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 $617 NZD
$348 USD
As of November 1, 2026
Save $1,260 NZD (67%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,877 NZD at MOH London · As of November 1, 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 November 1, 2026, with prices from $617 to $1,877, a $1,260 spread on the same certified stone. MOH London lists it at $1,877. 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: $1,877 NZD|Low: $468 NZD|High: $1,900 NZD|Avg: $1,093 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 7$468 NZD
Retailer 6$617 NZD
Retailer 2$867 NZD
Retailer 5$924 NZD
Retailer 8$940 NZD
Retailer 4$1,512 NZD
Retailer 3$1,668 NZD
MOH London$1,877 NZD

38 data points across 8 retailers

11 retailers$617 NZD to $1,877 NZD

Retailer 1
-
$378 NZD
$213 USD
Price last confirmed 33 days ago
Retailer 2
-
$438 NZD
$247 USD
View
Price last confirmed 37 days ago
Retailer 3
-
$463 NZD
$261 USD
View
Price last confirmed 33 days ago
B
Retailer 4
-
$617 NZD
$348 USD
View
B+
Retailer 5
-
$867 NZD
£385 GBP
View
B+
Retailer 6
-
$924 NZD
$521 USD
View
B+
Retailer 7
-
$940 NZD
$530 USD
View
Retailer 8
-
$1,506 NZD
$849 USD
View
Price last confirmed 32 days ago
B
Retailer 9
-
$1,512 NZD
$852 USD
View
Retailer 10
-
$1,668 NZD
$940 USD
View
Price last confirmed 14 days ago
Most Expensive
B
MOH London
LG743578131 · Nov 1
$1,877 NZD
£833 GBP
View
10 more retailers have this diamond
Prices start from $617 NZDSave up to $1,260 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.

B+
1.57ct Oval
$617 NZD