CaratHunter
Plans
Heart|Natural|GIA

1.51ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 2536656053

Certificate GIA 2536656053

Diamond specifications and retailer prices

From £3,411 GBP
As of November 4, 2026
Save £3,810 GBP (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £7,222 GBP at NZ Jewellers · As of November 5, 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 2536656053. Listed at 16 retailers as of November 4, 2026, with prices from £3,411 to £7,222, a £3,810 spread on the same certified stone. NZ Jewellers lists it at £7,222. 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
FluorescenceFaint
Crown angle35.52°
Pavilion angle43.36°
OriginNatural
Grading LabGIA
CertificateGIA 2536656053
Dimensions7.91 × 6.95 × 4.73 mm
L/W Ratio1.14
Top View
7.91 mm6.95 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2536656053
Side View
Table 58.0%Crown 35.52°Girdle: STK-VTKPavilion 43.36°Culet: NoneDepth 59.8%

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 4
Current: £7,222 GBP|Low: £3,009 GBP|High: £7,222 GBP|Avg: £4,578 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5£3,611 GBP
Retailer 6£3,912 GBP
Retailer 8£3,912 GBP
Retailer 9£3,912 GBP
Retailer 2£4,046 GBP
Retailer 7£4,106 GBP
Retailer 3£4,146 GBP
Retailer 10£4,378 GBP
Retailer 4£6,344 GBP
NZ Jewellers£7,222 GBP

42 data points across 10 retailers

16 retailers£3,411 GBP to £7,222 GBP

A
Cheapest Retailer
-
£3,411 GBP
A
Retailer 2
-
£3,611 GBP
View
Final sale: no returns
A
Retailer 3
-
£3,641 GBP
View
B+
Retailer 4
-
£3,912 GBP
View
B+
Retailer 5
-
£3,912 GBP
View
Retailer 6
-
£3,912 GBP
View
Price last confirmed 9 days ago
B+
Retailer 7
-
£4,046 GBP
View
B+
Retailer 8
-
£4,106 GBP
View
B+
Retailer 9
-
£4,146 GBP
View
B+
Retailer 10
-
£4,378 GBP
View
B+
Retailer 11
-
£4,378 GBP
View
B+
Retailer 12
-
£4,513 GBP
View
B+
Retailer 13
-
£4,520 GBP
View
Retailer 14
-
£4,764 GBP
View
Price last confirmed 15 days ago
B
Retailer 15
-
£6,344 GBP
View
Most Expensive
B
NZ Jewellers
528a9cc3-07a9-4b8d-9681-79e7814dd6f0 · Nov 5
£7,222 GBP
$9,666 USD
View
15 more retailers have this diamond
Prices start from £3,411 GBPSave up to £3,810 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
£3,411 GBP