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1.51ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG749570981

Shape and cutting style on the report: Round brilliant

Certificate IGI LG749570981

Diamond specifications and retailer prices

From $416 NZD
As of November 5, 2026
Save $1,899 NZD (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,315 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 LG749570981 or 749570981. Listed at 21 retailers as of November 5, 2026, with prices from $416 to $2,315, a $1,899 spread on the same certified stone. Reve Diamonds lists it at $2,315. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG749570981
Dimensions7.32 × 7.30 × 4.61 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
7.32 mm7.30 mm1.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG749570981
Side View
Table 57.0%Crown 34.4°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 63.1%

Caratlytics Score

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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: Nov 5
Current: $799 NZD|Low: $413 NZD|High: $2,315 NZD|Avg: $1,128 NZD|-0.7%
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
Reve Diamonds
November 6, 2026
Retailer 8$416 NZD
Retailer 15$466 NZD
Retailer 16$482 NZD
Retailer 3$516 NZD
Retailer 4$516 NZD
Retailer 1$799 NZD
Retailer 17$802 NZD
Retailer 5$873 NZD
Retailer 11$961 NZD
Retailer 2$964 NZD
Retailer 10$966 NZD
Retailer 13$1,352 NZD
Retailer 9$1,658 NZD
Retailer 14$1,663 NZD
Retailer 7$1,750 NZD
Retailer 12$2,062 NZD
Retailer 6$2,170 NZD
Reve Diamonds$2,315 NZD

32 data points across 18 retailers

21 retailers$416 NZD to $2,315 NZD

A
Cheapest Retailer
-
$416 NZD
A
Retailer 2
-
$466 NZD
View
Final sale: no returns
A
Retailer 3
-
$482 NZD
View
Retailer 4
-
$516 NZD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$516 NZD
View
A
Retailer 6
-
$799 NZD
View
A
Retailer 7
-
$802 NZD
View
B+
Retailer 8
-
$873 NZD
View
B+
Retailer 9
-
$961 NZD
View
B+
Retailer 10
-
$964 NZD
View
B+
Retailer 11
-
$966 NZD
View
B
Retailer 12
-
$1,352 NZD
View
B+
Retailer 13
-
$1,370 NZD
View
Retailer 14
-
$1,412 NZD
View
Price last confirmed 68 days ago
Retailer 15
-
$1,644 NZD
View
Price last confirmed 46 days ago
B
Retailer 16
-
$1,658 NZD
View
B
Retailer 17
-
$1,663 NZD
View
B
Retailer 18
-
$1,750 NZD
View
B
Retailer 19
-
$2,062 NZD
View
B
Retailer 20
-
$2,170 NZD
View
Most Expensive
B
Reve Diamonds
721BB40CF · Nov 6
$2,315 NZD
$1,302 USD
View
20 more retailers have this diamond
Prices start from $416 NZDSave up to $1,899 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
$416 NZD