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Heart|Lab Grown|IGI

4.91ct F SI1 Heart Lab Grown Diamond

EX • F/SI1 • IGI LG847615685

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG847615685

Diamond specifications and retailer prices

From HK$4,810 HKD
$613 USD
As of November 1, 2026
Save HK$3,757 HKD (44%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$8,567 HKD at 77 Diamonds · As of November 3, 2026
View at 77 Diamonds

About this 4.91ct lab-grown heart diamond

This 4.91ct lab-grown heart sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG847615685 or 847615685. Listed at 2 retailers as of November 1, 2026, with prices from HK$4,810 to HK$8,567, a HK$3,757 spread on the same certified stone. 77 Diamonds lists it at HK$8,567. 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

4.91
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847615685
Dimensions10.69 × 12.02 × 6.70 mm
L/W Ratio1.12
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.69 mm12.02 mm4.91 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847615685
Side View
Table 61.0%Crown 34.6°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 55.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: HK$8,567 HKD|Low: HK$4,810 HKD|High: HK$9,078 HKD|Avg: HK$7,323 HKD|-5.6%
77 Diamonds
Retailer 2
November 3, 2026
Retailer 2HK$4,810 HKD
77 DiamondsHK$8,567 HKD

14 data points across 2 retailers

2 retailersHK$4,810 HKD to HK$8,567 HKD

A
Cheapest Retailer
-
HK$4,810 HKD
$613 USD
Final sale: no returns
Most Expensive
B+
77 Diamonds
HSTVSNTWTDK3R · Nov 3
HK$8,567 HKD
£860 GBP
View
1 more retailer has this diamond
Prices start from HK$4,810 HKDSave up to HK$3,757 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
4.91ct Heart
HK$4,810 HKD