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Emerald|Lab Grown|IGI

0.51ct G SI1 Emerald Lab Grown Diamond

ID • G/SI1 • IGI LG758555865

Shape and cutting style on the report: Emerald cut

Certificate IGI LG758555865

Diamond specifications and retailer prices

From $213 NZD
$120 USD
As of November 1, 2026
Save $735 NZD (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,199 NZD at MOH London · As of November 1, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG758555865 or 758555865. Listed at 14 retailers as of October 31, 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. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG758555865
Dimensions5.34 × 3.71 × 2.63 mm
L/W Ratio1.44
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.34 mm3.71 mm0.51 ctG / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG758555865
Side View
Table 64.0%Crown 37.5°Girdle: ThickPavilion 40.7°Culet: LargeDepth 70.9%

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: Nov 1
Current: $2,199 NZD|Low: $204 NZD|High: $2,224 NZD|Avg: $624 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
November 2, 2026
Retailer 10$213 NZD
Retailer 4$247 NZD
Retailer 3$280 NZD
Retailer 12$280 NZD
Retailer 11$373 NZD
Retailer 8$381 NZD
Retailer 6$444 NZD
Retailer 7$475 NZD
Retailer 2$542 NZD
Retailer 5$802 NZD
Retailer 13$846 NZD
Retailer 9$944 NZD
MOH London$2,199 NZD

45 data points across 13 retailers

14 retailers$213 NZD to $948 NZD

A
Cheapest Retailer
-
$213 NZD
$120 USD
A
Retailer 2
-
$247 NZD
$139 USD
View
B+
Retailer 3
-
$280 NZD
$158 USD
View
Retailer 4
-
$280 NZD
$158 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$373 NZD
$210 USD
View
B+
Retailer 6
-
$444 NZD
$250 USD
View
B+
Retailer 7
-
$475 NZD
€255 EUR
View
B
Retailer 8
-
$542 NZD
£240 GBP
View
B
Retailer 9
-
$739 NZD
SGD 563 SGD
View
B
Retailer 10
-
$802 NZD
$452 USD
View
B
Retailer 11
-
$846 NZD
$477 USD
View
B
Retailer 12
-
$944 NZD
$532 USD
View
B
Retailer 13
-
$948 NZD
$534 USD
View
Most Expensive
MOH London
LG758555865 · Nov 1
$2,199 NZD
£976 GBP
View
Price under review
13 more retailers have this diamond
Prices start from $213 NZDSave up to $735 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
$213 NZD