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Heart|Natural|GIA

1.64ct D SI2 Heart Natural Diamond

VG • D/SI2 • GIA 6515713856

Certificate GIA 6515713856

Diamond specifications and retailer prices

From £3,510 GBP
$4,703 USD
As of October 31, 2026
Save £3,341 GBP (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £7,767 GBP at NZ Jewellers · As of October 24, 2026
View at NZ Jewellers

About this 1.64ct natural heart diamond

This 1.64ct natural heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6515713856. Listed at 14 retailers as of October 26, 2026, with a 95% 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

1.64
Carat
D
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6515713856
Dimensions8.10 × 6.94 × 4.89 mm
L/W Ratio1.17
Top View
8.10 mm6.94 mm1.64 ctD / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6515713856
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 60.4%

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: Oct 31
Current: £7,767 GBP|Low: £3,236 GBP|High: £7,767 GBP|Avg: £4,770 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 27, 2026
Retailer 15£3,510 GBP
Retailer 3£3,562 GBP
Retailer 4£3,663 GBP
Retailer 16£3,883 GBP
Retailer 5£4,207 GBP
Retailer 12£4,207 GBP
Retailer 13£4,207 GBP
Retailer 10£4,432 GBP
Retailer 17£4,441 GBP
Retailer 7£4,739 GBP
Retailer 8£4,739 GBP
Retailer 6£4,896 GBP
Retailer 2£4,901 GBP
Retailer 11£5,047 GBP
Retailer 9£5,832 GBP
Retailer 14£6,851 GBP
NZ Jewellers£7,767 GBP

31 data points across 17 retailers

14 retailers£3,510 GBP to £6,851 GBP

A
Cheapest Retailer
-
£3,510 GBP
$4,703 USD
A
Retailer 2
-
£3,562 GBP
$4,773 USD
View
A
Retailer 3
-
£3,663 GBP
$4,908 USD
View
A
Retailer 4
-
£4,207 GBP
$5,637 USD
View
A
Retailer 5
-
£4,207 GBP
$5,637 USD
View
B+
Retailer 6
-
£4,432 GBP
View
B+
Retailer 7
-
£4,441 GBP
$5,950 USD
View
B+
Retailer 8
-
£4,739 GBP
$6,350 USD
View
B+
Retailer 9
-
£4,739 GBP
$6,350 USD
View
B+
Retailer 10
-
£4,896 GBP
$6,560 USD
View
B+
Retailer 11
-
£4,901 GBP
$6,567 USD
View
B+
Retailer 12
-
£5,047 GBP
€6,440 EUR
View
B+
Retailer 13
-
£6,851 GBP
View
Most Expensive
NZ Jewellers
51753480-c4a3-4b05-8d7d-e40f78589f03 · Oct 24
£7,767 GBP
$10,407 USD
View
Price last confirmed 8 days ago
13 more retailers have this diamond
Prices start from £3,510 GBPSave up to £3,341 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
1.64ct Heart
£3,510 GBP