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Heart|Natural|GIA

1.51ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 2546905514

Certificate GIA 2546905514

Diamond specifications and retailer prices

From £2,238 GBP
As of November 6, 2026
Save £2,711 GBP (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £5,509 GBP at NZ Jewellers · As of October 21, 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2546905514. Listed at 11 retailers as of November 2, 2026, with a 121% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2546905514
Dimensions6.86 × 7.86 × 4.65 mm
L/W Ratio1.15
Top View
6.86 mm7.86 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2546905514
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.1%

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 6
Current: £5,509 GBP|Low: £2,208 GBP|High: £5,509 GBP|Avg: £3,375 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6£2,238 GBP
Retailer 2£2,251 GBP
Retailer 9£2,376 GBP
Retailer 7£2,484 GBP
Retailer 8£2,650 GBP
Retailer 3£3,009 GBP
Retailer 10£3,162 GBP
Retailer 11£3,162 GBP
Retailer 4£3,396 GBP
Retailer 5£4,949 GBP
NZ Jewellers£5,509 GBP

45 data points across 11 retailers

11 retailers£2,238 GBP to £4,949 GBP

A
Cheapest Retailer
-
£2,238 GBP
A
Retailer 2
-
£2,251 GBP
View
A
Retailer 3
-
£2,376 GBP
View
Final sale: no returns
A
Retailer 4
-
£2,484 GBP
View
A
Retailer 5
-
£2,650 GBP
View
Retailer 6
-
£3,009 GBP
View
Price last confirmed 12 days ago
Retailer 7
-
£3,162 GBP
View
Price last confirmed 16 days ago
Retailer 8
-
£3,162 GBP
View
Price last confirmed 16 days ago
A
Retailer 9
-
£3,396 GBP
View
B+
Retailer 10
-
£4,949 GBP
View
Most Expensive
NZ Jewellers
2e8e5b83-7152-4758-8d05-1ee9688ffa17 · Oct 21
£5,509 GBP
$7,374 USD
View
Price last confirmed 16 days ago
10 more retailers have this diamond
Prices start from £2,238 GBPSave up to £2,711 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
£2,238 GBP