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Heart|Natural|GIA

1.51ct K SI2 Heart Natural Diamond

VG • K/SI2 • GIA 7488034686

Certificate GIA 7488034686

Diamond specifications and retailer prices

From £1,471 GBP
As of November 5, 2026
Save £1,915 GBP (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,173 GBP at NZ Jewellers · As of September 28, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 7488034686. Listed at 15 retailers as of November 2, 2026, with a 130% 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
K
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.6°
Pavilion angle38.2°
OriginNatural
Grading LabGIA
CertificateGIA 7488034686
Dimensions8.02 × 7.02 × 4.01 mm
L/W Ratio1.14
Key to symbols
Feather, Twinning Wisp
Top View
8.02 mm7.02 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7488034686
Side View
Table 59.0%Crown 36.6°Girdle: MED-THKPavilion 38.2°Culet: NoneDepth 57.1%

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: Nov 5
Current: £4,041 GBP|Low: £1,463 GBP|High: £4,173 GBP|Avg: £2,239 GBP|-3.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 5£1,471 GBP
Retailer 2£1,595 GBP
Retailer 9£1,731 GBP
Retailer 8£1,933 GBP
Retailer 10£1,933 GBP
Retailer 7£2,022 GBP
Retailer 3£2,038 GBP
Retailer 4£2,046 GBP
Retailer 11£2,230 GBP
Retailer 6£3,386 GBP
NZ Jewellers£4,041 GBP

44 data points across 11 retailers

15 retailers£1,471 GBP to £3,386 GBP

A
Cheapest Retailer
-
£1,471 GBP
A
Retailer 2
-
£1,595 GBP
View
B+
Retailer 3
-
£1,731 GBP
View
Retailer 4
-
£1,933 GBP
View
Price last confirmed 11 days ago
Retailer 5
-
£1,933 GBP
View
Price last confirmed 12 days ago
Retailer 6
-
£1,996 GBP
View
Price last confirmed 39 days ago
Retailer 7
-
£2,022 GBP
View
Price last confirmed 12 days ago
B+
Retailer 8
-
£2,038 GBP
View
A
Retailer 9
-
£2,046 GBP
View
Retailer 10
-
£2,230 GBP
View
Price last confirmed 10 days ago
Retailer 11
-
£2,303 GBP
View
Price last confirmed 61 days ago
Retailer 12
-
£2,303 GBP
View
Price last confirmed 38 days ago
B
Retailer 13
-
£3,386 GBP
View
Retailer 14
-
£4,041 GBP
View
Price last confirmed 10 days ago
Most Expensive
NZ Jewellers
2818403f-ff57-435c-ae52-52e63dfee60a · Sep 28
£4,173 GBP
$5,586 USD
View
Price last confirmed 39 days ago
14 more retailers have this diamond
Prices start from £1,471 GBPSave up to £1,915 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
£1,471 GBP