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 $5,980 USD
As of October 27, 2026
Save $20,459 USD (77%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $26,439 USD 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 $5,980 to $26,439, a $20,459 spread on the same certified stone. With Clarity lists it at $26,439. 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
Color
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: $14,093 USD|Low: $5,980 USD|High: $26,439 USD|Avg: $11,274 USD|+1.1%
Retailer 1
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Retailer 20
With Clarity
October 29, 2026
Retailer 19$5,980 USD
Retailer 6$6,267 USD
Retailer 2$6,356 USD
Retailer 13$6,917 USD
Retailer 5$6,930 USD
Retailer 10$6,937 USD
Retailer 15$7,181 USD
Retailer 9$8,235 USD
Retailer 18$8,393 USD
Retailer 12$8,689 USD
Retailer 8$9,876 USD
Retailer 20$10,218 USD
Retailer 3$10,706 USD
Retailer 16$10,725 USD
Retailer 17$11,390 USD
Retailer 7$13,127 USD
Retailer 1$14,093 USD
Retailer 14$14,191 USD
Retailer 4$19,299 USD
Retailer 11$24,219 USD
With Clarity$26,439 USD

11 data points across 21 retailers

21 retailers$5,980 USD to $26,439 USD

A
Cheapest Retailer
-
$5,980 USD
A
Retailer 2
-
$6,267 USD
View
A
Retailer 3
-
$6,356 USD
View
A
Retailer 4
-
$6,917 USD
View
Final sale: no returns
A
Retailer 5
-
$6,930 USD
View
A
Retailer 6
-
$6,937 USD
View
A
Retailer 7
-
$7,181 USD
£5,654 GBP
View
A
Retailer 8
-
$8,235 USD
View
A
Retailer 9
-
$8,393 USD
View
A
Retailer 10
-
$8,689 USD
£6,842 GBP
View
A
Retailer 11
-
$9,876 USD
£7,776 GBP
View
A
Retailer 12
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$10,218 USD
View
A
Retailer 13
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$10,706 USD
View
A
Retailer 14
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$10,725 USD
View
A
Retailer 15
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$11,390 USD
€10,848 EUR
View
A
Retailer 16
-
$13,127 USD
View
A
Retailer 17
-
$14,093 USD
ZAR 227,670 ZAR
View
A
Retailer 18
-
$14,191 USD
£11,174 GBP
View
B+
Retailer 19
-
$19,299 USD
View
B+
Retailer 20
-
$24,219 USD
View
Most Expensive
B+
With Clarity
818640333 · Oct 30
$26,439 USD
View
20 more retailers have this diamond
Prices start from $5,980 USDSave up to $20,459 USD

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
$5,980 USD