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Radiant|Lab Grown|IGI

5.28ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG787623453

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

Certificate IGI LG787623453

Diamond specifications and retailer prices

From $10,929 USD
As of October 29, 2026
Save $26,819 USD (71%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $37,748 USD at Taylor and Hart · As of October 28, 2026
View at Taylor and Hart

About this 5.28ct lab-grown radiant diamond

This 5.28ct 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 LG787623453 or 787623453. Listed at 11 retailers as of October 28, 2026, with prices from $10,929 to $37,748, a $26,819 spread on the same certified stone. Taylor and Hart lists it at $37,748. 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

5.28
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.3°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787623453
Dimensions12.11 × 8.73 × 5.84 mm
L/W Ratio1.39
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
12.11 mm8.73 mm5.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787623453
Side View
Table 62.0%Crown 42.3°Girdle: Slightly ThickPavilion 35.1°Culet: NoneDepth 66.9%

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 29
Current: $19,846 USD|Low: $10,929 USD|High: $68,619 USD|Avg: $24,039 USD|-13.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Taylor and Hart
October 29, 2026
Retailer 7$10,929 USD
Retailer 9$12,004 USD
Retailer 10$12,235 USD
Retailer 6$12,585 USD
Retailer 4$14,875 USD
Retailer 3$18,739 USD
Retailer 1$19,846 USD
Retailer 5$21,142 USD
Retailer 2$29,150 USD
Retailer 8$34,848 USD
Taylor and Hart$37,748 USD
Retailer 11$68,619 USD

31 data points across 12 retailers

11 retailers$10,929 USD to $37,748 USD

A
Cheapest Retailer
-
$10,929 USD
A
Retailer 2
-
$12,004 USD
View
A
Retailer 3
-
$12,235 USD
View
A
Retailer 4
-
$12,585 USD
View
A
Retailer 5
-
$14,875 USD
£11,712 GBP
View
B+
Retailer 6
-
$19,846 USD
£15,627 GBP
View
B+
Retailer 7
-
$21,142 USD
€20,135 EUR
View
B+
Retailer 8
-
$29,150 USD
View
B
Retailer 9
-
$34,848 USD
View
Most Expensive
B
Taylor and Hart
OLY1CTE · Oct 28
$37,748 USD
View
9 more retailers have this diamond
Prices start from $10,929 USDSave up to $26,819 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
5.28ct Radiant
$10,929 USD