Radiant|Lab Grown|IGI

5.08ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG780665290

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

Certificate IGI LG780665290

Diamond specifications and retailer prices

From $8,364 USD
As of October 30, 2026
Save $19,686 USD (70%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $28,050 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 5.08ct lab-grown radiant diamond

This 5.08ct 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 LG780665290 or 780665290. Listed at 15 retailers as of October 29, 2026, with prices from $8,364 to $28,050, a $19,686 spread on the same certified stone. Brilliant Earth lists it at $28,050. 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

5.08
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.2°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780665290
Dimensions11.92 × 8.55 × 5.71 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
11.92 mm8.55 mm5.08 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780665290
Side View
Table 59.0%Crown 38.2°Girdle: ThickPavilion 33.1°Culet: NoneDepth 66.8%

Caratlytics Score

How it works →
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 30
Current: $28,050 USD|Low: $8,364 USD|High: $61,150 USD|Avg: $18,295 USD|-3.0%
Brilliant Earth
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 29, 2026
Retailer 9$8,364 USD
Retailer 11$8,498 USD
Retailer 6$8,676 USD
Retailer 3$8,699 USD
Retailer 14$9,620 USD
Retailer 12$10,793 USD
Retailer 10$11,227 USD
Retailer 8$11,535 USD
Retailer 15$12,045 USD
Retailer 7$12,080 USD
Retailer 5$18,849 USD
Retailer 2$19,219 USD
Retailer 4$27,006 USD
Brilliant Earth$28,050 USD
Retailer 13$52,190 USD

38 data points across 15 retailers

15 retailers$8,364 USD to $28,050 USD

A
Cheapest Retailer
-
$8,364 USD
A
Retailer 2
-
$8,498 USD
View
A
Retailer 3
-
$8,676 USD
View
A
Retailer 4
-
$8,699 USD
View
A
Retailer 5
-
$9,620 USD
View
A
Retailer 6
-
$10,793 USD
View
A
Retailer 7
-
$11,227 USD
View
A
Retailer 8
-
$11,535 USD
View
A
Retailer 9
-
$12,045 USD
View
A
Retailer 10
-
$12,080 USD
View
Final sale: no returns
B+
Retailer 11
-
$18,849 USD
€17,951 EUR
View
B+
Retailer 12
-
$19,219 USD
£15,133 GBP
View
B+
Retailer 13
-
$27,006 USD
View
Most Expensive
B
Brilliant Earth
18494855Y · Oct 29
$28,050 USD
View
13 more retailers have this diamond
Prices start from $8,364 USDSave up to $19,686 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
5.08ct Radiant
$8,364 USD