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Round|Natural|IGI

1.57ct E I1 Round Natural Diamond

EX • E/I1 • IGI 175579856

Shape and cutting style on the report: Round brilliant

Certificate IGI 175579856

Diamond specifications and retailer prices

From $3,939 AUD
$2,767 USD
As of October 28, 2026
Save $3,705 AUD (48%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $7,644 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.57ct natural round diamond

This 1.57ct natural round sits in the one-and-a-half to two carat band, graded E colour (colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI 175579856. Listed at 7 retailers as of October 28, 2026, with prices from $3,939 to $7,644, a $3,705 spread on the same certified stone. NZ Jewellers lists it at $7,644. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57
Carat
E
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.4°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 175579856
Dimensions7.31 × 7.37 × 4.66 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
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Top View
7.31 mm7.37 mm1.57 ctE / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 175579856
Side View
Table 59.5%Crown 36.4°Girdle: MED-STKPavilion 41.6°CuletDepth 63.3%

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: Oct 28
Current: $7,644 AUD|Low: $3,939 AUD|High: $7,713 AUD|Avg: $5,147 AUD|-0.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 7$3,939 AUD
Retailer 3$4,387 AUD
Retailer 4$4,387 AUD
Retailer 6$4,556 AUD
Retailer 5$5,063 AUD
Retailer 2$5,150 AUD
Retailer 8$5,322 AUD
NZ Jewellers$7,644 AUD

31 data points across 8 retailers

7 retailers$3,939 AUD to $7,644 AUD

A
Cheapest Retailer
-
$3,939 AUD
$2,767 USD
A
Retailer 2
-
$4,387 AUD
$3,082 USD
View
A
Retailer 3
-
$4,387 AUD
$3,082 USD
View
A
Retailer 4
-
$4,556 AUD
$3,201 USD
View
A
Retailer 5
-
$5,063 AUD
$3,557 USD
View
A
Retailer 6
-
$5,150 AUD
€3,446 EUR
View
Most Expensive
B+
NZ Jewellers
5ca9c548-1c0e-4693-8692-9d34c7686e15 · Oct 30
$7,644 AUD
$5,370 USD
View
6 more retailers have this diamond
Prices start from $3,939 AUDSave up to $3,705 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
$3,939 AUD