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Round|Natural|GIA

0.66ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6501281572

Certificate GIA 6501281572

Diamond specifications and retailer prices

From $749 AUD
HK$4,100 HKD
As of November 1, 2026
Save $2,011 AUD (73%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,760 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 6501281572. Listed at 14 retailers as of October 30, 2026, with prices from $749 to $2,760, a $2,011 spread on the same certified stone. NZ Jewellers lists it at $2,760. 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
FluorescenceStrong
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6501281572
Dimensions5.58 × 5.56 × 3.46 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
5.58 mm5.56 mm0.66 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6501281572
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.2%

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: $2,760 AUD|Low: $749 AUD|High: $2,760 AUD|Avg: $1,226 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
November 3, 2026
Retailer 4$749 AUD
Retailer 10$812 AUD
Retailer 9$892 AUD
Retailer 11$947 AUD
Retailer 14$947 AUD
Retailer 6$971 AUD
Retailer 3$1,016 AUD
Retailer 13$1,016 AUD
Retailer 7$1,077 AUD
Retailer 5$1,103 AUD
Retailer 2$1,181 AUD
Retailer 12$1,266 AUD
Retailer 8$2,033 AUD
NZ Jewellers$2,760 AUD

40 data points across 14 retailers

14 retailers$749 AUD to $2,760 AUD

A
Cheapest Retailer
-
$749 AUD
HK$4,100 HKD
A
Retailer 2
-
$812 AUD
$569 USD
View
Final sale: no returns
Retailer 3
-
$880 AUD
$617 USD
View
Price last confirmed 49 days ago
A
Retailer 4
-
$892 AUD
$625 USD
View
A
Retailer 5
-
$923 AUD
SGD 874 SGD
View
A
Retailer 6
-
$947 AUD
$664 USD
View
A
Retailer 7
-
$947 AUD
$664 USD
View
A
Retailer 8
-
$1,016 AUD
$712 USD
View
A
Retailer 9
-
$1,016 AUD
$712 USD
View
A
Retailer 10
-
$1,077 AUD
£594 GBP
View
A
Retailer 11
-
$1,181 AUD
€788 EUR
View
B+
Retailer 12
-
$1,266 AUD
$887 USD
View
B
Retailer 13
-
$2,033 AUD
£1,122 GBP
View
Most Expensive
B
NZ Jewellers
108d9daa-d786-4562-9ea8-ae75631ea637 · Oct 30
$2,760 AUD
$1,934 USD
View
13 more retailers have this diamond
Prices start from $749 AUDSave up to $2,011 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
$749 AUD