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Radiant|Lab Grown|IGI

5.20ct F SI1 Radiant Lab Grown Diamond

EX • F/SI1 • IGI LG621479819

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

Certificate IGI LG621479819

Diamond specifications and retailer prices

From $1,598 AUD
$1,120 USD
As of November 2, 2026
Save $3,282 AUD (67%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $4,880 AUD at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 5.2ct lab-grown radiant diamond

This 5.2ct lab-grown radiant sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG621479819 or 621479819. Listed at 7 retailers as of November 1, 2026, with prices from $1,598 to $4,880, a $3,282 spread on the same certified stone. Rare Carat lists it at $4,880. 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

5.20
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle33.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621479819
Dimensions12.82 × 8.54 × 5.51 mm
L/W Ratio1.50
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
12.82 mm8.54 mm5.20 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621479819
Side View
Table 66.0%Crown 42.8°Girdle: THN-MEDPavilion 33.2°Culet: NoneDepth 64.5%

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 2
Current: $1,709 AUD|Low: $1,538 AUD|High: $4,800 AUD|Avg: $2,502 AUD|+2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 4$1,598 AUD
Retailer 3$1,671 AUD
Retailer 1$1,709 AUD
Retailer 5$1,982 AUD
Retailer 6$3,526 AUD
Retailer 2$4,737 AUD

40 data points across 6 retailers

7 retailers$1,598 AUD to $4,880 AUD

A
Cheapest Retailer
-
$1,598 AUD
$1,120 USD
B+
Retailer 2
-
$1,671 AUD
$1,171 USD
View
A
Retailer 3
-
$1,709 AUD
£943 GBP
View
B+
Retailer 4
-
$1,982 AUD
$1,389 USD
View
B
Retailer 5
-
$3,526 AUD
$2,471 USD
View
B
Retailer 6
-
$4,737 AUD
£2,614 GBP
View
Most Expensive
B
Rare Carat
DB-111-17_l_621479819 · Nov 1
$4,880 AUD
$3,420 USD
View
6 more retailers have this diamond
Prices start from $1,598 AUDSave up to $3,282 AUD

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
5.20ct Radiant
$1,598 AUD