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Heart|Natural|GIA

1.51ct F SI1 Heart Natural Diamond

ID • F/SI1 • GIA 5232690820

Certificate GIA 5232690820

Diamond specifications and retailer prices

From £3,486 GBP
$4,678 USD
As of November 2, 2026
Save £2,990 GBP (46%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £6,476 GBP at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5232690820. Listed at 9 retailers as of October 30, 2026, with prices from £3,486 to £6,476, a £2,990 spread on the same certified stone. NZ Jewellers lists it at £6,476. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.1°
Pavilion angle42.59°
OriginNatural
Grading LabGIA
CertificateGIA 5232690820
Dimensions6.89 × 7.98 × 4.86 mm
L/W Ratio1.16
Top View
6.89 mm7.98 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5232690820
Side View
Table 63.0%Crown 37.1°Girdle: Slightly Thick to Very ThickPavilion 42.59°Culet: NoneDepth 60.9%

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 2
Current: £6,476 GBP|Low: £3,486 GBP|High: £6,575 GBP|Avg: £4,381 GBP|-1.5%
NZ Jewellers
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 10£3,486 GBP
Retailer 2£3,623 GBP
Retailer 8£3,637 GBP
Retailer 3£3,793 GBP
Retailer 6£3,872 GBP
Retailer 9£3,872 GBP
Retailer 11£3,963 GBP
Retailer 7£3,964 GBP
Retailer 12£4,245 GBP
Retailer 4£4,517 GBP
Retailer 5£6,168 GBP
NZ Jewellers£6,476 GBP

36 data points across 12 retailers

9 retailers£3,486 GBP to £6,476 GBP

A
Cheapest Retailer
-
£3,486 GBP
$4,678 USD
A
Retailer 2
-
£3,623 GBP
View
A
Retailer 3
-
£3,637 GBP
$4,880 USD
View
A
Retailer 4
-
£3,872 GBP
$5,196 USD
View
B+
Retailer 5
-
£3,872 GBP
$5,196 USD
View
Retailer 6
-
£3,963 GBP
A$8,182 AUD
View
Price last confirmed 23 days ago
B+
Retailer 7
-
£3,964 GBP
$5,320 USD
View
B
Retailer 8
-
£6,168 GBP
View
Most Expensive
B
NZ Jewellers
92849da8-4f48-4f96-9700-94ee609a272c · Oct 30
£6,476 GBP
$8,691 USD
View
8 more retailers have this diamond
Prices start from £3,486 GBPSave up to £2,990 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
£3,486 GBP