Round|Lab Grown|IGI

3.10ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG666443721

Shape and cutting style on the report: Round brilliant

Certificate IGI LG666443721

Diamond specifications and retailer prices

From $366 USD
As of November 5, 2026
Save $1,819 USD (83%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,185 USD at Rare Carat · As of November 4, 2026
View at Rare Carat

About this 3.1ct lab-grown round diamond

This 3.1ct 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 LG666443721 or 666443721. Listed at 15 retailers as of November 4, 2026, with prices from $366 to $2,185, a $1,819 spread on the same certified stone. Rare Carat lists it at $2,185. 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
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG666443721
Dimensions9.37 × 9.40 × 5.77 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
9.37 mm9.40 mm3.10 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG666443721
Side View
Table 56.0%Crown 34.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $2,185 USD|Low: $366 USD|High: $4,574 USD|Avg: $1,332 USD|-11.8%
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 5, 2026
Retailer 13$366 USD
Retailer 7$425 USD
Retailer 6$454 USD
Retailer 17$499 USD
Retailer 2$602 USD
Retailer 14$605 USD
Retailer 15$724 USD
Retailer 4$726 USD
Retailer 16$771 USD
Retailer 11$809 USD
Retailer 3$1,124 USD
Retailer 12$1,332 USD
Retailer 5$1,460 USD
Retailer 10$1,769 USD
Rare Carat$2,185 USD
Retailer 9$3,540 USD
Retailer 8$4,574 USD

10 data points across 17 retailers

15 retailers$366 USD to $2,185 USD

A
Cheapest Retailer
-
$366 USD
A
Retailer 2
-
$425 USD
View
A
Retailer 3
-
$454 USD
View
A
Retailer 4
-
$499 USD
View
A
Retailer 5
-
$602 USD
View
A
Retailer 6
-
$605 USD
View
Retailer 7
-
$724 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$726 USD
View
A
Retailer 9
-
$771 USD
View
A
Retailer 10
-
$809 USD
View
B+
Retailer 11
-
$1,124 USD
View
B+
Retailer 12
-
$1,332 USD
View
B
Retailer 13
-
$1,460 USD
View
B
Retailer 14
-
$1,769 USD
View
Most Expensive
B
Rare Carat
KI7214437KF666 · Nov 4
$2,185 USD
View
14 more retailers have this diamond
Prices start from $366 USDSave up to $1,819 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
3.10ct Round
$366 USD