CaratHunter
Plans
Round|Lab Grown|IGI

1.51ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG779621240

Shape and cutting style on the report: Round brilliant

Certificate IGI LG779621240

Diamond specifications and retailer prices

From $391 NZD
As of November 5, 2026
Save $1,843 NZD (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,234 NZD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG779621240 or 779621240. Listed at 21 retailers as of November 5, 2026, with prices from $391 to $2,234, a $1,843 spread on the same certified stone. Reve Diamonds lists it at $2,234. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779621240
Dimensions7.33 × 7.38 × 4.52 mm
L/W Ratio1.01
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
7.33 mm7.38 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779621240
Side View
Table 57.0%Crown 34.7°Girdle: MediumPavilion 40.5°Culet: NoneDepth 61.6%

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: Nov 5
Current: $749 NZD|Low: $375 NZD|High: $2,234 NZD|Avg: $1,059 NZD|-1.2%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Reve Diamonds
November 6, 2026
Retailer 17$391 NZD
Retailer 9$436 NZD
Retailer 3$454 NZD
Retailer 2$484 NZD
Retailer 7$484 NZD
Retailer 5$655 NZD
Retailer 1$749 NZD
Retailer 11$779 NZD
Retailer 4$793 NZD
Retailer 12$888 NZD
Retailer 8$936 NZD
Retailer 16$968 NZD
Retailer 15$1,188 NZD
Retailer 13$1,352 NZD
Retailer 6$1,557 NZD
Retailer 10$1,649 NZD
Retailer 18$1,850 NZD
Retailer 14$1,939 NZD
Reve Diamonds$2,234 NZD

44 data points across 19 retailers

21 retailers$391 NZD to $2,234 NZD

A
Cheapest Retailer
-
$391 NZD
A
Retailer 2
-
$436 NZD
View
Final sale: no returns
A
Retailer 3
-
$454 NZD
View
A
Retailer 4
-
$484 NZD
View
Retailer 5
-
$484 NZD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$655 NZD
View
A
Retailer 7
-
$749 NZD
View
A
Retailer 8
-
$779 NZD
View
A
Retailer 9
-
$793 NZD
View
A
Retailer 10
-
$888 NZD
View
B+
Retailer 11
-
$936 NZD
View
B+
Retailer 12
-
$968 NZD
View
B+
Retailer 13
-
$1,188 NZD
View
Retailer 14
-
$1,258 NZD
View
Price last confirmed 9 days ago
B
Retailer 15
-
$1,352 NZD
View
B+
Retailer 16
-
$1,370 NZD
View
B
Retailer 17
-
$1,557 NZD
View
B
Retailer 18
-
$1,649 NZD
View
B
Retailer 19
-
$1,850 NZD
View
B
Retailer 20
-
$1,939 NZD
View
Most Expensive
B
Reve Diamonds
34A7E3B50 · Nov 6
$2,234 NZD
$1,256 USD
View
20 more retailers have this diamond
Prices start from $391 NZDSave up to $1,843 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
$391 NZD