Radiant|Lab Grown|IGI

4.50ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG613377657

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

Certificate IGI LG613377657

Diamond specifications and retailer prices

From $1,006 USD
€958 EUR
As of October 31, 2026
Save $953 USD (49%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $2,353 USD at Adiamor · As of October 21, 2026
View at Adiamor

About this 4.5ct lab-grown radiant diamond

This 4.5ct 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 LG613377657 or 613377657. Listed at 6 retailers as of October 31, 2026, with a 95% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.50
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG613377657
Dimensions11.97 × 8.12 × 5.35 mm
L/W Ratio1.47
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
11.97 mm8.12 mm4.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG613377657
Side View
Table 64.0%Crown 46°Girdle: MediumPavilion 34.2°Culet: NoneDepth 65.9%

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: Oct 31
Current: $2,353 USD|Low: $752 USD|High: $5,930 USD|Avg: $2,585 USD|-2.8%
Adiamor
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 5$830 USD
Retailer 2$1,006 USD
Retailer 3$1,556 USD
Retailer 6$1,959 USD
Adiamor$2,353 USD
Retailer 4$3,309 USD
Retailer 8$3,766 USD
Retailer 7$5,930 USD

12 data points across 8 retailers

6 retailers$1,006 USD to $1,959 USD

Retailer 1
-
$830 USD
Price last confirmed 10 days ago
A
Retailer 2
-
$1,006 USD
€958 EUR
View
Retailer 3
-
$1,556 USD
View
Price last confirmed 9 days ago
B+
Retailer 4
-
$1,611 USD
£1,269 GBP
View
B
Retailer 5
-
$1,959 USD
View
Most Expensive
Adiamor
D-73418191 · Oct 21
$2,353 USD
View
Price last confirmed 9 days ago
5 more retailers have this diamond
Prices start from $1,006 USDSave up to $953 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
4.50ct Radiant
$1,006 USD