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Heart|Lab Grown|IGI

0.51ct E SI1 Heart Lab Grown Diamond

EX • E/SI1 • IGI LG831650686

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831650686

Diamond specifications and retailer prices

From HK$1,318 HKD
$168 USD
As of October 30, 2026
Save HK$5,816 HKD (82%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: HK$7,134 HKD at MOH London · As of October 25, 2026
View at MOH London

About this 0.51ct lab-grown heart diamond

This 0.51ct lab-grown heart sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG831650686 or 831650686. Listed at 5 retailers as of October 25, 2026, with prices from HK$1,318 to HK$7,134, a HK$5,816 spread on the same certified stone. MOH London lists it at HK$7,134. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831650686
Dimensions5.63 × 4.94 × 3.16 mm
L/W Ratio1.14
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.63 mm4.94 mm0.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG831650686
Side View
Table 64.0%Crown 36°Girdle: THN-MEDPavilion 37.6°Culet: NoneDepth 56.1%

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 30
Current: HK$7,134 HKD|Low: HK$1,318 HKD|High: HK$7,204 HKD|Avg: HK$3,047 HKD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 5HK$1,318 HKD
Retailer 2HK$1,876 HKD
Retailer 3HK$2,340 HKD
Retailer 4HK$2,785 HKD
MOH LondonHK$7,134 HKD

41 data points across 5 retailers

5 retailersHK$1,318 HKD to HK$7,134 HKD

A
Cheapest Retailer
-
HK$1,318 HKD
$168 USD
B+
Retailer 2
-
HK$1,876 HKD
£188 GBP
View
B+
Retailer 3
-
HK$2,340 HKD
£235 GBP
View
B
Retailer 4
-
HK$2,785 HKD
$355 USD
View
Most Expensive
B
MOH London
LG831650686 · Oct 25
HK$7,134 HKD
£716 GBP
View
4 more retailers have this diamond
Prices start from HK$1,318 HKDSave up to HK$5,816 HKD

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 Heart
HK$1,318 HKD