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Heart|Natural|GIA

1.51ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 7568013726

Certificate GIA 7568013726

Diamond specifications and retailer prices

From £1,425 GBP
As of November 6, 2026
Save £2,577 GBP (64%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,002 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7568013726. Listed at 15 retailers as of November 5, 2026, with prices from £1,425 to £4,002, a £2,577 spread on the same certified stone. NZ Jewellers lists it at £4,002. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7568013726
Dimensions6.37 × 7.82 × 4.90 mm
L/W Ratio1.23
Top View
6.37 mm7.82 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7568013726
Side View
Table 59.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 62.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £4,002 GBP|Low: £1,425 GBP|High: £4,397 GBP|Avg: £2,260 GBP|-9.0%
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
Retailer 14
Retailer 15
November 6, 2026
Retailer 3£1,425 GBP
Retailer 13£1,729 GBP
Retailer 7£1,763 GBP
Retailer 6£1,850 GBP
Retailer 2£1,907 GBP
Retailer 11£1,914 GBP
Retailer 5£1,978 GBP
Retailer 9£1,981 GBP
Retailer 15£2,002 GBP
Retailer 8£2,019 GBP
Retailer 10£2,025 GBP
Retailer 12£2,072 GBP
Retailer 4£2,208 GBP
Retailer 14£3,344 GBP
NZ Jewellers£4,002 GBP

28 data points across 15 retailers

15 retailers£1,425 GBP to £4,002 GBP

A
Cheapest Retailer
-
£1,425 GBP
A
Retailer 2
-
£1,729 GBP
View
A
Retailer 3
-
£1,763 GBP
View
A
Retailer 4
-
£1,850 GBP
View
A
Retailer 5
-
£1,907 GBP
View
A
Retailer 6
-
£1,914 GBP
View
Retailer 7
-
£1,978 GBP
View
Price last confirmed 8 days ago
A
Retailer 8
-
£1,981 GBP
View
A
Retailer 9
-
£2,002 GBP
View
A
Retailer 10
-
£2,019 GBP
View
A
Retailer 11
-
£2,025 GBP
View
A
Retailer 12
-
£2,072 GBP
View
A
Retailer 13
-
£2,208 GBP
View
B
Retailer 14
-
£3,344 GBP
View
Most Expensive
B
NZ Jewellers
a9b072f7-7dd5-4077-81c6-f9b32936d801 · Nov 5
£4,002 GBP
$5,356 USD
View
14 more retailers have this diamond
Prices start from £1,425 GBPSave up to £2,577 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
£1,425 GBP