Heart|Natural|GIA

1.51ct E SI1 Heart Natural Diamond

EX • E/SI1 • GIA 5546654705

Certificate GIA 5546654705

Diamond specifications and retailer prices

From £3,845 GBP
$5,152 USD
As of October 30, 2026
Save £3,341 GBP (46%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £7,186 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 E 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 5546654705. Listed at 9 retailers as of October 30, 2026, with prices from £3,845 to £7,186, a £3,341 spread on the same certified stone. NZ Jewellers lists it at £7,186. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.76°
Pavilion angle43.09°
OriginNatural
Grading LabGIA
CertificateGIA 5546654705
Dimensions6.57 × 7.83 × 4.99 mm
L/W Ratio1.19
Top View
6.57 mm7.83 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5546654705
Side View
Table 63.0%Crown 38.76°Girdle: THK-VTKPavilion 43.09°Culet: NoneDepth 63.7%

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: Oct 30
Current: £7,186 GBP|Low: £3,845 GBP|High: £7,354 GBP|Avg: £4,918 GBP|-2.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 11£3,845 GBP
Retailer 2£4,032 GBP
Retailer 7£4,135 GBP
Retailer 9£4,297 GBP
Retailer 10£4,297 GBP
Retailer 8£4,320 GBP
Retailer 12£4,379 GBP
Retailer 13£4,530 GBP
Retailer 3£4,729 GBP
Retailer 5£5,164 GBP
Retailer 4£5,591 GBP
Retailer 6£6,365 GBP
NZ Jewellers£7,186 GBP

35 data points across 13 retailers

9 retailers£3,845 GBP to £7,186 GBP

A
Cheapest Retailer
-
£3,845 GBP
$5,152 USD
A
Retailer 2
-
£4,032 GBP
View
A
Retailer 3
-
£4,135 GBP
$5,540 USD
View
A
Retailer 4
-
£4,297 GBP
$5,757 USD
View
A
Retailer 5
-
£4,297 GBP
$5,757 USD
View
Retailer 6
-
£4,320 GBP
A$8,905 AUD
View
Price last confirmed 13 days ago
A
Retailer 7
-
£4,379 GBP
$5,867 USD
View
B+
Retailer 8
-
£6,365 GBP
View
Most Expensive
B
NZ Jewellers
2000c503-6131-405e-84a0-61da46a0ca3b · Oct 30
£7,186 GBP
$9,629 USD
View
8 more retailers have this diamond
Prices start from £3,845 GBPSave up to £3,341 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
£3,845 GBP