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Marquise|Lab Grown|IGI

3.10ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG841603280

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG841603280

Diamond specifications and retailer prices

From $497 SGD
$389 USD
As of October 29, 2026
Save $3,696 SGD (88%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $4,193 SGD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.1ct lab-grown marquise diamond

This 3.1ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG841603280 or 841603280. Listed at 4 retailers as of October 29, 2026, with prices from $497 to $4,193, a $3,696 spread on the same certified stone. Brilliant Earth lists it at $4,193. 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

3.10
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841603280
Dimensions14.38 × 7.66 × 4.94 mm
L/W Ratio1.88
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.38 mm7.66 mm3.10 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841603280
Side View
Table 59.0%Crown 36.7°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 64.5%

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 29
Current: $4,193 SGD|Low: $497 SGD|High: $5,983 SGD|Avg: $2,884 SGD|-29.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 3$497 SGD
Retailer 2$1,023 SGD
Retailer 4$3,554 SGD
Brilliant Earth$4,193 SGD

26 data points across 4 retailers

4 retailers$497 SGD to $4,193 SGD

A
Cheapest Retailer
-
$497 SGD
$389 USD
Final sale: no returns
A
Retailer 2
-
$1,023 SGD
£630 GBP
View
Retailer 3
-
$3,554 SGD
$2,780 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21612819A · Oct 30
$4,193 SGD
$3,280 USD
View
3 more retailers have this diamond
Prices start from $497 SGDSave up to $3,696 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
3.10ct Marquise
$497 SGD