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Round|Lab Grown|IGI

3.09ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG629470448

Shape and cutting style on the report: Round brilliant

Certificate IGI LG629470448

Diamond specifications and retailer prices

From $1,251 USD
As of November 5, 2026
Save $405 USD (24%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,656 USD at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 3.09ct lab-grown round diamond

This 3.09ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG629470448 or 629470448. Listed at 3 retailers as of November 5, 2026, with prices from $1,251 to $1,656, a $405 spread on the same certified stone. The Diamond Guys lists it at $1,656. 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
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG629470448
Dimensions9.26 × 9.19 × 5.84 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.26 mm9.19 mm3.09 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG629470448
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 63.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: $336 USD|Low: $250 USD|High: $4,210 USD|Avg: $1,475 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 15
The Diamond Guys
September 18, 2026
Retailer 1$336 USD
Retailer 13$385 USD
Retailer 8$390 USD
Retailer 11$541 USD
Retailer 12$610 USD
Retailer 9$660 USD
Retailer 10$687 USD
Retailer 15$955 USD
Retailer 14$956 USD
Retailer 2$1,040 USD
Retailer 3$1,055 USD
Retailer 4$1,251 USD
The Diamond Guys$1,656 USD
Retailer 6$1,889 USD
Retailer 5$2,640 USD
Retailer 7$4,210 USD

65 data points across 16 retailers

3 retailers$1,251 USD to $1,656 USD

Retailer 1
-
$385 USD
Price last confirmed 51 days ago
B+
Retailer 2
-
$1,251 USD
View
Most Expensive
B
The Diamond Guys
1954434405 · Nov 6
$1,656 USD
View
2 more retailers have this diamond
Prices start from $1,251 USDSave up to $405 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.

B+
3.09ct Round
$1,251 USD