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Heart|Natural|GIA

1.51ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 2526686872

Certificate GIA 2526686872

Diamond specifications and retailer prices

From £2,582 GBP
As of November 6, 2026
Save £2,776 GBP (52%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £6,295 GBP at Queensmith · As of October 28, 2026
View at Queensmith

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 2526686872. Listed at 15 retailers as of November 4, 2026, with a 108% 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2526686872
Dimensions7.98 × 7.03 × 4.71 mm
L/W Ratio1.14
Top View
7.98 mm7.03 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2526686872
Side View
Table 64.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.0%

Caratlytics Score

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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: £6,295 GBP|Low: £2,553 GBP|High: £6,381 GBP|Avg: £3,833 GBP|-1.3%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6£2,582 GBP
Retailer 2£2,747 GBP
Retailer 7£3,114 GBP
Retailer 4£3,277 GBP
Retailer 9£3,281 GBP
Retailer 3£3,417 GBP
Retailer 8£3,485 GBP
Retailer 5£5,358 GBP
Queensmith£6,295 GBP

40 data points across 9 retailers

15 retailers£2,582 GBP to £5,358 GBP

A
Cheapest Retailer
-
£2,582 GBP
A
Retailer 2
-
£2,747 GBP
View
A
Retailer 3
-
£3,114 GBP
View
Final sale: no returns
A
Retailer 4
-
£3,277 GBP
View
A
Retailer 5
-
£3,281 GBP
View
Retailer 6
-
£3,374 GBP
View
Price last confirmed 22 days ago
Retailer 7
-
£3,374 GBP
View
Price last confirmed 22 days ago
Retailer 8
-
£3,374 GBP
View
Price last confirmed 20 days ago
A
Retailer 9
-
£3,389 GBP
View
A
Retailer 10
-
£3,417 GBP
View
A
Retailer 11
-
£3,485 GBP
View
Retailer 12
-
£3,893 GBP
View
Price last confirmed 19 days ago
B+
Retailer 13
-
£5,358 GBP
View
Retailer 14
-
£5,878 GBP
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
2526686872 · Oct 28
£6,295 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from £2,582 GBPSave up to £2,776 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
£2,582 GBP