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 $2,767 USD
As of October 28, 2026
Save $2,603 USD (48%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $5,370 USD at NZ Jewellers · As of October 27, 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 27, 2026, with prices from $2,767 to $5,370, a $2,603 spread on the same certified stone. NZ Jewellers lists it at $5,370. 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
Color
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: $5,370 USD|Low: $2,767 USD|High: $5,419 USD|Avg: $3,616 USD|-0.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 7$2,767 USD
Retailer 3$3,082 USD
Retailer 4$3,082 USD
Retailer 6$3,201 USD
Retailer 5$3,557 USD
Retailer 2$3,618 USD
Retailer 8$3,739 USD
NZ Jewellers$5,370 USD

31 data points across 8 retailers

7 retailers$2,767 USD to $5,370 USD

A
Cheapest Retailer
-
$2,767 USD
A
Retailer 2
-
$3,082 USD
View
A
Retailer 3
-
$3,082 USD
View
A
Retailer 4
-
$3,201 USD
View
A
Retailer 5
-
$3,557 USD
View
A
Retailer 6
-
$3,618 USD
€3,446 EUR
View
Most Expensive
B+
NZ Jewellers
5ca9c548-1c0e-4693-8692-9d34c7686e15 · Oct 27
$5,370 USD
View
6 more retailers have this diamond
Prices start from $2,767 USDSave up to $2,603 USD

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
$2,767 USD