Radiant|Lab Grown|IGI

5.29ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG780666057

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

Certificate IGI LG780666057

Diamond specifications and retailer prices

From $8,702 USD
As of October 30, 2026
Save $19,408 USD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $28,110 USD at Frank Darling · As of October 31, 2026
View at Frank Darling

About this 5.29ct lab-grown radiant diamond

This 5.29ct 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 LG780666057 or 780666057. Listed at 15 retailers as of October 30, 2026, with prices from $8,702 to $28,110, a $19,408 spread on the same certified stone. Frank Darling lists it at $28,110. 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

5.29
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.3°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780666057
Dimensions12.20 × 8.71 × 5.70 mm
L/W Ratio1.40
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
12.20 mm8.71 mm5.29 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780666057
Side View
Table 64.0%Crown 42.3°Girdle: ThickPavilion 34.6°Culet: NoneDepth 65.4%

Caratlytics Score

How it works →
A+
Exceptional
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 30
Current: $28,110 USD|Low: $8,702 USD|High: $60,810 USD|Avg: $17,879 USD|-18.3%
Frank Darling
Retailer 2
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Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 31, 2026
Retailer 11$8,702 USD
Retailer 6$8,778 USD
Retailer 13$8,837 USD
Retailer 5$9,050 USD
Retailer 3$10,000 USD
Retailer 14$11,229 USD
Retailer 12$11,678 USD
Retailer 10$12,065 USD
Retailer 4$12,531 USD
Retailer 7$12,570 USD
Retailer 8$17,820 USD
Retailer 2$19,677 USD
Retailer 9$19,995 USD
Frank Darling$28,110 USD
Retailer 15$54,300 USD

41 data points across 15 retailers

15 retailers$8,702 USD to $28,110 USD

A+
Cheapest Retailer
-
$8,702 USD
A+
Retailer 2
-
$8,778 USD
View
A
Retailer 3
-
$8,837 USD
View
A
Retailer 4
-
$9,050 USD
View
A
Retailer 5
-
$10,000 USD
View
A
Retailer 6
-
$11,229 USD
View
A
Retailer 7
-
$11,678 USD
View
A
Retailer 8
-
$12,065 USD
View
A
Retailer 9
-
$12,531 USD
View
A
Retailer 10
-
$12,570 USD
View
Final sale: no returns
A
Retailer 11
-
$17,820 USD
View
B+
Retailer 12
-
$19,677 USD
€18,740 EUR
View
B+
Retailer 13
-
$19,995 USD
£15,744 GBP
View
Most Expensive
B+
Frank Darling
P83G-5EL · Oct 31
$28,110 USD
View
13 more retailers have this diamond
Prices start from $8,702 USDSave up to $19,408 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+
5.29ct Radiant
$8,702 USD