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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 $15,412 NZD
$8,686 USD
As of October 30, 2026
Save $34,370 NZD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $49,782 NZD at Frank Darling · As of October 31, 2026
View at Frank Darling

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 30, 2026, with prices from $15,412 to $49,782, a $34,370 spread on the same certified stone. Frank Darling lists it at $49,782. 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+
Exceptional
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 30
Current: $49,782 NZD|Low: $15,412 NZD|High: $107,700 NZD|Avg: $31,994 NZD|-18.3%
Frank Darling
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 31, 2026
Retailer 11$15,412 NZD
Retailer 6$15,525 NZD
Retailer 13$15,649 NZD
Retailer 5$16,027 NZD
Retailer 3$17,708 NZD
Retailer 14$19,886 NZD
Retailer 12$20,683 NZD
Retailer 10$21,371 NZD
Retailer 4$22,193 NZD
Retailer 7$22,260 NZD
Retailer 8$31,547 NZD
Retailer 2$34,850 NZD
Retailer 9$35,412 NZD
Frank Darling$49,782 NZD
Retailer 15$96,167 NZD

40 data points across 15 retailers

15 retailers$15,412 NZD to $49,782 NZD

A+
Cheapest Retailer
-
$15,412 NZD
$8,686 USD
A
Retailer 2
-
$15,525 NZD
$8,750 USD
View
A
Retailer 3
-
$15,649 NZD
$8,820 USD
View
A
Retailer 4
-
$16,027 NZD
$9,033 USD
View
A
Retailer 5
-
$17,708 NZD
$9,980 USD
View
A
Retailer 6
-
$19,886 NZD
$11,208 USD
View
A
Retailer 7
-
$20,683 NZD
$11,657 USD
View
A
Retailer 8
-
$21,371 NZD
$12,045 USD
View
A
Retailer 9
-
$22,193 NZD
$12,508 USD
View
A
Retailer 10
-
$22,260 NZD
$12,546 USD
View
Final sale: no returns
A
Retailer 11
-
$31,547 NZD
$17,780 USD
View
B+
Retailer 12
-
$34,850 NZD
€18,706 EUR
View
B+
Retailer 13
-
$35,412 NZD
£15,715 GBP
View
Most Expensive
B+
Frank Darling
P82C-5EL · Oct 31
$49,782 NZD
$28,057 USD
View
13 more retailers have this diamond
Prices start from $15,412 NZDSave up to $34,370 NZD

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
$15,412 NZD