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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 $171 AUD
$120 USD
As of October 29, 2026
Save $589 AUD (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,765 AUD 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 29, 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: Oct 29
Current: $1,765 AUD|Low: $164 AUD|High: $1,784 AUD|Avg: $499 AUD
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 1, 2026
Retailer 10$171 AUD
Retailer 4$198 AUD
Retailer 3$225 AUD
Retailer 12$225 AUD
Retailer 11$299 AUD
Retailer 8$306 AUD
Retailer 6$356 AUD
Retailer 7$381 AUD
Retailer 2$435 AUD
Retailer 5$643 AUD
Retailer 13$679 AUD
Retailer 9$757 AUD
MOH London$1,765 AUD

45 data points across 13 retailers

14 retailers$171 AUD to $760 AUD

A
Cheapest Retailer
-
$171 AUD
$120 USD
A
Retailer 2
-
$198 AUD
$139 USD
View
B+
Retailer 3
-
$225 AUD
$158 USD
View
Retailer 4
-
$225 AUD
$158 USD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$299 AUD
$210 USD
View
B+
Retailer 6
-
$356 AUD
$250 USD
View
B+
Retailer 7
-
$381 AUD
€255 EUR
View
B
Retailer 8
-
$435 AUD
£240 GBP
View
B
Retailer 9
-
$593 AUD
SGD 563 SGD
View
B
Retailer 10
-
$643 AUD
$452 USD
View
B
Retailer 11
-
$679 AUD
$477 USD
View
B
Retailer 12
-
$757 AUD
$532 USD
View
B
Retailer 13
-
$760 AUD
$534 USD
View
Most Expensive
MOH London
LG758555865 · Nov 1
$1,765 AUD
£976 GBP
View
Price under review
13 more retailers have this diamond
Prices start from $171 AUDSave up to $589 AUD

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
$171 AUD