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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 $739 NZD
$416 USD
As of October 26, 2026
Save $5,819 NZD (89%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $10,628 NZD 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 11 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
Colour
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: $3,738 NZD|Low: $606 NZD|High: $6,718 NZD|Avg: $2,670 NZD|-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$739 NZD
Retailer 8$828 NZD
Retailer 2$848 NZD
Retailer 9$1,410 NZD
Retailer 7$1,448 NZD
Retailer 12$1,448 NZD
Retailer 5$1,737 NZD
Retailer 6$1,866 NZD
Retailer 4$1,944 NZD
Retailer 10$2,572 NZD
Retailer 11$3,254 NZD
Retailer 1$3,738 NZD
Retailer 3$6,238 NZD
Retailer 13$6,558 NZD

33 data points across 14 retailers

11 retailers$739 NZD to $6,558 NZD

A
Cheapest Retailer
-
$739 NZD
$416 USD
A
Retailer 2
-
$828 NZD
$466 USD
View
Retailer 3
-
$1,410 NZD
£624 GBP
View
Price last confirmed 9 days ago
B+
Retailer 4
-
$1,448 NZD
$815 USD
View
A
Retailer 5
-
$1,448 NZD
$815 USD
View
Retailer 6
-
$2,572 NZD
$1,447 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$3,254 NZD
$1,831 USD
View
B
Retailer 8
-
$3,738 NZD
£1,656 GBP
View
B
Retailer 9
-
$6,238 NZD
$3,510 USD
View
B
Retailer 10
-
$6,558 NZD
$3,690 USD
View
Most Expensive
Jared
150918726 · Oct 28
$10,628 NZD
$5,980 USD
View
Price under review
10 more retailers have this diamond
Prices start from $739 NZDSave up to $5,819 NZD

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
$739 NZD