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Radiant|Lab Grown|IGI

1.51ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG641494187

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

Certificate IGI LG641494187

Diamond specifications and retailer prices

From $504 NZD
$284 USD
As of October 30, 2026
Save $4,561 NZD (90%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $5,065 NZD at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG641494187 or 641494187. Listed at 24 retailers as of October 30, 2026, with prices from $504 to $5,065, a $4,561 spread on the same certified stone. Diamond Quarter lists it at $5,065. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG641494187
Dimensions8.26 × 5.61 × 3.82 mm
L/W Ratio1.47
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
8.26 mm5.61 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG641494187
Side View
Table 61.0%Crown 33.2°Girdle: MediumPavilion 33.1°Culet: NoneDepth 68.1%

Caratlytics Score

How it works →
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: $711 NZD|Low: $484 NZD|High: $4,471 NZD|Avg: $1,696 NZD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
Retailer 8
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Retailer 11
Retailer 12
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Retailer 16
Retailer 17
Retailer 18
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Retailer 22
Retailer 23
November 1, 2026
Retailer 2$504 NZD
Retailer 9$564 NZD
Retailer 23$586 NZD
Retailer 3$626 NZD
Retailer 13$626 NZD
Retailer 1$711 NZD
Retailer 14$886 NZD
Retailer 19$905 NZD
Retailer 8$1,027 NZD
Retailer 6$1,088 NZD
Retailer 18$1,186 NZD
Retailer 12$1,231 NZD
Retailer 4$1,405 NZD
Retailer 17$1,610 NZD
Retailer 22$1,922 NZD
Retailer 7$2,220 NZD
Retailer 16$2,509 NZD
Retailer 11$2,570 NZD
Retailer 10$2,589 NZD
Retailer 15$2,677 NZD
Retailer 21$2,783 NZD
Retailer 20$3,832 NZD
Retailer 5$4,471 NZD

34 data points across 23 retailers

24 retailers$504 NZD to $5,065 NZD

A
Cheapest Retailer
-
$504 NZD
$284 USD
A
Retailer 2
-
$564 NZD
$318 USD
View
Final sale: no returns
A
Retailer 3
-
$586 NZD
$330 USD
View
Retailer 4
-
$626 NZD
$353 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$626 NZD
$353 USD
View
A
Retailer 6
-
$711 NZD
£316 GBP
View
A
Retailer 7
-
$886 NZD
HK$3,900 HKD
View
A
Retailer 8
-
$905 NZD
$510 USD
View
A
Retailer 9
-
$1,027 NZD
$579 USD
View
A
Retailer 10
-
$1,088 NZD
$613 USD
View
A
Retailer 11
-
$1,186 NZD
ZAR 10,803 ZAR
View
A
Retailer 12
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$1,231 NZD
£546 GBP
View
A
Retailer 13
-
$1,405 NZD
$792 USD
View
A
Retailer 14
-
$1,610 NZD
A$1,396 AUD
View
B+
Retailer 15
-
$1,922 NZD
$1,083 USD
View
B+
Retailer 16
-
$2,220 NZD
$1,251 USD
View
B+
Retailer 17
-
$2,509 NZD
$1,414 USD
View
B+
Retailer 18
-
$2,570 NZD
SGD 1,957 SGD
View
B+
Retailer 19
-
$2,589 NZD
$1,459 USD
View
B+
Retailer 20
-
$2,677 NZD
£1,188 GBP
View
B+
Retailer 21
-
$2,783 NZD
£1,235 GBP
View
Retailer 22
-
$3,832 NZD
$2,160 USD
View
Price last confirmed 13 days ago
B
Retailer 23
-
$4,471 NZD
$2,520 USD
View
Most Expensive
B
Diamond Quarter
1.51IFELG87DFCEN · Oct 31
$5,065 NZD
£2,248 GBP
View
23 more retailers have this diamond
Prices start from $504 NZDSave up to $4,561 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
1.51ct Radiant
$504 NZD