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1.54ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG618416961

Shape and cutting style on the report: Round brilliant

Certificate IGI LG618416961

Diamond specifications and retailer prices

From $955 NZD
As of November 5, 2026
Save $160 NZD (14%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $2,625 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.54ct lab-grown round diamond

This 1.54ct 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 LG618416961 or 618416961. Listed at 6 retailers as of November 5, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.54
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618416961
Dimensions7.54 × 7.50 × 4.47 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.54 mm7.50 mm1.54 ctI / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618416961
Side View
Table 59.0%Crown 33.1°Girdle: MediumPavilion 40.8°Culet: NoneDepth 59.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: $2,625 NZD|Low: $818 NZD|High: $2,643 NZD|Avg: $1,225 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 4, 2026
Retailer 6$818 NZD
Retailer 5$955 NZD
Retailer 7$978 NZD
Retailer 3$1,066 NZD
Retailer 2$1,067 NZD
Retailer 4$1,115 NZD
MOH London$2,625 NZD

11 data points across 7 retailers

6 retailers$955 NZD to $1,115 NZD

Retailer 1
-
$818 NZD
Price last confirmed 63 days ago
A
Retailer 2
-
$955 NZD
View
A
Retailer 3
-
$1,066 NZD
View
A
Retailer 4
-
$1,067 NZD
View
A
Retailer 5
-
$1,115 NZD
View
Most Expensive
MOH London
LG618416961 · Oct 29
$2,625 NZD
£1,162 GBP
View
Price last confirmed 8 days ago
5 more retailers have this diamond
Prices start from $955 NZDSave up to $160 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
1.54ct Round
$955 NZD