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Radiant|Lab Grown|IGI

5.10ct D IF Radiant Lab Grown Diamond

EX • D/IF • IGI LG828616343

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

Certificate IGI LG828616343

Diamond specifications and retailer prices

From $19,258 NZD
$10,854 USD
As of October 31, 2026
Save $39,700 NZD (67%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $58,958 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG828616343 or 828616343. Listed at 14 retailers as of October 31, 2026, with prices from $19,258 to $58,958, a $39,700 spread on the same certified stone. Taylor and Hart lists it at $58,958. 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
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.9°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828616343
Dimensions12.16 × 8.68 × 5.63 mm
L/W Ratio1.40
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
12.16 mm8.68 mm5.10 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828616343
Side View
Table 63.0%Crown 40.9°Girdle: MediumPavilion 33.4°Culet: NoneDepth 64.9%

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 31
Current: $31,481 NZD|Low: $19,258 NZD|High: $109,760 NZD|Avg: $40,479 NZD|-7.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
October 31, 2026
Retailer 6$19,258 NZD
Retailer 2$19,473 NZD
Retailer 9$20,463 NZD
Retailer 3$21,203 NZD
Retailer 5$22,648 NZD
Retailer 8$28,158 NZD
Retailer 1$31,481 NZD
Retailer 12$32,611 NZD
Retailer 7$34,278 NZD
Retailer 11$38,076 NZD
Retailer 4$55,741 NZD
Taylor and Hart$58,958 NZD
Retailer 10$101,919 NZD

19 data points across 13 retailers

14 retailers$19,258 NZD to $58,958 NZD

A
Cheapest Retailer
-
$19,258 NZD
$10,854 USD
A
Retailer 2
-
$19,473 NZD
$10,975 USD
View
A
Retailer 3
-
$20,463 NZD
HK$90,100 HKD
View
A
Retailer 4
-
$21,203 NZD
$11,950 USD
View
A
Retailer 5
-
$22,648 NZD
£10,051 GBP
View
A
Retailer 6
-
$28,158 NZD
$15,870 USD
View
A
Retailer 7
-
$31,481 NZD
€16,898 EUR
View
A
Retailer 8
-
$32,611 NZD
£14,472 GBP
View
B+
Retailer 9
-
$34,278 NZD
$19,319 USD
View
B+
Retailer 10
-
$38,076 NZD
ZAR 346,688 ZAR
View
B+
Retailer 11
-
$40,720 NZD
$22,950 USD
View
B
Retailer 12
-
$55,741 NZD
$31,416 USD
View
Most Expensive
B
Taylor and Hart
8M0LO44 · Oct 31
$58,958 NZD
$33,229 USD
View
12 more retailers have this diamond
Prices start from $19,258 NZDSave up to $39,700 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
$19,258 NZD