CaratHunter
Plans
Round|Natural|GIA

0.66ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6535595588

Certificate GIA 6535595588

Diamond specifications and retailer prices

From $822 AUD
HK$4,500 HKD
As of November 1, 2026
Save $1,188 AUD (59%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,010 AUD at MOH London · As of November 1, 2026
View at MOH London

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 6535595588. Listed at 11 retailers as of November 1, 2026, with prices from $822 to $2,010, a $1,188 spread on the same certified stone. MOH London lists it at $2,010. 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 angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6535595588
Dimensions5.53 × 5.57 × 3.48 mm
L/W Ratio1.01
Top View
5.53 mm5.57 mm0.66 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535595588
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°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: Nov 1
Current: $2,010 AUD|Low: $804 AUD|High: $2,108 AUD|Avg: $1,425 AUD|-4.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 5$822 AUD
Retailer 10$1,097 AUD
Retailer 8$1,114 AUD
Retailer 7$1,139 AUD
Retailer 9$1,257 AUD
Retailer 3$1,287 AUD
Retailer 2$1,301 AUD
Retailer 4$1,548 AUD
Retailer 6$1,639 AUD
Retailer 11$1,651 AUD
MOH London$2,010 AUD

43 data points across 11 retailers

11 retailers$822 AUD to $2,010 AUD

A
Cheapest Retailer
-
$822 AUD
HK$4,500 HKD
A
Retailer 2
-
$1,097 AUD
$769 USD
View
A
Retailer 3
-
$1,114 AUD
$781 USD
View
Retailer 4
-
$1,139 AUD
SGD 1,079 SGD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$1,257 AUD
$881 USD
View
B+
Retailer 6
-
$1,287 AUD
$902 USD
View
B+
Retailer 7
-
$1,301 AUD
£718 GBP
View
B+
Retailer 8
-
$1,548 AUD
€1,033 EUR
View
B+
Retailer 9
-
$1,639 AUD
ZAR 18,558 ZAR
View
Retailer 10
-
$1,651 AUD
View
Price last confirmed 30 days ago
Most Expensive
B
MOH London
713A3B4D4 · Nov 1
$2,010 AUD
£1,109 GBP
View
10 more retailers have this diamond
Prices start from $822 AUDSave up to $1,188 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