CaratHunter
Plans
Round|Lab Grown|IGI

3.77ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG644484316

Shape and cutting style on the report: Round brilliant

Certificate IGI LG644484316

Diamond specifications and retailer prices

From $1,323 USD
CA$1,837 CAD
As of October 30, 2026
Save $427 USD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,749 USD at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 3.77ct lab-grown round diamond

This 3.77ct 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 LG644484316 or 644484316. Listed at 2 retailers as of October 30, 2026, with prices from $1,323 to $1,749, a $427 spread on the same certified stone. The Diamond Guys lists it at $1,749. 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

3.77
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG644484316
Dimensions10.13 × 10.10 × 6.07 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
10.13 mm10.10 mm3.77 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG644484316
Side View
Table 59.0%Crown 34.1°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.0%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $1,104 USD|Low: $264 USD|High: $5,140 USD|Avg: $1,471 USD|-7.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
The Diamond Guys
August 3, 2026
Retailer 4$719 USD
Retailer 7$782 USD
Retailer 10$878 USD
Retailer 12$888 USD
Retailer 9$1,070 USD
Retailer 6$1,074 USD
Retailer 1$1,104 USD
Retailer 8$1,323 USD
Retailer 2$1,715 USD
The Diamond Guys$1,749 USD
Retailer 3$2,334 USD
Retailer 11$2,730 USD
Retailer 5$5,140 USD

58 data points across 13 retailers

2 retailers$1,323 USD to $1,749 USD

B+
Cheapest Retailer
-
$1,323 USD
CA$1,837 CAD
Most Expensive
B
The Diamond Guys
1954434358 · Nov 1
$1,749 USD
View
1 more retailer has this diamond
Prices start from $1,323 USDSave up to $427 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+
3.77ct Round
$1,323 USD