CaratHunter
Plans
Round|Lab Grown|IGI

3.09ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG635499506

Shape and cutting style on the report: Round brilliant

Certificate IGI LG635499506

Diamond specifications and retailer prices

From $1,289 USD
As of November 5, 2026
Save $417 USD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,706 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 LG635499506 or 635499506. Listed at 2 retailers as of November 5, 2026, with prices from $1,289 to $1,706, a $417 spread on the same certified stone. The Diamond Guys lists it at $1,706. 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 angle35.6°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG635499506
Dimensions9.29 × 9.25 × 5.81 mm
L/W Ratio1.00
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
9.29 mm9.25 mm3.09 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG635499506
Side View
Table 55.0%Crown 35.6°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $341 USD|Low: $253 USD|High: $3,000 USD|Avg: $1,247 USD|+31.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
The Diamond Guys
September 18, 2026
Retailer 1$341 USD
Retailer 6$614 USD
Retailer 4$666 USD
Retailer 5$690 USD
Retailer 7$957 USD
Retailer 9$960 USD
Retailer 8$1,050 USD
Retailer 10$1,063 USD
Retailer 11$1,289 USD
The Diamond Guys$1,706 USD
Retailer 3$1,889 USD
Retailer 2$2,670 USD

74 data points across 12 retailers

2 retailers$1,289 USD to $1,706 USD

B
Cheapest Retailer
-
$1,289 USD
Most Expensive
B
The Diamond Guys
1954434406 · Nov 6
$1,706 USD
View
1 more retailer has this diamond
Prices start from $1,289 USDSave up to $417 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
$1,289 USD