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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 $6,695 AUD
$4,703 USD
As of October 31, 2026
Save $6,373 AUD (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $14,815 AUD 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: $14,815 AUD|Low: $6,173 AUD|High: $14,815 AUD|Avg: $9,098 AUD
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$6,695 AUD
Retailer 3$6,795 AUD
Retailer 4$6,987 AUD
Retailer 16$7,407 AUD
Retailer 5$8,025 AUD
Retailer 12$8,025 AUD
Retailer 13$8,025 AUD
Retailer 10$8,454 AUD
Retailer 17$8,470 AUD
Retailer 7$9,040 AUD
Retailer 8$9,040 AUD
Retailer 6$9,339 AUD
Retailer 2$9,349 AUD
Retailer 11$9,626 AUD
Retailer 9$11,125 AUD
Retailer 14$13,068 AUD
NZ Jewellers$14,815 AUD

31 data points across 17 retailers

14 retailers$6,695 AUD to $13,068 AUD

A
Cheapest Retailer
-
$6,695 AUD
$4,703 USD
A
Retailer 2
-
$6,795 AUD
$4,773 USD
View
A
Retailer 3
-
$6,987 AUD
$4,908 USD
View
A
Retailer 4
-
$8,025 AUD
$5,637 USD
View
A
Retailer 5
-
$8,025 AUD
$5,637 USD
View
B+
Retailer 6
-
$8,454 AUD
£4,676 GBP
View
B+
Retailer 7
-
$8,470 AUD
$5,950 USD
View
B+
Retailer 8
-
$9,040 AUD
$6,350 USD
View
B+
Retailer 9
-
$9,040 AUD
$6,350 USD
View
B+
Retailer 10
-
$9,339 AUD
$6,560 USD
View
B+
Retailer 11
-
$9,349 AUD
$6,567 USD
View
B+
Retailer 12
-
$9,626 AUD
€6,440 EUR
View
B+
Retailer 13
-
$13,068 AUD
£7,228 GBP
View
Most Expensive
NZ Jewellers
51753480-c4a3-4b05-8d7d-e40f78589f03 · Oct 24
$14,815 AUD
$10,407 USD
View
Price last confirmed 8 days ago
13 more retailers have this diamond
Prices start from $6,695 AUDSave up to $6,373 AUD

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
$6,695 AUD