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Radiant|Lab Grown|IGI

4.97ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG648427380

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG648427380

Diamond specifications and retailer prices

From $1,798 CAD
$1,287 USD
As of October 29, 2026
Save $4,089 CAD (69%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $5,887 CAD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 4.97ct lab-grown radiant diamond

This 4.97ct lab-grown radiant sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG648427380 or 648427380. Listed at 5 retailers as of October 29, 2026, with prices from $1,798 to $5,887, a $4,089 spread on the same certified stone. Diamond Quarter lists it at $5,887. 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

4.97
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle28.5°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG648427380
Dimensions12.06 × 8.48 × 5.59 mm
L/W Ratio1.42
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.06 mm8.48 mm4.97 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG648427380
Side View
Table 65.0%Crown 28.5°Girdle: Slightly ThickPavilion 34.3°Culet: NoneDepth 65.9%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: $3,450 CAD|Low: $1,798 CAD|High: $163,151 CAD|Avg: $28,756 CAD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 14, 2026
Retailer 2$1,798 CAD
Retailer 4$2,231 CAD
Retailer 1$3,450 CAD
Retailer 5$4,110 CAD
Retailer 3$4,277 CAD
Retailer 7$9,625 CAD
Retailer 6$163,151 CAD

2 data points across 7 retailers

5 retailers$1,798 CAD to $5,887 CAD

A
Cheapest Retailer
-
$1,798 CAD
$1,287 USD
B+
Retailer 2
-
$2,231 CAD
$1,597 USD
View
B
Retailer 3
-
$4,110 CAD
$2,942 USD
View
B
Retailer 4
-
$4,277 CAD
$3,062 USD
View
Most Expensive
B
Diamond Quarter
4.97SI1GLG802FB4N · Oct 29
$5,887 CAD
£3,318 GBP
View
4 more retailers have this diamond
Prices start from $1,798 CADSave up to $4,089 CAD

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
4.97ct Radiant
$1,798 CAD