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Heart|Natural|GIA

1.51ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6561499420

Certificate GIA 6561499420

Diamond specifications and retailer prices

From £3,069 GBP
As of November 6, 2026
Save £4,011 GBP (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £7,080 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6561499420. Listed at 16 retailers as of November 5, 2026, with prices from £3,069 to £7,080, a £4,011 spread on the same certified stone. NZ Jewellers lists it at £7,080. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6561499420
Dimensions7.05 × 7.76 × 4.61 mm
L/W Ratio1.10
Girdle conditionFaceted
Top View
7.05 mm7.76 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561499420
Side View
Table 58.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 59.4%

Caratlytics Score

How it works →
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 6
Current: £7,080 GBP|Low: £3,021 GBP|High: £7,128 GBP|Avg: £4,380 GBP|-0.7%
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
Retailer 16
November 6, 2026
Retailer 3£3,069 GBP
Retailer 6£3,452 GBP
Retailer 2£3,516 GBP
Retailer 13£3,685 GBP
Retailer 14£3,739 GBP
Retailer 11£3,833 GBP
Retailer 7£3,882 GBP
Retailer 4£3,907 GBP
Retailer 8£3,946 GBP
Retailer 16£3,956 GBP
Retailer 9£3,967 GBP
Retailer 10£4,764 GBP
Retailer 12£5,165 GBP
Retailer 15£6,485 GBP
Retailer 5£6,649 GBP
NZ Jewellers£7,080 GBP

20 data points across 16 retailers

16 retailers£3,069 GBP to £7,080 GBP

A
Cheapest Retailer
-
£3,069 GBP
Retailer 2
-
£3,452 GBP
View
Price last confirmed 8 days ago
A
Retailer 3
-
£3,516 GBP
View
A
Retailer 4
-
£3,685 GBP
View
A
Retailer 5
-
£3,739 GBP
View
A
Retailer 6
-
£3,833 GBP
View
Retailer 7
-
£3,882 GBP
View
Price last confirmed 11 days ago
A
Retailer 8
-
£3,907 GBP
View
Final sale: no returns
A
Retailer 9
-
£3,946 GBP
View
B+
Retailer 10
-
£3,956 GBP
View
A
Retailer 11
-
£3,967 GBP
View
B+
Retailer 12
-
£4,764 GBP
View
B+
Retailer 13
-
£5,165 GBP
View
B
Retailer 14
-
£6,485 GBP
View
B
Retailer 15
-
£6,649 GBP
View
Most Expensive
B
NZ Jewellers
343583af-7775-4d7c-acc2-7fa32cb1b7b5 · Nov 5
£7,080 GBP
$9,477 USD
View
15 more retailers have this diamond
Prices start from £3,069 GBPSave up to £4,011 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
£3,069 GBP