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Radiant|Lab Grown|IGI

5.10ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG816630992

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

Certificate IGI LG816630992

Diamond specifications and retailer prices

From $19,620 NZD
$11,058 USD
As of October 30, 2026
Save $48,210 NZD (71%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $67,830 NZD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 5.1ct lab-grown radiant diamond

This 5.1ct 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 LG816630992 or 816630992. Listed at 19 retailers as of October 30, 2026, with prices from $19,620 to $67,830, a $48,210 spread on the same certified stone. Taylor and Hart lists it at $67,830. 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

5.10
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.1°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816630992
Dimensions12.12 × 8.62 × 5.65 mm
L/W Ratio1.41
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
12.12 mm8.62 mm5.10 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816630992
Side View
Table 63.0%Crown 47.1°Girdle: Slightly ThickPavilion 34.9°Culet: NoneDepth 65.5%

Caratlytics Score

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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: $36,301 NZD|Low: $19,081 NZD|High: $77,133 NZD|Avg: $35,162 NZD|-16.2%
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
Taylor and Hart
October 31, 2026
Retailer 8$19,620 NZD
Retailer 5$19,897 NZD
Retailer 13$20,404 NZD
Retailer 18$20,967 NZD
Retailer 9$21,331 NZD
Retailer 6$21,973 NZD
Retailer 16$22,454 NZD
Retailer 2$22,759 NZD
Retailer 10$22,759 NZD
Retailer 17$23,323 NZD
Retailer 15$24,280 NZD
Retailer 14$24,524 NZD
Retailer 11$27,108 NZD
Retailer 7$32,611 NZD
Retailer 12$35,123 NZD
Retailer 1$36,301 NZD
Retailer 4$41,627 NZD
Retailer 3$63,420 NZD
Taylor and Hart$67,830 NZD

41 data points across 19 retailers

19 retailers$19,620 NZD to $67,830 NZD

A
Cheapest Retailer
-
$19,620 NZD
$11,058 USD
A
Retailer 2
-
$19,897 NZD
$11,214 USD
View
A
Retailer 3
-
$20,404 NZD
$11,500 USD
View
A
Retailer 4
-
$20,967 NZD
$11,817 USD
View
A
Retailer 5
-
$21,331 NZD
$12,022 USD
View
A
Retailer 6
-
$21,973 NZD
$12,384 USD
View
Final sale: no returns
A
Retailer 7
-
$22,454 NZD
$12,655 USD
View
A
Retailer 8
-
$22,759 NZD
$12,827 USD
View
Retailer 9
-
$22,759 NZD
$12,827 USD
View
Price last confirmed 15 days ago
Retailer 10
-
$23,323 NZD
$13,145 USD
View
Price last confirmed 13 days ago
A
Retailer 11
-
$24,280 NZD
$13,684 USD
View
A
Retailer 12
-
$24,524 NZD
$13,822 USD
View
A
Retailer 13
-
$27,108 NZD
£12,030 GBP
View
A
Retailer 14
-
$32,611 NZD
£14,472 GBP
View
B+
Retailer 15
-
$35,123 NZD
£15,587 GBP
View
B+
Retailer 16
-
$36,301 NZD
€19,485 EUR
View
B+
Retailer 17
-
$41,627 NZD
$23,461 USD
View
B
Retailer 18
-
$63,420 NZD
$35,744 USD
View
Most Expensive
B
Taylor and Hart
HJ0E7UE · Oct 31
$67,830 NZD
$38,229 USD
View
18 more retailers have this diamond
Prices start from $19,620 NZDSave up to $48,210 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
5.10ct Radiant
$19,620 NZD