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Round|Lab Grown|IGI

3.77ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG843627448

Shape and cutting style on the report: Round brilliant

Certificate IGI LG843627448

Diamond specifications and retailer prices

From $509 SGD
$398 USD
As of October 29, 2026
Save $1,972 SGD (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,621 SGD at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 3.77ct lab-grown round diamond

This 3.77ct lab-grown round 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 LG843627448 or 843627448. Listed at 10 retailers as of October 29, 2026, with a 388% 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

3.77
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843627448
Dimensions10.11 × 10.15 × 6.02 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.11 mm10.15 mm3.77 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843627448
Side View
Table 62.0%Crown 32.1°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 59.4%

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: $2,621 SGD|Low: $509 SGD|High: $2,621 SGD|Avg: $1,429 SGD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 8$509 SGD
Retailer 6$570 SGD
Retailer 2$846 SGD
Retailer 3$1,011 SGD
Retailer 10$1,153 SGD
Retailer 7$1,772 SGD
Retailer 5$1,777 SGD
Retailer 9$2,030 SGD
Retailer 4$2,481 SGD
Rare Carat$2,621 SGD

14 data points across 10 retailers

10 retailers$509 SGD to $2,481 SGD

A
Cheapest Retailer
-
$509 SGD
$398 USD
A
Retailer 2
-
$570 SGD
$446 USD
View
A
Retailer 3
-
$846 SGD
£521 GBP
View
A
Retailer 4
-
$1,011 SGD
€753 EUR
View
A
Retailer 5
-
$1,153 SGD
$902 USD
View
B+
Retailer 6
-
$1,772 SGD
$1,386 USD
View
B+
Retailer 7
-
$1,777 SGD
$1,390 USD
View
B+
Retailer 8
-
$2,030 SGD
$1,588 USD
View
B+
Retailer 9
-
$2,481 SGD
£1,528 GBP
View
Most Expensive
Rare Carat
LGRD30-167316 · Oct 21
$2,621 SGD
$2,050 USD
View
Price last confirmed 9 days ago
9 more retailers have this diamond
Prices start from $509 SGDSave up to $1,972 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
3.77ct Round
$509 SGD