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Oval|Natural|GIA

0.66ct F SI2 Oval Natural Diamond

EX • F/SI2 • GIA 7566579428

Certificate GIA 7566579428

Diamond specifications and retailer prices

From $1,058 AUD
$741 USD
As of October 31, 2026
Save $687 AUD (39%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,745 AUD at Frank Darling · As of November 2, 2026
View at Frank Darling

About this 0.66ct natural oval diamond

This 0.66ct natural oval sits in the half to three-quarter carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7566579428. Listed at 11 retailers as of October 31, 2026, with prices from $1,058 to $1,745, a $687 spread on the same certified stone. Frank Darling lists it at $1,745. 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle38.33°
Pavilion angle40.07°
OriginNatural
Grading LabGIA
CertificateGIA 7566579428
Dimensions6.80 × 4.89 × 3.05 mm
L/W Ratio1.39
Culet sizeNone
Top View
6.80 mm4.89 mm0.66 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7566579428
Side View
Table 58.0%Crown 38.33°Girdle: THN-THKPavilion 40.07°Culet: NoneDepth 62.3%

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: Oct 31
Current: $1,745 AUD|Low: $1,058 AUD|High: $1,745 AUD|Avg: $1,361 AUD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 10$1,058 AUD
Retailer 5$1,149 AUD
Retailer 9$1,153 AUD
Retailer 8$1,177 AUD
Retailer 3$1,279 AUD
Retailer 4$1,327 AUD
Retailer 7$1,331 AUD
Retailer 2$1,548 AUD
Retailer 6$1,724 AUD
Frank Darling$1,745 AUD

17 data points across 10 retailers

11 retailers$1,058 AUD to $1,745 AUD

A
Cheapest Retailer
-
$1,058 AUD
$741 USD
A
Retailer 2
-
$1,113 AUD
SGD 1,054 SGD
View
A
Retailer 3
-
$1,149 AUD
$805 USD
View
A
Retailer 4
-
$1,153 AUD
SGD 1,092 SGD
View
A
Retailer 5
-
$1,177 AUD
$825 USD
View
B+
Retailer 6
-
$1,279 AUD
£706 GBP
View
B+
Retailer 7
-
$1,327 AUD
$930 USD
View
B+
Retailer 8
-
$1,331 AUD
$933 USD
View
B+
Retailer 9
-
$1,548 AUD
€1,033 EUR
View
B+
Retailer 10
-
$1,724 AUD
$1,208 USD
View
Most Expensive
B
Frank Darling
2702948HK · Nov 2
$1,745 AUD
$1,223 USD
View
10 more retailers have this diamond
Prices start from $1,058 AUDSave up to $687 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 Oval
$1,058 AUD