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Round|Natural|GIA

0.66ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 3565704527

Certificate GIA 3565704527

Diamond specifications and retailer prices

From $905 AUD
SGD 857 SGD
As of October 31, 2026
Save $741 AUD (45%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,646 AUD at Frank Darling · As of October 30, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3565704527. Listed at 10 retailers as of October 30, 2026, with prices from $905 to $1,646, a $741 spread on the same certified stone. Frank Darling lists it at $1,646. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 3565704527
Dimensions5.53 × 3.47 × 3.47 mm
L/W Ratio1.59
Culet sizeNone
Top View
5.53 mm3.47 mm0.66 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3565704527
Side View
Table 58.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.6%

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: $1,646 AUD|Low: $1,050 AUD|High: $1,646 AUD|Avg: $1,342 AUD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 9$1,050 AUD
Retailer 7$1,103 AUD
Retailer 2$1,168 AUD
Retailer 8$1,364 AUD
Retailer 6$1,404 AUD
Retailer 3$1,417 AUD
Retailer 5$1,467 AUD
Retailer 4$1,566 AUD
Frank Darling$1,646 AUD

7 data points across 9 retailers

10 retailers$905 AUD to $1,646 AUD

A
Cheapest Retailer
-
$905 AUD
SGD 857 SGD
A
Retailer 2
-
$1,050 AUD
SGD 994 SGD
View
A
Retailer 3
-
$1,103 AUD
$773 USD
View
A
Retailer 4
-
$1,168 AUD
£644 GBP
View
B+
Retailer 5
-
$1,364 AUD
$956 USD
View
B+
Retailer 6
-
$1,404 AUD
£775 GBP
View
B+
Retailer 7
-
$1,417 AUD
€946 EUR
View
B+
Retailer 8
-
$1,467 AUD
$1,028 USD
View
B+
Retailer 9
-
$1,566 AUD
$1,098 USD
View
Most Expensive
B
Frank Darling
2708874HK · Oct 30
$1,646 AUD
$1,153 USD
View
9 more retailers have this diamond
Prices start from $905 AUDSave up to $741 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
$905 AUD