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Round|Natural|GIA

0.66ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2564425219

Certificate GIA 2564425219

Diamond specifications and retailer prices

From $822 AUD
HK$4,500 HKD
As of November 1, 2026
Save $2,591 AUD (76%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,413 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.66ct natural round diamond

This 0.66ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2564425219. Listed at 18 retailers as of October 30, 2026, with prices from $822 to $3,413, a $2,591 spread on the same certified stone. NZ Jewellers lists it at $3,413. 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

0.66
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2564425219
Dimensions5.58 × 5.62 × 3.44 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Crystal, Knot
Top View
5.58 mm5.62 mm0.66 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2564425219
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.5%

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: $3,413 AUD|Low: $822 AUD|High: $3,419 AUD|Avg: $1,289 AUD|-0.2%
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
Retailer 18
November 3, 2026
Retailer 10$822 AUD
Retailer 11$824 AUD
Retailer 18$963 AUD
Retailer 3$996 AUD
Retailer 8$1,033 AUD
Retailer 6$1,089 AUD
Retailer 5$1,097 AUD
Retailer 12$1,122 AUD
Retailer 7$1,129 AUD
Retailer 9$1,246 AUD
Retailer 15$1,269 AUD
Retailer 4$1,278 AUD
Retailer 2$1,280 AUD
Retailer 17$1,290 AUD
Retailer 13$1,397 AUD
Retailer 14$1,428 AUD
Retailer 16$1,979 AUD
NZ Jewellers$3,413 AUD

24 data points across 18 retailers

18 retailers$822 AUD to $3,413 AUD

A
Cheapest Retailer
-
$822 AUD
HK$4,500 HKD
A
Retailer 2
-
$824 AUD
₹54,965 INR
View
A
Retailer 3
-
$963 AUD
$675 USD
View
A
Retailer 4
-
$996 AUD
$698 USD
View
Final sale: no returns
A
Retailer 5
-
$1,033 AUD
View
A
Retailer 6
-
$1,089 AUD
$763 USD
View
A
Retailer 7
-
$1,097 AUD
$769 USD
View
A
Retailer 8
-
$1,122 AUD
$786 USD
View
A
Retailer 9
-
$1,129 AUD
$791 USD
View
B+
Retailer 10
-
$1,246 AUD
$873 USD
View
A
Retailer 11
-
$1,269 AUD
$889 USD
View
A
Retailer 12
-
$1,278 AUD
£705 GBP
View
B+
Retailer 13
-
$1,280 AUD
£706 GBP
View
B+
Retailer 14
-
$1,290 AUD
$904 USD
View
B+
Retailer 15
-
$1,397 AUD
£771 GBP
View
B+
Retailer 16
-
$1,428 AUD
€953 EUR
View
B
Retailer 17
-
$1,979 AUD
£1,092 GBP
View
Most Expensive
B
NZ Jewellers
0fcc5155-f3b0-456c-ae41-b3fa574cead4 · Oct 30
$3,413 AUD
$2,392 USD
View
17 more retailers have this diamond
Prices start from $822 AUDSave up to $2,591 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
0.66ct Round
$822 AUD