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Round|Lab Grown|IGI

3.09ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG680586853

Shape and cutting style on the report: Round brilliant

Certificate IGI LG680586853

Diamond specifications and retailer prices

From $342 USD
As of November 5, 2026
Save $1,433 USD (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,775 USD at Rare Carat · As of November 4, 2026
View at Rare Carat

About this 3.09ct lab-grown round diamond

This 3.09ct 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 LG680586853 or 680586853. Listed at 15 retailers as of November 4, 2026, with prices from $342 to $1,775, a $1,433 spread on the same certified stone. Rare Carat lists it at $1,775. 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

3.09
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG680586853
Dimensions9.37 × 9.43 × 5.74 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.37 mm9.43 mm3.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG680586853
Side View
Table 57.0%Crown 34.2°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.1%

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: Nov 5
Current: $1,775 USD|Low: $342 USD|High: $4,252 USD|Avg: $1,095 USD|-23.0%
Rare Carat
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
Retailer 15
Retailer 16
November 5, 2026
Retailer 12$342 USD
Retailer 7$397 USD
Retailer 6$424 USD
Retailer 16$473 USD
Retailer 2$563 USD
Retailer 13$575 USD
Retailer 14$681 USD
Retailer 4$684 USD
Retailer 15$743 USD
Retailer 10$752 USD
Retailer 3$954 USD
Retailer 11$1,244 USD
Retailer 5$1,363 USD
Retailer 9$1,695 USD
Rare Carat$1,775 USD
Retailer 8$4,252 USD

10 data points across 16 retailers

15 retailers$342 USD to $1,775 USD

A
Cheapest Retailer
-
$342 USD
A
Retailer 2
-
$397 USD
View
A
Retailer 3
-
$424 USD
View
A
Retailer 4
-
$473 USD
View
A
Retailer 5
-
$563 USD
View
A
Retailer 6
-
$575 USD
View
Retailer 7
-
$681 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$684 USD
View
A
Retailer 9
-
$743 USD
View
A
Retailer 10
-
$752 USD
View
A
Retailer 11
-
$954 USD
View
B+
Retailer 12
-
$1,244 USD
View
B+
Retailer 13
-
$1,363 USD
View
B
Retailer 14
-
$1,695 USD
View
Most Expensive
B
Rare Carat
KI8535868KF680 · Nov 4
$1,775 USD
View
14 more retailers have this diamond
Prices start from $342 USDSave up to $1,433 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
3.09ct Round
$342 USD