CaratHunter
Plans
Radiant|Lab Grown|IGI

5.28ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG780661346

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

Certificate IGI LG780661346

Diamond specifications and retailer prices

From $11,136 SGD
$8,686 USD
As of October 27, 2026
Save $26,237 SGD (70%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $37,373 SGD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

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 LG780661346 or 780661346. Listed at 15 retailers as of October 27, 2026, with prices from $11,136 to $37,373, a $26,237 spread on the same certified stone. Brilliant Earth lists it at $37,373. 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
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780661346
Dimensions12.25 × 8.73 × 5.59 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
12.25 mm8.73 mm5.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780661346
Side View
Table 66.0%Crown 41.9°Girdle: Slightly ThickPavilion 33.1°Culet: NoneDepth 64.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $37,373 SGD|Low: $11,136 SGD|High: $77,823 SGD|Avg: $23,599 SGD|-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$11,136 SGD
Retailer 6$11,218 SGD
Retailer 11$11,308 SGD
Retailer 3$11,581 SGD
Retailer 14$12,795 SGD
Retailer 12$14,370 SGD
Retailer 10$14,945 SGD
Retailer 8$15,443 SGD
Retailer 15$16,037 SGD
Retailer 7$16,085 SGD
Retailer 5$25,117 SGD
Retailer 2$25,588 SGD
Retailer 4$35,972 SGD
Brilliant Earth$37,373 SGD
Retailer 13$69,490 SGD

38 data points across 15 retailers

15 retailers$11,136 SGD to $37,373 SGD

A
Cheapest Retailer
-
$11,136 SGD
$8,686 USD
A
Retailer 2
-
$11,218 SGD
$8,750 USD
View
A
Retailer 3
-
$11,308 SGD
$8,820 USD
View
A
Retailer 4
-
$11,581 SGD
$9,033 USD
View
A
Retailer 5
-
$12,795 SGD
$9,980 USD
View
A
Retailer 6
-
$14,370 SGD
$11,208 USD
View
A
Retailer 7
-
$14,945 SGD
$11,657 USD
View
A
Retailer 8
-
$15,443 SGD
$12,045 USD
View
A
Retailer 9
-
$16,037 SGD
$12,508 USD
View
A
Retailer 10
-
$16,085 SGD
$12,546 USD
View
Final sale: no returns
B+
Retailer 11
-
$25,117 SGD
€18,658 EUR
View
B+
Retailer 12
-
$25,588 SGD
£15,715 GBP
View
B+
Retailer 13
-
$35,972 SGD
$28,057 USD
View
Most Expensive
B
Brilliant Earth
18350423Y · Oct 28
$37,373 SGD
$29,150 USD
View
13 more retailers have this diamond
Prices start from $11,136 SGDSave up to $26,237 SGD

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
$11,136 SGD