CaratHunter
Plans
Round|Lab Grown|IGI

1.51ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG440014574

Shape and cutting style on the report: Round brilliant

Certificate IGI LG440014574

Diamond specifications and retailer prices

From $1,494 NZD
As of November 5, 2026
Save $7,588 NZD (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $9,082 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG440014574 or 440014574. Listed at 12 retailers as of November 5, 2026, with prices from $1,494 to $9,082, a $7,588 spread on the same certified stone. MOH London lists it at $9,082. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440014574
Dimensions7.54 × 7.51 × 4.42 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) process Type IIa
Top View
7.54 mm7.51 mm1.51 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG440014574
Side View
Table 57.5%Crown 31.5°Girdle: MediumPavilion 40.2°Culet: NoneDepth 58.7%

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: $9,082 NZD|Low: $1,494 NZD|High: $9,229 NZD|Avg: $4,283 NZD|-0.3%
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
November 6, 2026
Retailer 7$1,494 NZD
Retailer 8$2,444 NZD
Retailer 11$2,658 NZD
Retailer 13$2,734 NZD
Retailer 9$2,834 NZD
Retailer 14$2,834 NZD
Retailer 3$3,140 NZD
Retailer 5$3,878 NZD
Retailer 10$4,477 NZD
Retailer 2$5,098 NZD
Retailer 4$5,283 NZD
Retailer 12$5,314 NZD
Retailer 6$8,112 NZD
MOH London$9,082 NZD

43 data points across 14 retailers

12 retailers$1,494 NZD to $9,082 NZD

A
Cheapest Retailer
-
$1,494 NZD
B+
Retailer 2
-
$2,444 NZD
View
B+
Retailer 3
-
$2,658 NZD
View
B+
Retailer 4
-
$2,734 NZD
View
Final sale: no returns
Retailer 5
-
$2,834 NZD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
$2,834 NZD
View
B+
Retailer 7
-
$3,140 NZD
View
B
Retailer 8
-
$4,477 NZD
View
B
Retailer 9
-
$5,098 NZD
View
B
Retailer 10
-
$5,283 NZD
View
B
Retailer 11
-
$5,314 NZD
View
Most Expensive
B
MOH London
LG440014574 · Nov 5
$9,082 NZD
£4,020 GBP
View
11 more retailers have this diamond
Prices start from $1,494 NZDSave up to $7,588 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
$1,494 NZD