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Heart|Natural|GIA

1.64ct J SI1 Heart Natural Diamond

VG • J/SI1 • GIA 2528975077

Certificate GIA 2528975077

Diamond specifications and retailer prices

From $5,506 AUD
As of November 4, 2026
Save $5,728 AUD (51%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $11,234 AUD at NZ Jewellers · As of November 5, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2528975077. Listed at 20 retailers as of November 4, 2026, with prices from $5,506 to $11,234, a $5,728 spread on the same certified stone. NZ Jewellers lists it at $11,234. 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2528975077
Dimensions7.76 × 7.26 × 4.48 mm
L/W Ratio1.07
Top View
7.76 mm7.26 mm1.64 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2528975077
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.7%

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 4
Current: $6,853 AUD|Low: $5,953 AUD|High: $10,394 AUD|Avg: $7,253 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 7$5,953 AUD
Retailer 4$6,171 AUD
Retailer 3$6,532 AUD
Retailer 1$6,853 AUD
Retailer 8$6,877 AUD
Retailer 5$7,255 AUD
Retailer 6$7,868 AUD
Retailer 2$10,215 AUD

36 data points across 8 retailers

20 retailers$5,506 AUD to $11,234 AUD

B+
Cheapest Retailer
-
$5,506 AUD
B+
Retailer 2
-
$5,675 AUD
View
B+
Retailer 3
-
$5,766 AUD
View
B+
Retailer 4
-
$5,953 AUD
View
Final sale: no returns
B+
Retailer 5
-
$6,076 AUD
View
B+
Retailer 6
-
$6,113 AUD
View
B+
Retailer 7
-
$6,171 AUD
View
B+
Retailer 8
-
$6,395 AUD
View
B+
Retailer 9
-
$6,449 AUD
View
B+
Retailer 10
-
$6,449 AUD
View
Retailer 11
-
$6,449 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$6,532 AUD
View
B
Retailer 13
-
$6,778 AUD
View
B
Retailer 14
-
$6,853 AUD
View
Retailer 15
-
$6,877 AUD
View
Price last confirmed 29 days ago
B
Retailer 16
-
$7,255 AUD
View
B
Retailer 17
-
$7,440 AUD
View
B
Retailer 18
-
$7,868 AUD
View
B
Retailer 19
-
$10,215 AUD
View
Most Expensive
B
NZ Jewellers
1c568664-3667-46cb-8b10-3955c74db087 · Nov 5
$11,234 AUD
$7,719 USD
View
19 more retailers have this diamond
Prices start from $5,506 AUDSave up to $5,728 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+
1.64ct Heart
$5,506 AUD