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Radiant|Lab Grown|IGI

5.10ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG787621181

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

Certificate IGI LG787621181

Diamond specifications and retailer prices

From $18,758 NZD
$10,572 USD
As of October 30, 2026
Save $46,836 NZD (71%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $65,594 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 LG787621181 or 787621181. Listed at 13 retailers as of October 30, 2026, with prices from $18,758 to $65,594, a $46,836 spread on the same certified stone. Taylor and Hart lists it at $65,594. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.4°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787621181
Dimensions12.03 × 8.63 × 5.75 mm
L/W Ratio1.39
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
12.03 mm8.63 mm5.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787621181
Side View
Table 63.0%Crown 44.4°Girdle: MED-STKPavilion 34°Culet: NoneDepth 66.6%

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 30
Current: $36,323 NZD|Low: $18,096 NZD|High: $117,601 NZD|Avg: $40,767 NZD|-15.9%
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
Taylor and Hart
October 31, 2026
Retailer 5$18,096 NZD
Retailer 11$18,758 NZD
Retailer 13$20,092 NZD
Retailer 2$20,970 NZD
Retailer 10$21,895 NZD
Retailer 7$25,651 NZD
Retailer 6$30,482 NZD
Retailer 9$34,037 NZD
Retailer 1$36,323 NZD
Retailer 4$39,423 NZD
Retailer 8$43,793 NZD
Retailer 12$59,723 NZD
Taylor and Hart$65,594 NZD
Retailer 3$117,601 NZD

35 data points across 14 retailers

13 retailers$18,758 NZD to $65,594 NZD

A
Cheapest Retailer
-
$18,758 NZD
$10,572 USD
A
Retailer 2
-
$20,092 NZD
$11,324 USD
View
A
Retailer 3
-
$20,970 NZD
$11,819 USD
View
A
Retailer 4
-
$21,895 NZD
$12,340 USD
View
A
Retailer 5
-
$25,651 NZD
£11,383 GBP
View
A
Retailer 6
-
$30,482 NZD
$17,180 USD
View
A
Retailer 7
-
$34,037 NZD
£15,105 GBP
View
B+
Retailer 8
-
$36,323 NZD
€19,497 EUR
View
B+
Retailer 9
-
$39,423 NZD
$22,219 USD
View
B+
Retailer 10
-
$43,793 NZD
ZAR 398,734 ZAR
View
B+
Retailer 11
-
$59,723 NZD
$33,660 USD
View
Most Expensive
B
Taylor and Hart
96R8Q77 · Oct 31
$65,594 NZD
$36,969 USD
View
11 more retailers have this diamond
Prices start from $18,758 NZDSave up to $46,836 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
$18,758 NZD