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1.51ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG792697758

Shape and cutting style on the report: Round brilliant

Certificate IGI LG792697758

Diamond specifications and retailer prices

From $340 NZD
As of November 5, 2026
Save $1,626 NZD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,966 NZD at MOH London · As of November 5, 2026
View at MOH London

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG792697758 or 792697758. Listed at 19 retailers as of November 5, 2026, with prices from $340 to $1,966, a $1,626 spread on the same certified stone. MOH London lists it at $1,966. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792697758
Dimensions7.43 × 7.38 × 4.51 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.43 mm7.38 mm1.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG792697758
Side View
Table 56.0%Crown 32°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.9%

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: $1,966 NZD|Low: $333 NZD|High: $2,033 NZD|Avg: $910 NZD|-3.1%
MOH London
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 6, 2026
Retailer 6$340 NZD
Retailer 16$379 NZD
Retailer 15$395 NZD
Retailer 11$422 NZD
Retailer 7$423 NZD
Retailer 3$738 NZD
Retailer 8$747 NZD
Retailer 2$756 NZD
Retailer 13$921 NZD
Retailer 14$1,014 NZD
Retailer 9$1,117 NZD
Retailer 10$1,263 NZD
Retailer 12$1,354 NZD
Retailer 4$1,375 NZD
Retailer 5$1,450 NZD
MOH London$1,966 NZD

34 data points across 16 retailers

19 retailers$340 NZD to $1,966 NZD

Retailer 1
-
$338 NZD
Price last confirmed 49 days ago
A
Retailer 2
-
$340 NZD
View
A
Retailer 3
-
$379 NZD
View
Final sale: no returns
A
Retailer 4
-
$395 NZD
View
Retailer 5
-
$413 NZD
View
Price last confirmed 48 days ago
A
Retailer 6
-
$422 NZD
View
Retailer 7
-
$423 NZD
View
Price last confirmed 12 days ago
B+
Retailer 8
-
$738 NZD
View
A
Retailer 9
-
$747 NZD
View
A
Retailer 10
-
$756 NZD
View
B+
Retailer 11
-
$921 NZD
View
B+
Retailer 12
-
$1,014 NZD
View
B+
Retailer 13
-
$1,117 NZD
View
B+
Retailer 14
-
$1,263 NZD
View
Retailer 15
-
$1,347 NZD
View
Price last confirmed 46 days ago
B+
Retailer 16
-
$1,354 NZD
View
B+
Retailer 17
-
$1,375 NZD
View
B+
Retailer 18
-
$1,450 NZD
View
Most Expensive
B
MOH London
LG792697758 · Nov 5
$1,966 NZD
£870 GBP
View
18 more retailers have this diamond
Prices start from $340 NZDSave up to $1,626 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
$340 NZD