Round|Lab Grown|IGI

3.71ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG628436131

Shape and cutting style on the report: Round brilliant

Certificate IGI LG628436131

Diamond specifications and retailer prices

From $416 USD
As of October 26, 2026
Save $3,274 USD (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,980 USD at Jared · As of October 28, 2026
View at Jared

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 LG628436131 or 628436131. Listed at 12 retailers as of October 26, 2026, with a 787% 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

3.71
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628436131
Dimensions9.93 × 9.97 × 5.99 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
9.93 mm9.97 mm3.71 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628436131
Side View
Table 58.0%Crown 32.7°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.2%

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: Oct 26
Current: $2,103 USD|Low: $341 USD|High: $3,780 USD|Avg: $1,502 USD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 29, 2026
Retailer 14$416 USD
Retailer 8$466 USD
Retailer 2$477 USD
Retailer 9$793 USD
Retailer 7$815 USD
Retailer 12$815 USD
Retailer 5$977 USD
Retailer 6$1,050 USD
Retailer 4$1,094 USD
Retailer 10$1,447 USD
Retailer 11$1,831 USD
Retailer 1$2,103 USD
Retailer 3$3,510 USD
Retailer 13$3,690 USD

33 data points across 14 retailers

12 retailers$416 USD to $3,690 USD

A
Cheapest Retailer
-
$416 USD
A
Retailer 2
-
$466 USD
View
A
Retailer 3
-
$477 USD
View
Final sale: no returns
Retailer 4
-
$793 USD
£624 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$815 USD
View
A
Retailer 6
-
$815 USD
View
B+
Retailer 7
-
$1,447 USD
View
B+
Retailer 8
-
$1,831 USD
View
B
Retailer 9
-
$2,103 USD
£1,656 GBP
View
B
Retailer 10
-
$3,510 USD
View
B
Retailer 11
-
$3,690 USD
View
Most Expensive
Jared
150918726 · Oct 28
$5,980 USD
View
Price under review
11 more retailers have this diamond
Prices start from $416 USDSave up to $3,274 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
3.71ct Round
$416 USD