CaratHunter
Plans
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 $1,473 NZD
$830 USD
As of November 1, 2026
Save $2,702 NZD (65%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $4,175 NZD at Adiamor · As of November 2, 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 November 1, 2026, with prices from $1,473 to $4,175, a $2,702 spread on the same certified stone. Adiamor lists it at $4,175. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $4,175 NZD|Low: $1,334 NZD|High: $10,522 NZD|Avg: $4,586 NZD|-2.8%
Adiamor
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 5$1,473 NZD
Retailer 2$1,785 NZD
Retailer 3$2,761 NZD
Retailer 6$3,476 NZD
Adiamor$4,175 NZD
Retailer 4$5,871 NZD
Retailer 8$6,682 NZD
Retailer 7$10,522 NZD

12 data points across 8 retailers

6 retailers$1,473 NZD to $4,175 NZD

B+
Cheapest Retailer
-
$1,473 NZD
$830 USD
A
Retailer 2
-
$1,785 NZD
€958 EUR
View
Retailer 3
-
$2,761 NZD
$1,556 USD
View
Price last confirmed 11 days ago
B+
Retailer 4
-
$2,859 NZD
£1,269 GBP
View
B
Retailer 5
-
$3,476 NZD
$1,959 USD
View
Most Expensive
B
Adiamor
D-73418191 · Nov 2
$4,175 NZD
$2,353 USD
View
5 more retailers have this diamond
Prices start from $1,473 NZDSave up to $2,702 NZD

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
$1,473 NZD