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Radiant|Lab Grown|IGI

5.25ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG818640333

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

Certificate IGI LG818640333

Diamond specifications and retailer prices

From $8,513 AUD
$5,980 USD
As of October 27, 2026
Save $29,125 AUD (77%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $37,639 AUD at With Clarity · As of October 30, 2026
View at With Clarity

About this 5.25ct lab-grown radiant diamond

This 5.25ct 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 LG818640333 or 818640333. Listed at 21 retailers as of October 27, 2026, with prices from $8,513 to $37,639, a $29,125 spread on the same certified stone. With Clarity lists it at $37,639. 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

5.25
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.9°
Pavilion angle32.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818640333
Dimensions12.20 × 8.86 × 5.65 mm
L/W Ratio1.38
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
12.20 mm8.86 mm5.25 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818640333
Side View
Table 60.0%Crown 39.9°Girdle: Slightly ThickPavilion 32.6°Culet: NoneDepth 63.8%

Caratlytics Score

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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 27
Current: $20,062 AUD|Low: $8,513 AUD|High: $37,639 AUD|Avg: $16,049 AUD|+1.1%
Retailer 1
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
With Clarity
October 29, 2026
Retailer 19$8,513 AUD
Retailer 6$8,922 AUD
Retailer 2$9,048 AUD
Retailer 13$9,847 AUD
Retailer 5$9,866 AUD
Retailer 10$9,876 AUD
Retailer 15$10,223 AUD
Retailer 9$11,723 AUD
Retailer 18$11,948 AUD
Retailer 12$12,370 AUD
Retailer 8$14,059 AUD
Retailer 20$14,546 AUD
Retailer 3$15,241 AUD
Retailer 16$15,268 AUD
Retailer 17$16,215 AUD
Retailer 7$18,688 AUD
Retailer 1$20,062 AUD
Retailer 14$20,202 AUD
Retailer 4$27,474 AUD
Retailer 11$34,478 AUD
With Clarity$37,639 AUD

11 data points across 21 retailers

21 retailers$8,513 AUD to $37,639 AUD

A
Cheapest Retailer
-
$8,513 AUD
$5,980 USD
A
Retailer 2
-
$8,922 AUD
$6,267 USD
View
A
Retailer 3
-
$9,048 AUD
$6,356 USD
View
A
Retailer 4
-
$9,847 AUD
$6,917 USD
View
Final sale: no returns
A
Retailer 5
-
$9,866 AUD
$6,930 USD
View
A
Retailer 6
-
$9,876 AUD
$6,937 USD
View
A
Retailer 7
-
$10,223 AUD
£5,654 GBP
View
A
Retailer 8
-
$11,723 AUD
$8,235 USD
View
A
Retailer 9
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$11,948 AUD
$8,393 USD
View
A
Retailer 10
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$12,370 AUD
£6,842 GBP
View
A
Retailer 11
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$14,059 AUD
£7,776 GBP
View
A
Retailer 12
-
$14,546 AUD
$10,218 USD
View
A
Retailer 13
-
$15,241 AUD
$10,706 USD
View
A
Retailer 14
-
$15,268 AUD
$10,725 USD
View
Retailer 15
-
$16,215 AUD
€10,848 EUR
View
Price last confirmed 7 days ago
A
Retailer 16
-
$18,688 AUD
$13,127 USD
View
A
Retailer 17
-
$20,062 AUD
ZAR 227,670 ZAR
View
A
Retailer 18
-
$20,202 AUD
£11,174 GBP
View
B+
Retailer 19
-
$27,474 AUD
$19,299 USD
View
B+
Retailer 20
-
$34,478 AUD
$24,219 USD
View
Most Expensive
B+
With Clarity
818640333 · Oct 30
$37,639 AUD
$26,439 USD
View
20 more retailers have this diamond
Prices start from $8,513 AUDSave up to $29,125 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
5.25ct Radiant
$8,513 AUD