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Round|Natural|GIA

1.64ct M IF Round Natural Diamond

EX • M/IF • GIA 6401476425

Certificate GIA 6401476425

Diamond specifications and retailer prices

From $5,485 AUD
As of November 1, 2026
Save $3,117 AUD (36%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $12,285 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.64ct natural round diamond

This 1.64ct natural round sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 6401476425. Listed at 12 retailers as of November 1, 2026, with a 57% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.64
Carat
M
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6401476425
Dimensions7.70 × 7.66 × 4.57 mm
L/W Ratio1.01
Top View
7.70 mm7.66 mm1.64 ctM / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6401476425
Side View
Table 58.0%CrownGirdle: MED-MEDPavilionCulet: NoneDepth 59.5%

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: $12,285 AUD|Low: $5,485 AUD|High: $12,285 AUD|Avg: $7,483 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 4$5,485 AUD
Retailer 5$6,388 AUD
Retailer 7$6,388 AUD
Retailer 9$6,388 AUD
Retailer 6$6,757 AUD
Retailer 8$7,371 AUD
Retailer 3$7,458 AUD
Retailer 2$8,602 AUD
NZ Jewellers$12,285 AUD

27 data points across 9 retailers

12 retailers$5,485 AUD to $8,602 AUD

A
Cheapest Retailer
-
$5,485 AUD
A
Retailer 2
-
$5,621 AUD
View
A
Retailer 3
-
$6,050 AUD
View
Retailer 4
-
$6,388 AUD
View
Price last confirmed 8 days ago
Retailer 5
-
$6,388 AUD
View
Price last confirmed 8 days ago
Retailer 6
-
$6,388 AUD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$6,757 AUD
View
Retailer 8
-
$7,371 AUD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$7,371 AUD
View
B+
Retailer 10
-
$7,458 AUD
View
B+
Retailer 11
-
$8,602 AUD
View
Most Expensive
NZ Jewellers
caa3ee22-6ea0-4fbf-87d5-cd9e7b606bdf · Oct 30
$12,285 AUD
$8,600 USD
View
Price last confirmed 7 days ago
11 more retailers have this diamond
Prices start from $5,485 AUDSave up to $3,117 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 Round
$5,485 AUD