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Radiant|Lab Grown|IGI

5.25ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG818640333

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

Certificate IGI LG818640333

Diamond specifications and retailer prices

From $10,610 NZD
$5,980 USD
As of October 27, 2026
Save $36,300 NZD (77%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $46,911 NZD at With Clarity · As of October 30, 2026
View at With Clarity

About this 5.25ct lab-grown radiant diamond

This 5.25ct 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 LG818640333 or 818640333. Listed at 21 retailers as of October 27, 2026, with prices from $10,610 to $46,911, a $36,300 spread on the same certified stone. With Clarity lists it at $46,911. 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

5.25
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.9°
Pavilion angle32.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818640333
Dimensions12.20 × 8.86 × 5.65 mm
L/W Ratio1.38
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 mm8.86 mm5.25 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818640333
Side View
Table 60.0%Crown 39.9°Girdle: Slightly ThickPavilion 32.6°Culet: NoneDepth 63.8%

Caratlytics Score

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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: $20,260 NZD|Low: $10,610 NZD|High: $46,911 NZD|Avg: $19,998 NZD|+0.2%
Retailer 1
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
With Clarity
October 31, 2026
Retailer 19$10,610 NZD
Retailer 6$11,120 NZD
Retailer 2$11,277 NZD
Retailer 13$12,273 NZD
Retailer 5$12,296 NZD
Retailer 10$12,308 NZD
Retailer 16$12,741 NZD
Retailer 9$14,611 NZD
Retailer 18$14,892 NZD
Retailer 14$15,418 NZD
Retailer 8$17,522 NZD
Retailer 20$18,130 NZD
Retailer 3$18,996 NZD
Retailer 17$19,029 NZD
Retailer 1$20,260 NZD
Retailer 7$23,291 NZD
Retailer 12$25,005 NZD
Retailer 15$25,179 NZD
Retailer 4$34,242 NZD
Retailer 11$42,972 NZD
With Clarity$46,911 NZD

12 data points across 21 retailers

21 retailers$10,610 NZD to $46,911 NZD

A
Cheapest Retailer
-
$10,610 NZD
$5,980 USD
A
Retailer 2
-
$11,120 NZD
$6,267 USD
View
A
Retailer 3
-
$11,277 NZD
$6,356 USD
View
A
Retailer 4
-
$12,273 NZD
$6,917 USD
View
Final sale: no returns
A
Retailer 5
-
$12,296 NZD
$6,930 USD
View
A
Retailer 6
-
$12,308 NZD
$6,937 USD
View
A
Retailer 7
-
$12,741 NZD
£5,654 GBP
View
A
Retailer 8
-
$14,611 NZD
$8,235 USD
View
A
Retailer 9
-
$14,892 NZD
$8,393 USD
View
A
Retailer 10
-
$15,418 NZD
£6,842 GBP
View
A
Retailer 11
-
$17,522 NZD
£7,776 GBP
View
A
Retailer 12
-
$18,130 NZD
$10,218 USD
View
A
Retailer 13
-
$18,996 NZD
$10,706 USD
View
A
Retailer 14
-
$19,029 NZD
$10,725 USD
View
A
Retailer 15
-
$20,260 NZD
€10,875 EUR
View
A
Retailer 16
-
$23,291 NZD
$13,127 USD
View
A
Retailer 17
-
$25,005 NZD
ZAR 227,670 ZAR
View
A
Retailer 18
-
$25,179 NZD
£11,174 GBP
View
B+
Retailer 19
-
$34,242 NZD
$19,299 USD
View
B+
Retailer 20
-
$42,972 NZD
$24,219 USD
View
Most Expensive
B+
With Clarity
818640333 · Oct 30
$46,911 NZD
$26,439 USD
View
20 more retailers have this diamond
Prices start from $10,610 NZDSave up to $36,300 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
5.25ct Radiant
$10,610 NZD