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Emerald|Lab Grown|IGI

0.51ct E SI1 Emerald Lab Grown Diamond

GD • E/SI1 • IGI LG553217872

Shape and cutting style on the report: Emerald cut

Certificate IGI LG553217872

Diamond specifications and retailer prices

From $185 NZD
As of November 6, 2026
Save $639 NZD (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,112 NZD at MOH London · As of November 5, 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 E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG553217872 or 553217872. Listed at 15 retailers as of November 4, 2026, with a 345% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle32.7°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG553217872
Dimensions5.46 × 3.88 × 2.44 mm
L/W Ratio1.41
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
5.46 mm3.88 mm0.51 ctE / SI1
OriginLab Grown
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG553217872
Side View
Table 70.0%Crown 32.7°Girdle: MediumPavilion 36.4°Culet: LNGDepth 62.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,112 NZD|Low: $178 NZD|High: $2,144 NZD|Avg: $588 NZD|-0.3%
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
Retailer 14
Retailer 15
November 6, 2026
Retailer 14$185 NZD
Retailer 10$206 NZD
Retailer 8$215 NZD
Retailer 3$245 NZD
Retailer 6$245 NZD
Retailer 9$294 NZD
Retailer 4$461 NZD
Retailer 2$511 NZD
Retailer 12$612 NZD
Retailer 15$619 NZD
Retailer 7$640 NZD
Retailer 5$817 NZD
Retailer 11$820 NZD
Retailer 13$824 NZD
MOH London$2,112 NZD

45 data points across 15 retailers

15 retailers$185 NZD to $824 NZD

B+
Cheapest Retailer
-
$185 NZD
B+
Retailer 2
-
$206 NZD
View
Final sale: no returns
B+
Retailer 3
-
$215 NZD
View
B+
Retailer 4
-
$245 NZD
View
Retailer 5
-
$245 NZD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$294 NZD
View
B
Retailer 7
-
$461 NZD
View
B
Retailer 8
-
$511 NZD
View
B
Retailer 9
-
$612 NZD
View
B
Retailer 10
-
$619 NZD
View
B
Retailer 11
-
$640 NZD
View
B
Retailer 12
-
$817 NZD
View
C
Retailer 13
-
$820 NZD
View
B
Retailer 14
-
$824 NZD
View
Most Expensive
MOH London
LG553217872 · Nov 5
$2,112 NZD
£935 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $185 NZDSave up to $639 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.

B+
0.51ct Emerald
$185 NZD