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Radiant|Natural|IGI

1.57ct I SI1 Radiant Natural Diamond

VG • I/SI1 • IGI 770664057

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI 770664057

Diamond specifications and retailer prices

From $3,836 CAD
As of November 6, 2026
Save $4,701 CAD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,537 CAD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.57ct natural radiant diamond

This 1.57ct natural radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 770664057. Listed at 15 retailers as of November 5, 2026, with prices from $3,836 to $8,537, a $4,701 spread on the same certified stone. NZ Jewellers lists it at $8,537. 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
I
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.8°
Pavilion angle35.2°
OriginNatural
Grading LabIGI
CertificateIGI 770664057
Dimensions7.67 × 5.83 × 4.03 mm
L/W Ratio1.32
Girdle conditionFaceted
Culet sizePointed
Top View
7.67 mm5.83 mm1.57 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 770664057
Side View
Table 72.0%Crown 40.8°Girdle: MED-STKPavilion 35.2°Culet: NoneDepth 69.1%

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: Nov 6
Current: $5,162 CAD|Low: $3,836 CAD|High: $8,281 CAD|Avg: $5,535 CAD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 2$3,836 CAD
Retailer 3$4,623 CAD
Retailer 1$5,162 CAD
Retailer 4$5,705 CAD
Retailer 5$5,981 CAD
Retailer 6$8,172 CAD

28 data points across 6 retailers

15 retailers$3,836 CAD to $8,537 CAD

A
Cheapest Retailer
-
$3,836 CAD
A
Retailer 2
-
$4,351 CAD
View
Retailer 3
-
$4,571 CAD
View
Price last confirmed 95 days ago
A
Retailer 4
-
$4,623 CAD
View
B+
Retailer 5
-
$4,719 CAD
View
B+
Retailer 6
-
$4,901 CAD
View
Retailer 7
-
$4,901 CAD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$5,089 CAD
View
B+
Retailer 9
-
$5,103 CAD
View
A
Retailer 10
-
$5,162 CAD
View
B+
Retailer 11
-
$5,655 CAD
View
A
Retailer 12
-
$5,705 CAD
View
B+
Retailer 13
-
$5,981 CAD
View
B+
Retailer 14
-
$8,172 CAD
View
Most Expensive
B+
NZ Jewellers
0ecf2490-5f9c-44b3-8ce7-9bf1aa529f16 · Nov 5
$8,537 CAD
$6,069 USD
View
14 more retailers have this diamond
Prices start from $3,836 CADSave up to $4,701 CAD

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 Radiant
$3,836 CAD