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Round|Lab Grown|IGI

3.51ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG819620033

Shape and cutting style on the report: Round brilliant

Certificate IGI LG819620033

Diamond specifications and retailer prices

From $476 SGD
$372 USD
As of November 1, 2026
Save $2,645 SGD (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,121 SGD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 3.51ct lab-grown round diamond

This 3.51ct 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 LG819620033 or 819620033. Listed at 11 retailers as of November 1, 2026, with prices from $476 to $3,121, a $2,645 spread on the same certified stone. Brilliant Earth lists it at $3,121. 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

3.51
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG819620033
Dimensions9.82 × 9.89 × 5.83 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.82 mm9.89 mm3.51 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG819620033
Side View
Table 61.0%Crown 32.2°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 59.2%

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: Nov 1
Current: $3,121 SGD|Low: $471 SGD|High: $5,845 SGD|Avg: $1,837 SGD|-46.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 3$476 SGD
Retailer 8$552 SGD
Retailer 6$826 SGD
Retailer 2$949 SGD
Retailer 9$1,113 SGD
Retailer 7$1,732 SGD
Retailer 5$1,733 SGD
Retailer 10$1,898 SGD
Retailer 4$2,311 SGD
Retailer 11$2,394 SGD
Brilliant Earth$3,121 SGD

30 data points across 11 retailers

11 retailers$476 SGD to $3,121 SGD

A
Cheapest Retailer
-
$476 SGD
$372 USD
A
Retailer 2
-
$552 SGD
$432 USD
View
Retailer 3
-
$826 SGD
£509 GBP
View
Price last confirmed 16 days ago
A
Retailer 4
-
$949 SGD
€707 EUR
View
A
Retailer 5
-
$1,113 SGD
$870 USD
View
B+
Retailer 6
-
$1,732 SGD
$1,354 USD
View
B+
Retailer 7
-
$1,733 SGD
$1,355 USD
View
B+
Retailer 8
-
$1,898 SGD
$1,484 USD
View
B+
Retailer 9
-
$2,311 SGD
£1,423 GBP
View
Retailer 10
-
$2,394 SGD
View
Price last confirmed 20 days ago
Most Expensive
B
Brilliant Earth
20802674A · Nov 2
$3,121 SGD
$2,440 USD
View
10 more retailers have this diamond
Prices start from $476 SGDSave up to $2,645 SGD

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
3.51ct Round
$476 SGD