CaratHunter
Plans
Oval|Lab Grown|IGI

3.91ct E SI1 Oval Lab Grown Diamond

VG • E/SI1 • IGI LG662457293

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG662457293

Diamond specifications and retailer prices

From $512 USD
As of October 29, 2026
Save $5,908 USD (92%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,420 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.91ct lab-grown oval diamond

This 3.91ct lab-grown oval sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG662457293 or 662457293. Listed at 9 retailers as of October 29, 2026, with prices from $512 to $6,420, a $5,908 spread on the same certified stone. Brilliant Earth lists it at $6,420. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.91
Carat
E
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG662457293
Dimensions12.76 × 8.91 × 5.42 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.76 mm8.91 mm3.91 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG662457293
Side View
Table 63.0%Crown 34.8°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $6,420 USD|Low: $512 USD|High: $6,620 USD|Avg: $2,620 USD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 8$512 USD
Retailer 7$573 USD
Retailer 5$986 USD
Retailer 3$990 USD
Retailer 4$1,638 USD
Retailer 9$1,843 USD
Retailer 2$3,058 USD
Retailer 6$4,550 USD
Brilliant Earth$6,420 USD

21 data points across 9 retailers

9 retailers$512 USD to $6,420 USD

A
Cheapest Retailer
-
$512 USD
A
Retailer 2
-
$573 USD
View
B+
Retailer 3
-
$986 USD
View
A
Retailer 4
-
$990 USD
View
B+
Retailer 5
-
$1,638 USD
View
B
Retailer 6
-
$1,843 USD
View
B
Retailer 7
-
$3,058 USD
£2,408 GBP
View
B
Retailer 8
-
$4,550 USD
View
Most Expensive
B
Brilliant Earth
12629184Y · Oct 29
$6,420 USD
View
8 more retailers have this diamond
Prices start from $512 USDSave up to $5,908 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
3.91ct Oval
$512 USD