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Heart|Natural|GIA

1.51ct F SI1 Heart Natural Diamond

VG • F/SI1 • GIA 6551629134

Certificate GIA 6551629134

Diamond specifications and retailer prices

From £3,119 GBP
HK$32,700 HKD
As of November 2, 2026
Save £3,415 GBP (52%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £7,742 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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551629134. Listed at 17 retailers as of November 1, 2026, with a 109% 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
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551629134
Dimensions6.72 × 7.82 × 4.99 mm
L/W Ratio1.16
Girdle conditionFaceted
Top View
6.72 mm7.82 mm1.51 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551629134
Side View
Table 56.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.8%

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 2
Current: £3,793 GBP|Low: £3,071 GBP|High: £6,818 GBP|Avg: £4,223 GBP|-3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 2, 2026
Retailer 8£3,119 GBP
Retailer 13£3,122 GBP
Retailer 12£3,293 GBP
Retailer 10£3,482 GBP
Retailer 15£3,515 GBP
Retailer 4£3,519 GBP
Retailer 3£3,547 GBP
Retailer 6£3,622 GBP
Retailer 1£3,793 GBP
Retailer 11£4,063 GBP
Retailer 7£4,454 GBP
Retailer 2£5,119 GBP
Retailer 9£5,127 GBP
Retailer 14£6,534 GBP
Retailer 5£6,550 GBP

25 data points across 15 retailers

17 retailers£3,119 GBP to £6,534 GBP

A
Cheapest Retailer
-
£3,119 GBP
HK$32,700 HKD
A
Retailer 2
-
£3,122 GBP
$4,190 USD
View
A
Retailer 3
-
£3,293 GBP
$4,419 USD
View
A
Retailer 4
-
£3,482 GBP
$4,673 USD
View
Final sale: no returns
A
Retailer 5
-
£3,515 GBP
€4,493 EUR
View
A
Retailer 6
-
£3,519 GBP
$4,722 USD
View
A
Retailer 7
-
£3,547 GBP
$4,760 USD
View
Retailer 8
-
£3,622 GBP
$4,860 USD
View
Price last confirmed 18 days ago
B+
Retailer 9
-
£3,793 GBP
$5,090 USD
View
B+
Retailer 10
-
£4,063 GBP
View
Retailer 11
-
£4,454 GBP
A$9,195 AUD
View
Price last confirmed 23 days ago
B+
Retailer 12
-
£4,765 GBP
A$9,838 AUD
View
B
Retailer 13
-
£5,119 GBP
ZAR 110,985 ZAR
View
B
Retailer 14
-
£5,127 GBP
$6,880 USD
View
B
Retailer 15
-
£6,534 GBP
View
Retailer 16
-
£6,550 GBP
$8,790 USD
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
5751a6e1-0656-4f28-9314-4eb3e3b90e49 · Sep 25
£7,742 GBP
$10,389 USD
View
Price last confirmed 38 days ago
16 more retailers have this diamond
Prices start from £3,119 GBPSave up to £3,415 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
£3,119 GBP