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Round|Lab Grown|IGI

1.57ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG442038198

Shape and cutting style on the report: Round brilliant

Certificate IGI LG442038198

Diamond specifications and retailer prices

From $421 AUD
$296 USD
As of October 29, 2026
Save $1,893 AUD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,744 AUD at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

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 LG442038198 or 442038198. Listed at 15 retailers as of October 26, 2026, with a 449% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG442038198
Dimensions7.57 × 7.51 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
7.57 mm7.51 mm1.57 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG442038198
Side View
Table 59.0%Crown 34°Girdle: MediumPavilion 41°Culet: NoneDepth 60.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $3,744 AUD|Low: $263 AUD|High: $3,744 AUD|Avg: $1,157 AUD
Do Amore Diamonds
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
October 31, 2026
Retailer 6$263 AUD
Retailer 9$421 AUD
Retailer 12$522 AUD
Retailer 13$522 AUD
Retailer 10$568 AUD
Retailer 11$747 AUD
Retailer 14$857 AUD
Retailer 2$1,028 AUD
Retailer 4$1,199 AUD
Retailer 8$1,604 AUD
Retailer 5$1,878 AUD
Retailer 3$2,083 AUD
Retailer 7$2,314 AUD
Do Amore Diamonds$3,744 AUD

28 data points across 14 retailers

15 retailers$421 AUD to $2,314 AUD

Retailer 1
-
$383 AUD
$269 USD
Price last confirmed 25 days ago
Retailer 2
-
$409 AUD
$287 USD
View
Price last confirmed 29 days ago
A
Retailer 3
-
$421 AUD
$296 USD
View
A
Retailer 4
-
$522 AUD
$367 USD
View
A
Retailer 5
-
$522 AUD
$367 USD
View
A
Retailer 6
-
$568 AUD
$399 USD
View
B+
Retailer 7
-
$747 AUD
$525 USD
View
B+
Retailer 8
-
$857 AUD
$602 USD
View
B+
Retailer 9
-
$1,028 AUD
£569 GBP
View
B
Retailer 10
-
$1,199 AUD
$843 USD
View
B
Retailer 11
-
$1,604 AUD
$1,127 USD
View
B
Retailer 12
-
$1,878 AUD
$1,319 USD
View
B
Retailer 13
-
$2,083 AUD
$1,463 USD
View
B
Retailer 14
-
$2,314 AUD
£1,280 GBP
View
Most Expensive
Do Amore Diamonds
27-E64C8D2CC · Oct 30
$3,744 AUD
$2,630 USD
View
Price under review
14 more retailers have this diamond
Prices start from $421 AUDSave up to $1,893 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
$421 AUD