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Heart|Natural|GIA

1.51ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 6532728042

Certificate GIA 6532728042

Diamond specifications and retailer prices

From £2,156 GBP
HK$22,600 HKD
As of November 1, 2026
Save £2,694 GBP (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £5,052 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6532728042. Listed at 15 retailers as of November 1, 2026, with a 125% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6532728042
Dimensions6.85 × 7.74 × 4.82 mm
L/W Ratio1.13
Top View
6.85 mm7.74 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6532728042
Side View
Table 57.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £2,809 GBP|Low: £2,137 GBP|High: £4,908 GBP|Avg: £2,947 GBP|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 4£2,156 GBP
Retailer 6£2,476 GBP
Retailer 7£2,552 GBP
Retailer 5£2,622 GBP
Retailer 8£2,677 GBP
Retailer 9£2,712 GBP
Retailer 1£2,809 GBP
Retailer 2£2,966 GBP
Retailer 3£4,849 GBP

40 data points across 9 retailers

15 retailers£2,156 GBP to £4,849 GBP

A
Cheapest Retailer
-
£2,156 GBP
HK$22,600 HKD
A
Retailer 2
-
£2,476 GBP
$3,323 USD
View
A
Retailer 3
-
£2,552 GBP
$3,424 USD
View
A
Retailer 4
-
£2,622 GBP
$3,518 USD
View
A
Retailer 5
-
£2,677 GBP
$3,592 USD
View
Final sale: no returns
A
Retailer 6
-
£2,712 GBP
A$5,598 AUD
View
Retailer 7
-
£2,714 GBP
SGD 4,922 SGD
View
Price last confirmed 7 days ago
A
Retailer 8
-
£2,809 GBP
View
Retailer 9
-
£2,900 GBP
$3,891 USD
View
Price last confirmed 17 days ago
Retailer 10
-
£2,900 GBP
$3,891 USD
View
Price last confirmed 15 days ago
A
Retailer 11
-
£2,966 GBP
View
Retailer 12
-
£3,011 GBP
$4,041 USD
View
Price last confirmed 16 days ago
Retailer 13
-
£3,346 GBP
$4,490 USD
View
Price last confirmed 14 days ago
B
Retailer 14
-
£4,849 GBP
View
Most Expensive
NZ Jewellers
750cbaa0-97f9-4cd3-94da-a0c5874a4cda · Oct 18
£5,052 GBP
$6,780 USD
View
Price last confirmed 15 days ago
14 more retailers have this diamond
Prices start from £2,156 GBPSave up to £2,694 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
£2,156 GBP