 8$160 NZD
Retailer 9$257 NZD
Retailer 13$263 NZD
Retailer 6$294 NZD
Retailer 11$335 NZD
Retailer 12$410 NZD
Retailer 3$422 NZD
Retailer 7$439 NZD
Retailer 4$499 NZD
Retailer 2$550 NZD
Retailer 5$656 NZD
MOH London$1,257 NZD

7 data points across 13 retailers

13 retailers$138 NZD to $656 NZD

A
Cheapest Retailer
-
$138 NZD
$78 USD
A
Retailer 2
-
$160 NZD
$90 USD
View
B+
Retailer 3
-
$257 NZD
$145 USD
View
B+
Retailer 4
-
$263 NZD
$148 USD
View
B+
Retailer 5
-
$294 NZD
£130 GBP
View
B+
Retailer 6
-
$335 NZD
€180 EUR
View
B
Retailer 7
-
$410 NZD
$231 USD
View
B+
Retailer 8
-
$422 NZD
CA$330 CAD
View
B+
Retailer 9
-
$439 NZD
£195 GBP
View
B
Retailer 10
-
$499 NZD
$281 USD
View
B
Retailer 11
-
$550 NZD
$310 USD
View
B
Retailer 12
-
$656 NZD
$370 USD
View
Most Expensive
MOH London
LG822631456 · Oct 26
$1,257 NZD
£558 GBP
View
Price under review
12 more retailers have this diamond
Prices start from $138 NZDSave up to $518 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
0.31ct Emerald
$138 NZD