CaratHunter
Plans
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 $276 AUD
$194 USD
As of November 1, 2026
Save $1,324 AUD (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,600 AUD 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 12 retailers as of November 1, 2026, with prices from $276 to $1,600, a $1,324 spread on the same certified stone. MOH London lists it at $1,600. 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

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: $1,600 AUD|Low: $265 AUD|High: $1,622 AUD|Avg: $721 AUD
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 1, 2026
Retailer 2$276 AUD
Retailer 12$320 AUD
Retailer 7$342 AUD
Retailer 4$346 AUD
Retailer 3$581 AUD
Retailer 13$596 AUD
Retailer 6$623 AUD
Retailer 10$688 AUD
Retailer 11$712 AUD
Retailer 8$1,100 AUD
Retailer 9$1,105 AUD
Retailer 5$1,310 AUD
MOH London$1,600 AUD

41 data points across 13 retailers

12 retailers$276 AUD to $1,600 AUD

A
Cheapest Retailer
-
$276 AUD
$194 USD
A
Retailer 2
-
$320 AUD
$225 USD
View
A
Retailer 3
-
$342 AUD
$240 USD
View
Retailer 4
-
$346 AUD
$243 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$581 AUD
€389 EUR
View
B+
Retailer 6
-
$596 AUD
$419 USD
View
A
Retailer 7
-
$623 AUD
£345 GBP
View
A
Retailer 8
-
$688 AUD
$483 USD
View
A
Retailer 9
-
$712 AUD
$500 USD
View
B
Retailer 10
-
$1,100 AUD
$773 USD
View
B+
Retailer 11
-
$1,105 AUD
$776 USD
View
Most Expensive
B
MOH London
LG758503526 · Nov 1
$1,600 AUD
£885 GBP
View
11 more retailers have this diamond
Prices start from $276 AUDSave up to $1,324 AUD

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
$276 AUD