Heart|Natural|GIA

1.51ct K SI2 Heart Natural Diamond

FR • K/SI2 • GIA 2457516258

Certificate GIA 2457516258

Diamond specifications and retailer prices

From £1,953 GBP
As of November 4, 2026
13 retailers carry this diamond
Most expensive: £4,324 GBP at NZ Jewellers · As of October 18, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2457516258. Listed at 13 retailers as of November 4, 2026. 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
Fair
Cut (retailer stated)

Specifications

Cut (retailer stated)Fair
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2457516258
Dimensions6.65 × 7.96 × 4.74 mm
L/W Ratio1.20
Top View
6.65 mm7.96 mm1.51 ctK / SI2
OriginNatural
CutFair
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2457516258
Side View
Table 52.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 59.6%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 4
Current: £1,953 GBP|Low: £1,627 GBP|High: £4,200 GBP|Avg: £2,636 GBP|+20.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 4, 2026
Retailer 1£1,953 GBP
Retailer 9£2,014 GBP
Retailer 2£2,249 GBP
Retailer 7£2,249 GBP
Retailer 11£2,267 GBP
Retailer 5£2,501 GBP
Retailer 4£2,566 GBP
Retailer 3£2,672 GBP
Retailer 10£2,953 GBP
Retailer 8£3,581 GBP
Retailer 6£4,173 GBP

40 data points across 11 retailers

13 retailers

Retailer 1
-
£1,904 GBP
Price last confirmed 20 days ago
B+
Retailer 2
-
£1,953 GBP
View
Retailer 3
-
£2,014 GBP
View
Price last confirmed 17 days ago
Retailer 4
-
£2,249 GBP
View
Price last confirmed 17 days ago
Retailer 5
-
£2,249 GBP
View
Price last confirmed 21 days ago
Retailer 6
-
£2,267 GBP
View
Price last confirmed 19 days ago
Retailer 7
-
£2,291 GBP
View
Price last confirmed 22 days ago
Retailer 8
-
£2,335 GBP
View
Price last confirmed 21 days ago
Retailer 9
-
£2,566 GBP
View
Price last confirmed 16 days ago
Retailer 10
-
£2,595 GBP
View
Price last confirmed 18 days ago
Retailer 11
-
£3,581 GBP
View
Price last confirmed 18 days ago
Retailer 12
-
£4,173 GBP
View
Price last confirmed 20 days ago
Most Expensive
NZ Jewellers
ef507fc5-24aa-482a-a62b-d7e834340f75 · Oct 18
£4,324 GBP
$5,788 USD
View
Price last confirmed 19 days ago
12 more retailers have this diamond
Prices start from £1,953 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.

B+
1.51ct Heart
£1,953 GBP