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3.71ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG639459451

Shape and cutting style on the report: Round brilliant

Certificate IGI LG639459451

Diamond specifications and retailer prices

From HK$10,384 HKD
CA$1,838 CAD
As of October 30, 2026
Save HK$3,354 HKD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$13,738 HKD at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 3.71ct lab-grown round diamond

This 3.71ct lab-grown round 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 LG639459451 or 639459451. Listed at 2 retailers as of October 30, 2026, with prices from HK$10,384 to HK$13,738, a HK$3,354 spread on the same certified stone. The Diamond Guys lists it at HK$13,738. 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

3.71
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639459451
Dimensions10.08 × 10.04 × 6.04 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.08 mm10.04 mm3.71 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG639459451
Side View
Table 59.0%Crown 34.2°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.0%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: HK$21,811 HKD|Low: HK$2,103 HKD|High: HK$39,699 HKD|Avg: HK$10,577 HKD|-30.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
The Diamond Guys
August 3, 2026
Retailer 4HK$5,717 HKD
Retailer 8HK$6,330 HKD
Retailer 10HK$6,936 HKD
Retailer 12HK$7,069 HKD
Retailer 9HK$8,175 HKD
Retailer 6HK$8,183 HKD
Retailer 5HK$8,701 HKD
Retailer 7HK$10,384 HKD
Retailer 2HK$13,495 HKD
The Diamond GuysHK$13,738 HKD
Retailer 3HK$18,041 HKD
Retailer 1HK$21,811 HKD
Retailer 11HK$21,811 HKD

62 data points across 13 retailers

2 retailersHK$10,384 HKD to HK$13,738 HKD

B+
Cheapest Retailer
-
HK$10,384 HKD
CA$1,838 CAD
Most Expensive
B
The Diamond Guys
1954434369 · Nov 1
HK$13,738 HKD
$1,751 USD
View
1 more retailer has this diamond
Prices start from HK$10,384 HKDSave up to HK$3,354 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.

B+
3.71ct Round
HK$10,384 HKD