Heart|Natural|GIA

1.51ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 5232493398

Certificate GIA 5232493398

Diamond specifications and retailer prices

From £5,679 GBP
As of November 5, 2026
Save £6,526 GBP (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £12,205 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 5232493398. Listed at 17 retailers as of November 5, 2026, with prices from £5,679 to £12,205, a £6,526 spread on the same certified stone. NZ Jewellers lists it at £12,205. 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 5232493398
Dimensions7.25 × 8.28 × 4.51 mm
L/W Ratio1.14
Top View
7.25 mm8.28 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5232493398
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 54.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £12,205 GBP|Low: £5,714 GBP|High: £12,205 GBP|Avg: £7,711 GBP
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
November 7, 2026
Retailer 10£5,714 GBP
Retailer 3£6,102 GBP
Retailer 12£6,153 GBP
Retailer 6£6,288 GBP
Retailer 13£6,611 GBP
Retailer 11£6,713 GBP
Retailer 9£6,742 GBP
Retailer 2£6,765 GBP
Retailer 4£7,628 GBP
Retailer 5£8,034 GBP
Retailer 7£8,903 GBP
Retailer 8£10,143 GBP
NZ Jewellers£12,205 GBP

46 data points across 13 retailers

17 retailers£5,679 GBP to £12,205 GBP

B+
Cheapest Retailer
-
£5,679 GBP
B+
Retailer 2
-
£5,714 GBP
View
B
Retailer 3
-
£5,997 GBP
View
B
Retailer 4
-
£6,070 GBP
View
Retailer 5
-
£6,102 GBP
View
Price last confirmed 9 days ago
Retailer 6
-
£6,153 GBP
View
Price last confirmed 8 days ago
B
Retailer 7
-
£6,288 GBP
View
B
Retailer 8
-
£6,611 GBP
View
B
Retailer 9
-
£6,713 GBP
View
Retailer 10
-
£6,742 GBP
View
Price last confirmed 15 days ago
B
Retailer 11
-
£6,765 GBP
View
B
Retailer 12
-
£7,015 GBP
View
B
Retailer 13
-
£7,628 GBP
View
Retailer 14
-
£8,034 GBP
View
Price last confirmed 15 days ago
B
Retailer 15
-
£8,903 GBP
View
B
Retailer 16
-
£10,143 GBP
View
Most Expensive
B
NZ Jewellers
63285d76-08ad-4533-9be1-d0263cd1875d · Nov 5
£12,205 GBP
$16,336 USD
View
16 more retailers have this diamond
Prices start from £5,679 GBPSave up to £6,526 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
£5,679 GBP