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Heart|Natural|IGI

1.57ct J SI1 Heart Natural Diamond

VG • J/SI1 • IGI 742527632

Shape and cutting style on the report: Heart brilliant

Certificate IGI 742527632

Diamond specifications and retailer prices

From £1,762 GBP
₹225,176 INR
As of November 2, 2026
Save £1,964 GBP (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,658 GBP at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.57ct natural heart diamond

This 1.57ct natural heart sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 742527632. Listed at 14 retailers as of November 1, 2026, with a 111% 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
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.8°
OriginNatural
Grading LabIGI
CertificateIGI 742527632
Dimensions6.65 × 8.19 × 4.92 mm
L/W Ratio1.23
Girdle conditionFaceted
Culet sizePointed
Top View
6.65 mm8.19 mm1.57 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 742527632
Side View
Table 62.0%Crown 35.2°Girdle: STK-THKPavilion 41.8°Culet: NoneDepth 60.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £1,762 GBP|Low: £1,758 GBP|High: £3,771 GBP|Avg: £2,425 GBP|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 1£1,762 GBP
Retailer 7£1,997 GBP
Retailer 6£2,061 GBP
Retailer 2£2,144 GBP
Retailer 3£2,425 GBP
Retailer 5£2,739 GBP
Retailer 4£3,726 GBP

30 data points across 7 retailers

14 retailers£1,762 GBP to £3,726 GBP

A
Cheapest Retailer
-
£1,762 GBP
₹225,176 INR
B+
Retailer 2
-
£1,995 GBP
$2,677 USD
View
B+
Retailer 3
-
£1,997 GBP
$2,680 USD
View
B+
Retailer 4
-
£2,061 GBP
$2,766 USD
View
A
Retailer 5
-
£2,144 GBP
View
Retailer 6
-
£2,228 GBP
$2,990 USD
View
Price last confirmed 25 days ago
Retailer 7
-
£2,228 GBP
$2,990 USD
View
Price last confirmed 25 days ago
Retailer 8
-
£2,314 GBP
$3,105 USD
View
Price last confirmed 32 days ago
B+
Retailer 9
-
£2,334 GBP
$3,133 USD
View
B+
Retailer 10
-
£2,425 GBP
View
Retailer 11
-
£2,571 GBP
$3,450 USD
View
Price last confirmed 34 days ago
B+
Retailer 12
-
£2,739 GBP
ZAR 59,377 ZAR
View
B
Retailer 13
-
£3,726 GBP
View
Most Expensive
NZ Jewellers
fc17d06e-797f-4cfc-ba76-2879ecdbce04 · Sep 30
£4,658 GBP
$6,251 USD
View
Price last confirmed 33 days ago
13 more retailers have this diamond
Prices start from £1,762 GBPSave up to £1,964 GBP

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 Heart
£1,762 GBP