Round|Lab Grown|IGI

3.09ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG700584426

Shape and cutting style on the report: Round brilliant

Certificate IGI LG700584426

Diamond specifications and retailer prices

From $365 USD
As of November 5, 2026
Save $1,640 USD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,005 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG700584426 or 700584426. Listed at 15 retailers as of November 4, 2026, with prices from $365 to $2,005, a $1,640 spread on the same certified stone. Rare Carat lists it at $2,005. 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
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG700584426
Dimensions9.38 × 9.42 × 5.76 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.38 mm9.42 mm3.09 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG700584426
Side View
Table 57.0%Crown 34.5°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: $2,005 USD|Low: $365 USD|High: $5,300 USD|Avg: $1,433 USD|-27.5%
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
Retailer 17
November 6, 2026
Retailer 13$365 USD
Retailer 7$424 USD
Retailer 6$453 USD
Retailer 17$499 USD
Retailer 10$601 USD
Retailer 14$605 USD
Retailer 15$722 USD
Retailer 4$724 USD
Retailer 16$769 USD
Retailer 2$806 USD
Retailer 3$1,117 USD
Retailer 12$1,328 USD
Retailer 5$1,455 USD
Retailer 11$1,769 USD
Rare Carat$2,005 USD
Retailer 8$4,559 USD
Retailer 9$5,300 USD

11 data points across 17 retailers

15 retailers$365 USD to $2,005 USD

A
Cheapest Retailer
-
$365 USD
A
Retailer 2
-
$424 USD
View
A
Retailer 3
-
$453 USD
View
A
Retailer 4
-
$499 USD
View
A
Retailer 5
-
$601 USD
View
A
Retailer 6
-
$605 USD
View
Retailer 7
-
$722 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$724 USD
View
A
Retailer 9
-
$769 USD
View
A
Retailer 10
-
$806 USD
View
B+
Retailer 11
-
$1,117 USD
View
B+
Retailer 12
-
$1,328 USD
View
B
Retailer 13
-
$1,455 USD
View
B
Retailer 14
-
$1,769 USD
View
Most Expensive
B
Rare Carat
KI4265844KF700 · Nov 4
$2,005 USD
View
14 more retailers have this diamond
Prices start from $365 USDSave up to $1,640 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
$365 USD