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Round|Natural|GIA

0.66ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 6542345500

Certificate GIA 6542345500

Diamond specifications and retailer prices

From $683 AUD
SGD 647 SGD
As of October 31, 2026
Save $672 AUD (50%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,355 AUD at Frank Darling · As of November 2, 2026
View at Frank Darling

About this 0.66ct natural round diamond

This 0.66ct natural round sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6542345500. Listed at 8 retailers as of October 31, 2026, with prices from $683 to $1,355, a $672 spread on the same certified stone. Frank Darling lists it at $1,355. 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
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6542345500
Dimensions5.56 × 5.58 × 3.47 mm
L/W Ratio1.00
Top View
5.56 mm5.58 mm0.66 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542345500
Side View
Table 58.0%Crown 36.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $1,355 AUD|Low: $683 AUD|High: $1,430 AUD|Avg: $1,080 AUD|-5.3%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 5$683 AUD
Retailer 6$745 AUD
Retailer 4$968 AUD
Retailer 2$1,058 AUD
Retailer 3$1,078 AUD
Retailer 7$1,125 AUD
Retailer 8$1,291 AUD
Frank Darling$1,355 AUD

29 data points across 8 retailers

8 retailers$683 AUD to $1,355 AUD

A
Cheapest Retailer
-
$683 AUD
SGD 647 SGD
A
Retailer 2
-
$745 AUD
SGD 706 SGD
View
A
Retailer 3
-
$966 AUD
$677 USD
View
A
Retailer 4
-
$968 AUD
$679 USD
View
A
Retailer 5
-
$1,058 AUD
€706 EUR
View
A
Retailer 6
-
$1,078 AUD
£595 GBP
View
Retailer 7
-
$1,125 AUD
$788 USD
View
Price last confirmed 7 days ago
Most Expensive
A
Frank Darling
2571627HK · Nov 2
$1,355 AUD
$949 USD
View
7 more retailers have this diamond
Prices start from $683 AUDSave up to $672 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
$683 AUD