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Radiant|Lab Grown|IGI

5.28ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG787623453

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

Certificate IGI LG787623453

Diamond specifications and retailer prices

From $15,559 AUD
$10,929 USD
As of October 30, 2026
Save $38,180 AUD (71%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $53,738 AUD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 5.28ct lab-grown radiant diamond

This 5.28ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG787623453 or 787623453. Listed at 11 retailers as of October 30, 2026, with prices from $15,559 to $53,738, a $38,180 spread on the same certified stone. Taylor and Hart lists it at $53,738. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.28
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.3°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787623453
Dimensions12.11 × 8.73 × 5.84 mm
L/W Ratio1.39
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
12.11 mm8.73 mm5.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787623453
Side View
Table 62.0%Crown 42.3°Girdle: Slightly ThickPavilion 35.1°Culet: NoneDepth 66.9%

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 30
Current: $30,174 AUD|Low: $15,559 AUD|High: $97,686 AUD|Avg: $34,170 AUD|-15.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Taylor and Hart
October 31, 2026
Retailer 8$15,559 AUD
Retailer 10$17,089 AUD
Retailer 11$17,418 AUD
Retailer 7$17,916 AUD
Retailer 5$21,304 AUD
Retailer 4$25,312 AUD
Retailer 3$26,677 AUD
Retailer 6$28,253 AUD
Retailer 1$30,174 AUD
Retailer 9$49,610 AUD
Taylor and Hart$53,738 AUD
Retailer 2$97,686 AUD

33 data points across 12 retailers

11 retailers$15,559 AUD to $53,738 AUD

A
Cheapest Retailer
-
$15,559 AUD
$10,929 USD
A
Retailer 2
-
$17,089 AUD
$12,004 USD
View
A
Retailer 3
-
$17,418 AUD
$12,235 USD
View
A
Retailer 4
-
$17,916 AUD
$12,585 USD
View
A
Retailer 5
-
$21,304 AUD
£11,783 GBP
View
A
Retailer 6
-
$25,312 AUD
$17,780 USD
View
A
Retailer 7
-
$28,253 AUD
£15,627 GBP
View
B+
Retailer 8
-
$30,174 AUD
€20,186 EUR
View
B
Retailer 9
-
$49,610 AUD
$34,848 USD
View
Most Expensive
B
Taylor and Hart
OLY1CTE · Oct 30
$53,738 AUD
$37,748 USD
View
9 more retailers have this diamond
Prices start from $15,559 AUDSave up to $38,180 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
5.28ct Radiant
$15,559 AUD