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Heart|Natural|GIA

0.64ct D SI1 Heart Natural Diamond

ID • D/SI1 • GIA 6532692166

Certificate GIA 6532692166

Diamond specifications and retailer prices

From $1,231 AUD
$865 USD
As of November 2, 2026
Save $1,215 AUD (50%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,190 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 0.64ct natural heart diamond

This 0.64ct natural heart sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6532692166. Listed at 15 retailers as of November 1, 2026, with a 99% 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

0.64
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6532692166
Dimensions5.45 × 6.01 × 3.42 mm
L/W Ratio1.10
Top View
5.45 mm6.01 mm0.64 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6532692166
Side View
Table 57.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 56.9%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: $1,402 AUD|Low: $1,002 AUD|High: $2,477 AUD|Avg: $1,737 AUD|+6.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 7$1,231 AUD
Retailer 4$1,338 AUD
Retailer 1$1,402 AUD
Retailer 9$1,496 AUD
Retailer 6$1,630 AUD
Retailer 3$1,880 AUD
Retailer 5$1,995 AUD
Retailer 8$2,009 AUD
Retailer 2$2,446 AUD

46 data points across 9 retailers

15 retailers$1,231 AUD to $2,446 AUD

B+
Cheapest Retailer
-
$1,231 AUD
$865 USD
Final sale: no returns
Retailer 2
-
$1,335 AUD
$938 USD
View
Price last confirmed 32 days ago
B+
Retailer 3
-
$1,338 AUD
$940 USD
View
B+
Retailer 4
-
$1,350 AUD
$948 USD
View
Retailer 5
-
$1,387 AUD
$974 USD
View
Price last confirmed 32 days ago
B+
Retailer 6
-
$1,402 AUD
£776 GBP
View
B+
Retailer 7
-
$1,496 AUD
$1,051 USD
View
Retailer 8
-
$1,542 AUD
$1,083 USD
View
Price last confirmed 34 days ago
B+
Retailer 9
-
$1,587 AUD
$1,115 USD
View
B+
Retailer 10
-
$1,630 AUD
£902 GBP
View
B+
Retailer 11
-
$1,880 AUD
€1,258 EUR
View
B+
Retailer 12
-
$1,995 AUD
ZAR 22,638 ZAR
View
Retailer 13
-
$2,009 AUD
View
Price last confirmed 29 days ago
B
Retailer 14
-
$2,446 AUD
£1,353 GBP
View
Most Expensive
NZ Jewellers
9248833f-a0d7-401a-98b0-a1383e5d2bcf · Sep 30
$4,190 AUD
$2,943 USD
View
Price last confirmed 33 days ago
14 more retailers have this diamond
Prices start from $1,231 AUDSave up to $1,215 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.

B+
0.64ct Heart
$1,231 AUD