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Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

VG • I/SI2 • GIA 2557140157

Certificate GIA 2557140157

Diamond specifications and retailer prices

From £2,442 GBP
$3,272 USD
As of November 1, 2026
Save £2,841 GBP (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £5,792 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557140157. Listed at 14 retailers as of November 1, 2026, with a 116% 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

1.51
Carat
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557140157
Dimensions6.99 × 7.88 × 4.63 mm
L/W Ratio1.13
Top View
6.99 mm7.88 mm1.51 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557140157
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.7%

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 1
Current: £2,465 GBP|Low: £2,413 GBP|High: £5,369 GBP|Avg: £3,335 GBP|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 11£2,442 GBP
Retailer 1£2,465 GBP
Retailer 8£2,593 GBP
Retailer 6£2,676 GBP
Retailer 2£2,728 GBP
Retailer 4£2,739 GBP
Retailer 10£2,861 GBP
Retailer 9£2,955 GBP
Retailer 7£3,275 GBP
Retailer 5£4,276 GBP
Retailer 3£5,058 GBP
Retailer 12£5,283 GBP

35 data points across 12 retailers

14 retailers£2,442 GBP to £5,283 GBP

A
Cheapest Retailer
-
£2,442 GBP
$3,272 USD
A
Retailer 2
-
£2,465 GBP
HK$25,800 HKD
View
A
Retailer 3
-
£2,593 GBP
$3,475 USD
View
A
Retailer 4
-
£2,676 GBP
$3,586 USD
View
Final sale: no returns
A
Retailer 5
-
£2,728 GBP
$3,655 USD
View
A
Retailer 6
-
£2,739 GBP
$3,670 USD
View
A
Retailer 7
-
£2,861 GBP
A$5,899 AUD
View
A
Retailer 8
-
£2,955 GBP
$3,960 USD
View
B+
Retailer 9
-
£3,275 GBP
View
B+
Retailer 10
-
£3,390 GBP
A$6,988 AUD
View
B
Retailer 11
-
£4,276 GBP
$5,730 USD
View
Retailer 12
-
£5,058 GBP
$6,777 USD
View
Price last confirmed 9 days ago
B
Retailer 13
-
£5,283 GBP
View
Most Expensive
NZ Jewellers
d85614ba-f21d-4946-a9ce-9e008d9e8309 · Sep 25
£5,792 GBP
$7,760 USD
View
Price last confirmed 38 days ago
13 more retailers have this diamond
Prices start from £2,442 GBPSave up to £2,841 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
1.51ct Heart
£2,442 GBP