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Radiant|Lab Grown|IGI

5.18ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG744514803

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

Certificate IGI LG744514803

Diamond specifications and retailer prices

From $12,136 AUD
$8,525 USD
As of October 30, 2026
Save $27,058 AUD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $39,194 AUD at Frank Darling · As of October 29, 2026
View at Frank Darling

About this 5.18ct lab-grown radiant diamond

This 5.18ct 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 LG744514803 or 744514803. Listed at 15 retailers as of October 29, 2026, with prices from $12,136 to $39,194, a $27,058 spread on the same certified stone. Frank Darling lists it at $39,194. 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

5.18
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG744514803
Dimensions11.90 × 8.56 × 6.05 mm
L/W Ratio1.39
Culet sizePointed
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
11.90 mm8.56 mm5.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG744514803
Side View
Table 65.0%Crown 37.7°Girdle: ThickPavilion 37.2°Culet: NoneDepth 70.7%

Caratlytics Score

How it works →
A+
Exceptional
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: $39,194 AUD|Low: $12,136 AUD|High: $88,733 AUD|Avg: $26,344 AUD|-18.3%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 30, 2026
Retailer 10$12,136 AUD
Retailer 12$12,327 AUD
Retailer 6$12,593 AUD
Retailer 4$12,622 AUD
Retailer 15$13,951 AUD
Retailer 13$15,660 AUD
Retailer 11$16,289 AUD
Retailer 9$16,998 AUD
Retailer 3$17,476 AUD
Retailer 7$17,529 AUD
Retailer 2$24,842 AUD
Retailer 5$27,362 AUD
Retailer 8$27,886 AUD
Frank Darling$39,194 AUD
Retailer 14$75,736 AUD

39 data points across 15 retailers

15 retailers$12,136 AUD to $39,194 AUD

A+
Cheapest Retailer
-
$12,136 AUD
$8,525 USD
A
Retailer 2
-
$12,327 AUD
$8,659 USD
View
A
Retailer 3
-
$12,593 AUD
$8,846 USD
View
A
Retailer 4
-
$12,622 AUD
$8,866 USD
View
A
Retailer 5
-
$13,951 AUD
$9,800 USD
View
A
Retailer 6
-
$15,660 AUD
$11,000 USD
View
A
Retailer 7
-
$16,289 AUD
$11,442 USD
View
A
Retailer 8
-
$16,998 AUD
$11,940 USD
View
A
Retailer 9
-
$17,476 AUD
$12,276 USD
View
A
Retailer 10
-
$17,529 AUD
$12,313 USD
View
Final sale: no returns
A
Retailer 11
-
$24,842 AUD
$17,450 USD
View
Retailer 12
-
$27,362 AUD
€18,305 EUR
View
Price last confirmed 7 days ago
B+
Retailer 13
-
$27,886 AUD
£15,424 GBP
View
Most Expensive
B+
Frank Darling
P80I-50EL · Oct 29
$39,194 AUD
$27,532 USD
View
13 more retailers have this diamond
Prices start from $12,136 AUDSave up to $27,058 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+
5.18ct Radiant
$12,136 AUD