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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 $613 USD
As of November 1, 2026
Save $490 USD (44%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,103 USD at 77 Diamonds · As of November 2, 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 $613 to $1,103, a $490 spread on the same certified stone. 77 Diamonds lists it at $1,103. 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
Color
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

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $1,103 USD|Low: $613 USD|High: $1,157 USD|Avg: $941 USD|-4.7%
77 Diamonds
Retailer 2
November 2, 2026
Retailer 2$613 USD
77 Diamonds$1,103 USD

13 data points across 2 retailers

2 retailers$613 USD to $1,103 USD

A
Cheapest Retailer
-
$613 USD
Final sale: no returns
Most Expensive
B+
77 Diamonds
HSTVSNTWTDK3R · Nov 2
$1,103 USD
£868 GBP
View
1 more retailer has this diamond
Prices start from $613 USDSave up to $490 USD

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
$613 USD