CaratHunter
Plans
Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG786646501

Shape and cutting style on the report: Round brilliant

Certificate IGI LG786646501

Diamond specifications and retailer prices

From $749 NZD
As of November 3, 2026
Save $7,057 NZD (90%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $7,806 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 LG786646501 or 786646501. Listed at 24 retailers as of November 3, 2026, with prices from $749 to $7,806, a $7,057 spread on the same certified stone. Brilliant Earth lists it at $7,806. 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 angle33.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786646501
Dimensions7.42 × 7.45 × 4.44 mm
L/W Ratio1.00
Girdle conditionFaceted
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
7.42 mm7.45 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786646501
Side View
Table 59.0%Crown 33.2°Girdle: MediumPavilion 40.6°Culet: NoneDepth 59.8%

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: Nov 3
Current: $7,806 NZD|Low: $718 NZD|High: $7,806 NZD|Avg: $2,182 NZD
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
November 5, 2026
Retailer 16$749 NZD
Retailer 13$837 NZD
Retailer 7$839 NZD
Retailer 3$930 NZD
Retailer 14$1,189 NZD
Retailer 6$1,355 NZD
Retailer 9$1,456 NZD
Retailer 2$1,511 NZD
Retailer 11$1,602 NZD
Retailer 12$2,163 NZD
Retailer 10$2,265 NZD
Retailer 5$2,948 NZD
Retailer 8$2,986 NZD
Retailer 15$3,417 NZD
Retailer 4$3,477 NZD
Brilliant Earth$7,806 NZD

45 data points across 16 retailers

24 retailers$749 NZD to $7,806 NZD

A
Cheapest Retailer
-
$749 NZD
A
Retailer 2
-
$837 NZD
View
Final sale: no returns
A
Retailer 3
-
$839 NZD
View
Retailer 4
-
$930 NZD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$930 NZD
View
A
Retailer 6
-
$1,022 NZD
View
A
Retailer 7
-
$1,189 NZD
View
A
Retailer 8
-
$1,245 NZD
View
A
Retailer 9
-
$1,355 NZD
View
A
Retailer 10
-
$1,456 NZD
View
A
Retailer 11
-
$1,511 NZD
View
A
Retailer 12
-
$1,602 NZD
View
A
Retailer 13
-
$1,769 NZD
View
B+
Retailer 14
-
$2,163 NZD
View
B+
Retailer 15
-
$2,265 NZD
View
B+
Retailer 16
-
$2,948 NZD
View
B+
Retailer 17
-
$2,986 NZD
View
B+
Retailer 18
-
$3,010 NZD
View
B+
Retailer 19
-
$3,044 NZD
View
B
Retailer 20
-
$3,376 NZD
View
Retailer 21
-
$3,417 NZD
View
Price last confirmed 10 days ago
B+
Retailer 22
-
$3,477 NZD
View
Retailer 23
-
$5,159 NZD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21370785A · Nov 3
$7,806 NZD
$4,400 USD
View
23 more retailers have this diamond
Prices start from $749 NZDSave up to $7,057 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
$749 NZD