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1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG839676181

Shape and cutting style on the report: Round brilliant

Certificate IGI LG839676181

Diamond specifications and retailer prices

From $591 NZD
As of November 3, 2026
Save $4,678 NZD (89%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,269 NZD at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG839676181 or 839676181. Listed at 20 retailers as of November 3, 2026, with prices from $591 to $5,269, a $4,678 spread on the same certified stone. Brilliant Earth lists it at $5,269. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839676181
Dimensions7.37 × 7.41 × 4.50 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.37 mm7.41 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839676181
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
A+
Exceptional
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: Nov 3
Current: $5,269 NZD|Low: $591 NZD|High: $6,936 NZD|Avg: $1,631 NZD|-17.7%
Brilliant Earth
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
November 5, 2026
Retailer 19$591 NZD
Retailer 15$662 NZD
Retailer 5$687 NZD
Retailer 6$733 NZD
Retailer 9$743 NZD
Retailer 10$816 NZD
Retailer 14$937 NZD
Retailer 8$993 NZD
Retailer 17$1,002 NZD
Retailer 18$1,194 NZD
Retailer 11$1,197 NZD
Retailer 7$1,281 NZD
Retailer 13$1,297 NZD
Retailer 16$1,723 NZD
Retailer 20$2,152 NZD
Retailer 4$2,342 NZD
Retailer 3$2,358 NZD
Retailer 12$2,615 NZD
Retailer 2$2,931 NZD
Brilliant Earth$5,269 NZD

21 data points across 20 retailers

20 retailers$591 NZD to $5,269 NZD

A+
Cheapest Retailer
-
$591 NZD
A
Retailer 2
-
$662 NZD
View
Final sale: no returns
A
Retailer 3
-
$687 NZD
View
A
Retailer 4
-
$733 NZD
View
Retailer 5
-
$743 NZD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$816 NZD
View
A
Retailer 7
-
$937 NZD
View
A
Retailer 8
-
$993 NZD
View
A
Retailer 9
-
$1,002 NZD
View
A
Retailer 10
-
$1,194 NZD
View
A
Retailer 11
-
$1,197 NZD
View
A
Retailer 12
-
$1,281 NZD
View
A
Retailer 13
-
$1,297 NZD
View
A
Retailer 14
-
$1,723 NZD
View
B+
Retailer 15
-
$2,152 NZD
View
B+
Retailer 16
-
$2,342 NZD
View
B+
Retailer 17
-
$2,358 NZD
View
B+
Retailer 18
-
$2,615 NZD
View
B+
Retailer 19
-
$2,931 NZD
View
Most Expensive
B
Brilliant Earth
21696745A · Nov 3
$5,269 NZD
$2,970 USD
View
19 more retailers have this diamond
Prices start from $591 NZDSave up to $4,678 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 Round
$591 NZD