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Heart|Natural|GIA

1.51ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 1565167954

Certificate GIA 1565167954

Diamond specifications and retailer prices

From £1,284 GBP
As of November 4, 2026
Save £1,926 GBP (60%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,210 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 1565167954. Listed at 15 retailers as of November 4, 2026, with prices from £1,284 to £3,210, a £1,926 spread on the same certified stone. NZ Jewellers lists it at £3,210. 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1565167954
Dimensions6.95 × 7.86 × 4.67 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Indented Natural
Top View
6.95 mm7.86 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1565167954
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 59.4%

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 4
Current: £3,210 GBP|Low: £1,275 GBP|High: £3,329 GBP|Avg: £1,685 GBP|-3.6%
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 5£1,284 GBP
Retailer 4£1,371 GBP
Retailer 3£1,390 GBP
Retailer 14£1,390 GBP
Retailer 7£1,420 GBP
Retailer 12£1,422 GBP
Retailer 13£1,440 GBP
Retailer 15£1,455 GBP
Retailer 8£1,529 GBP
Retailer 2£1,559 GBP
Retailer 10£1,602 GBP
Retailer 6£1,605 GBP
Retailer 9£1,668 GBP
Retailer 11£2,682 GBP
NZ Jewellers£3,210 GBP

25 data points across 15 retailers

15 retailers£1,284 GBP to £3,210 GBP

A
Cheapest Retailer
-
£1,284 GBP
Final sale: no returns
A
Retailer 2
-
£1,371 GBP
View
A
Retailer 3
-
£1,390 GBP
View
Retailer 4
-
£1,390 GBP
View
Price last confirmed 8 days ago
A
Retailer 5
-
£1,420 GBP
View
A
Retailer 6
-
£1,422 GBP
View
A
Retailer 7
-
£1,440 GBP
View
A
Retailer 8
-
£1,455 GBP
View
A
Retailer 9
-
£1,529 GBP
View
A
Retailer 10
-
£1,559 GBP
View
A
Retailer 11
-
£1,602 GBP
View
A
Retailer 12
-
£1,605 GBP
View
A
Retailer 13
-
£1,668 GBP
View
B+
Retailer 14
-
£2,682 GBP
View
Most Expensive
B+
NZ Jewellers
51c9b586-48e3-43bf-b868-bb551dea9293 · Nov 5
£3,210 GBP
$4,296 USD
View
14 more retailers have this diamond
Prices start from £1,284 GBPSave up to £1,926 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
£1,284 GBP