CaratHunter
Plans
Oval|Lab Grown|IGI

1.57ct D SI1 Oval Lab Grown Diamond

GD • D/SI1 • IGI LG743578131

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG743578131

Diamond specifications and retailer prices

From $495 AUD
$348 USD
As of November 1, 2026
Save $717 AUD (59%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,513 AUD at MOH London · As of October 21, 2026
View at MOH London

About this 1.57ct lab-grown oval diamond

This 1.57ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG743578131 or 743578131. Listed at 11 retailers as of October 31, 2026, with a 145% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.57
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743578131
Dimensions9.55 × 6.61 × 3.98 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.55 mm6.61 mm1.57 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743578131
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,513 AUD|Low: $376 AUD|High: $1,524 AUD|Avg: $877 AUD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 7$376 AUD
Retailer 6$495 AUD
Retailer 2$695 AUD
Retailer 5$742 AUD
Retailer 8$755 AUD
Retailer 4$1,213 AUD
Retailer 3$1,338 AUD
MOH London$1,513 AUD

38 data points across 8 retailers

11 retailers$495 AUD to $1,213 AUD

Retailer 1
-
$303 AUD
$213 USD
Price last confirmed 33 days ago
Retailer 2
-
$352 AUD
$247 USD
View
Price last confirmed 37 days ago
Retailer 3
-
$372 AUD
$261 USD
View
Price last confirmed 32 days ago
B
Retailer 4
-
$495 AUD
$348 USD
View
B+
Retailer 5
-
$695 AUD
£385 GBP
View
B+
Retailer 6
-
$742 AUD
$521 USD
View
B+
Retailer 7
-
$755 AUD
$530 USD
View
Retailer 8
-
$1,209 AUD
$849 USD
View
Price last confirmed 31 days ago
B
Retailer 9
-
$1,213 AUD
$852 USD
View
Retailer 10
-
$1,338 AUD
$940 USD
View
Price last confirmed 13 days ago
Most Expensive
MOH London
LG743578131 · Oct 21
$1,513 AUD
£837 GBP
View
Price last confirmed 11 days ago
10 more retailers have this diamond
Prices start from $495 AUDSave up to $717 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.

B+
1.57ct Oval
$495 AUD