CaratHunter
Plans
Emerald|Lab Grown|IGI

0.51ct G SI1 Emerald Lab Grown Diamond

ID • G/SI1 • IGI LG538286856

Shape and cutting style on the report: Emerald cut

Certificate IGI LG538286856

Diamond specifications and retailer prices

From $220 NZD
$124 USD
As of October 29, 2026
Save $1,470 NZD (87%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,287 NZD at MOH London · As of October 26, 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 LG538286856 or 538286856. Listed at 15 retailers as of October 29, 2026, with a 668% 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle29.3°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG538286856
Dimensions5.59 × 3.74 × 2.44 mm
L/W Ratio1.49
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
5.59 mm3.74 mm0.51 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG538286856
Side View
Table 63.5%Crown 29.3°Girdle: ThickPavilion 33.5°Culet: LNGDepth 65.2%

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: $2,287 NZD|Low: $174 NZD|High: $2,312 NZD|Avg: $630 NZD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 7$220 NZD
Retailer 4$247 NZD
Retailer 12$255 NZD
Retailer 8$291 NZD
Retailer 11$291 NZD
Retailer 5$515 NZD
Retailer 9$527 NZD
Retailer 2$564 NZD
Retailer 3$678 NZD
Retailer 10$880 NZD
Retailer 6$930 NZD
MOH London$2,287 NZD

43 data points across 12 retailers

15 retailers$220 NZD to $1,690 NZD

A
Cheapest Retailer
-
$220 NZD
$124 USD
A
Retailer 2
-
$247 NZD
$139 USD
View
Final sale: no returns
A
Retailer 3
-
$255 NZD
$144 USD
View
A
Retailer 4
-
$291 NZD
$164 USD
View
A
Retailer 5
-
$291 NZD
$164 USD
View
B+
Retailer 6
-
$515 NZD
$290 USD
View
B+
Retailer 7
-
$527 NZD
$297 USD
View
B+
Retailer 8
-
$545 NZD
HK$2,400 HKD
View
B
Retailer 9
-
$564 NZD
£250 GBP
View
B
Retailer 10
-
$678 NZD
$382 USD
View
B
Retailer 11
-
$880 NZD
$496 USD
View
B
Retailer 12
-
$930 NZD
$524 USD
View
B
Retailer 13
-
$980 NZD
$552 USD
View
B
Retailer 14
-
$1,690 NZD
$952 USD
View
Most Expensive
MOH London
LG538286856 · Oct 26
$2,287 NZD
£1,015 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $220 NZDSave up to $1,470 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