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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 $1,650 SGD
$1,287 USD
As of October 29, 2026
Save $3,753 SGD (69%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $5,403 SGD at Diamond Quarter · As of October 28, 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 28, 2026, with prices from $1,650 to $5,403, a $3,753 spread on the same certified stone. Diamond Quarter lists it at $5,403. 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
Colour
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: $3,167 SGD|Low: $1,650 SGD|High: $149,743 SGD|Avg: $26,393 SGD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 14, 2026
Retailer 2$1,650 SGD
Retailer 4$2,048 SGD
Retailer 1$3,167 SGD
Retailer 5$3,772 SGD
Retailer 3$3,925 SGD
Retailer 7$8,834 SGD
Retailer 6$149,743 SGD

2 data points across 7 retailers

5 retailers$1,650 SGD to $5,403 SGD

A
Cheapest Retailer
-
$1,650 SGD
$1,287 USD
B+
Retailer 2
-
$2,048 SGD
$1,597 USD
View
B
Retailer 3
-
$3,772 SGD
$2,942 USD
View
B
Retailer 4
-
$3,925 SGD
$3,062 USD
View
Most Expensive
B
Diamond Quarter
4.97SI1GLG802FB4N · Oct 28
$5,403 SGD
£3,318 GBP
View
4 more retailers have this diamond
Prices start from $1,650 SGDSave up to $3,753 SGD

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
$1,650 SGD