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Round|Lab Grown|IGI

1.57ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG758503526

Shape and cutting style on the report: Round brilliant

Certificate IGI LG758503526

Diamond specifications and retailer prices

From $344 NZD
$194 USD
As of November 1, 2026
Save $1,650 NZD (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,994 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 1.57ct lab-grown round diamond

This 1.57ct 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 LG758503526 or 758503526. Listed at 13 retailers as of November 1, 2026, with prices from $344 to $1,994, a $1,650 spread on the same certified stone. MOH London lists it at $1,994. 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

1.57
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG758503526
Dimensions7.48 × 7.46 × 4.54 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.48 mm7.46 mm1.57 ctG / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG758503526
Side View
Table 58.0%Crown 34.5°Girdle: MediumPavilion 40.5°Culet: NoneDepth 60.8%

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 1
Current: $1,994 NZD|Low: $330 NZD|High: $2,021 NZD|Avg: $901 NZD
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
November 2, 2026
Retailer 7$344 NZD
Retailer 13$399 NZD
Retailer 8$426 NZD
Retailer 5$431 NZD
Retailer 4$725 NZD
Retailer 3$743 NZD
Retailer 2$770 NZD
Retailer 11$857 NZD
Retailer 12$887 NZD
Retailer 9$1,372 NZD
Retailer 10$1,377 NZD
Retailer 6$1,597 NZD
MOH London$1,994 NZD

41 data points across 13 retailers

13 retailers$344 NZD to $1,994 NZD

A
Cheapest Retailer
-
$344 NZD
$194 USD
A
Retailer 2
-
$399 NZD
$225 USD
View
A
Retailer 3
-
$426 NZD
$240 USD
View
Retailer 4
-
$431 NZD
$243 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$725 NZD
€389 EUR
View
B+
Retailer 6
-
$743 NZD
$419 USD
View
A
Retailer 7
-
$770 NZD
£342 GBP
View
A
Retailer 8
-
$857 NZD
$483 USD
View
A
Retailer 9
-
$887 NZD
$500 USD
View
B
Retailer 10
-
$1,372 NZD
$773 USD
View
B+
Retailer 11
-
$1,377 NZD
$776 USD
View
B
Retailer 12
-
$1,597 NZD
$900 USD
View
Most Expensive
B
MOH London
LG758503526 · Nov 1
$1,994 NZD
£885 GBP
View
12 more retailers have this diamond
Prices start from $344 NZDSave up to $1,650 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
1.57ct Round
$344 NZD