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Round|Lab Grown|IGI

3.10ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG627405088

Shape and cutting style on the report: Round brilliant

Certificate IGI LG627405088

Diamond specifications and retailer prices

From $1,237 USD
As of November 5, 2026
Save $400 USD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,637 USD at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 3.1ct lab-grown round diamond

This 3.1ct 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 LG627405088 or 627405088. Listed at 2 retailers as of November 5, 2026, with prices from $1,237 to $1,637, a $400 spread on the same certified stone. The Diamond Guys lists it at $1,637. 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

3.10
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG627405088
Dimensions9.36 × 9.28 × 5.75 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
9.36 mm9.28 mm3.10 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG627405088
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $641 USD|Low: $244 USD|High: $2,970 USD|Avg: $1,321 USD|-24.6%
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
The Diamond Guys
August 19, 2026
Retailer 10$252 USD
Retailer 8$540 USD
Retailer 1$641 USD
Retailer 5$663 USD
Retailer 13$829 USD
Retailer 9$958 USD
Retailer 6$960 USD
Retailer 11$1,041 USD
Retailer 7$1,066 USD
Retailer 12$1,237 USD
The Diamond Guys$1,637 USD
Retailer 3$1,925 USD
Retailer 2$2,610 USD
Retailer 4$2,870 USD

68 data points across 14 retailers

2 retailers$1,237 USD to $1,637 USD

B+
Cheapest Retailer
-
$1,237 USD
Most Expensive
B
The Diamond Guys
1954434397 · Nov 6
$1,637 USD
View
1 more retailer has this diamond
Prices start from $1,237 USDSave up to $400 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+
3.10ct Round
$1,237 USD