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1.58ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG825658780

Shape and cutting style on the report: Round brilliant

Certificate IGI LG825658780

Diamond specifications and retailer prices

From $355 NZD
$200 USD
As of November 1, 2026
Save $1,711 NZD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,066 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.58ct lab-grown round diamond

This 1.58ct lab-grown round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG825658780 or 825658780. Listed at 14 retailers as of October 29, 2026, with prices from $355 to $2,066, a $1,711 spread on the same certified stone. MOH London lists it at $2,066. 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

1.58
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825658780
Dimensions7.53 × 7.47 × 4.58 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.53 mm7.47 mm1.58 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825658780
Side View
Table 57.0%Crown 35.2°Girdle: THN-MEDPavilion 40.5°Culet: NoneDepth 61.1%

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 1
Current: $2,066 NZD|Low: $355 NZD|High: $2,080 NZD|Avg: $1,087 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 7$355 NZD
Retailer 9$440 NZD
Retailer 4$734 NZD
Retailer 10$765 NZD
Retailer 2$804 NZD
Retailer 11$871 NZD
Retailer 6$1,136 NZD
Retailer 5$1,269 NZD
Retailer 3$1,508 NZD
Retailer 8$1,597 NZD
MOH London$2,066 NZD

43 data points across 11 retailers

14 retailers$355 NZD to $2,066 NZD

A
Cheapest Retailer
-
$355 NZD
$200 USD
A
Retailer 2
-
$412 NZD
$232 USD
View
Retailer 3
-
$440 NZD
$248 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$440 NZD
$248 USD
View
A
Retailer 5
-
$734 NZD
€394 EUR
View
B+
Retailer 6
-
$765 NZD
$431 USD
View
A
Retailer 7
-
$804 NZD
£357 GBP
View
A
Retailer 8
-
$871 NZD
$491 USD
View
B+
Retailer 9
-
$1,136 NZD
$640 USD
View
B+
Retailer 10
-
$1,269 NZD
$715 USD
View
B+
Retailer 11
-
$1,412 NZD
$796 USD
View
B
Retailer 12
-
$1,508 NZD
$850 USD
View
B
Retailer 13
-
$1,597 NZD
$900 USD
View
Most Expensive
B
MOH London
LG825658780 · Oct 29
$2,066 NZD
£917 GBP
View
13 more retailers have this diamond
Prices start from $355 NZDSave up to $1,711 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
1.58ct Round
$355 NZD