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Heart|Natural|GIA

1.51ct G SI2 Heart Natural Diamond

VG • G/SI2 • GIA 6541179721

Certificate GIA 6541179721

Diamond specifications and retailer prices

From £2,350 GBP
HK$24,600 HKD
As of November 1, 2026
Save £2,883 GBP (55%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £5,787 GBP at NZ Jewellers · As of September 25, 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 SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6541179721. Listed at 13 retailers as of November 1, 2026, with a 123% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.7°
OriginNatural
Grading LabGIA
CertificateGIA 6541179721
Dimensions7.81 × 6.60 × 4.97 mm
L/W Ratio1.18
Top View
7.81 mm6.60 mm1.51 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541179721
Side View
Table 58.0%CrownGirdle: STK-VTKPavilion 40.7°Culet: NoneDepth 63.7%

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: £2,656 GBP|Low: £2,331 GBP|High: £5,415 GBP|Avg: £3,275 GBP|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 6£2,350 GBP
Retailer 7£2,352 GBP
Retailer 2£2,516 GBP
Retailer 8£2,529 GBP
Retailer 1£2,656 GBP
Retailer 11£2,858 GBP
Retailer 4£3,032 GBP
Retailer 9£3,120 GBP
Retailer 3£3,472 GBP
Retailer 10£4,894 GBP
Retailer 5£5,233 GBP

36 data points across 11 retailers

13 retailers£2,350 GBP to £5,233 GBP

A
Cheapest Retailer
-
£2,350 GBP
HK$24,600 HKD
A
Retailer 2
-
£2,352 GBP
$3,151 USD
View
A
Retailer 3
-
£2,516 GBP
$3,371 USD
View
A
Retailer 4
-
£2,529 GBP
$3,389 USD
View
A
Retailer 5
-
£2,656 GBP
$3,559 USD
View
Final sale: no returns
A
Retailer 6
-
£2,804 GBP
A$5,780 AUD
View
A
Retailer 7
-
£2,858 GBP
$3,830 USD
View
A
Retailer 8
-
£3,032 GBP
View
A
Retailer 9
-
£3,120 GBP
SGD 5,650 SGD
View
B+
Retailer 10
-
£3,472 GBP
A$7,158 AUD
View
Retailer 11
-
£4,894 GBP
$6,558 USD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£5,233 GBP
View
Most Expensive
NZ Jewellers
a3838425-575f-43a2-919a-eba1d071daa9 · Sep 25
£5,787 GBP
$7,754 USD
View
Price last confirmed 38 days ago
12 more retailers have this diamond
Prices start from £2,350 GBPSave up to £2,883 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
£2,350 GBP