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Round|Natural|GIA

0.66ct I IF Round Natural Diamond

EX • I/IF • GIA 6551035322

Certificate GIA 6551035322

Diamond specifications and retailer prices

From $1,223 AUD
$857 USD
As of November 2, 2026
Save $280 AUD (19%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,503 AUD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 0.66ct natural round diamond

This 0.66ct natural round sits in the half to three-quarter carat band, graded I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 6551035322. Listed at 6 retailers as of October 31, 2026, with prices from $1,223 to $1,503, a $280 spread on the same certified stone. Blue Nile lists it at $1,503. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.66
Carat
I
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6551035322
Dimensions5.51 × 5.55 × 3.48 mm
L/W Ratio1.01
Top View
5.51 mm5.55 mm0.66 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551035322
Side View
Table 55.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.0%

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: Nov 2
Current: $1,503 AUD|Low: $1,132 AUD|High: $1,735 AUD|Avg: $1,384 AUD|-13.4%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 3, 2026
Retailer 4$1,223 AUD
Retailer 3$1,232 AUD
Retailer 5$1,336 AUD
Retailer 6$1,359 AUD
Retailer 2$1,377 AUD
Blue Nile$1,503 AUD

40 data points across 6 retailers

6 retailers$1,223 AUD to $1,503 AUD

A
Cheapest Retailer
-
$1,223 AUD
$857 USD
Final sale: no returns
A
Retailer 2
-
$1,232 AUD
MYR 3,517 MYR
View
A
Retailer 3
-
$1,336 AUD
$936 USD
View
A
Retailer 4
-
$1,359 AUD
SGD 1,287 SGD
View
A
Retailer 5
-
$1,377 AUD
£760 GBP
View
Most Expensive
A
Blue Nile
28841913 · Oct 31
$1,503 AUD
$1,053 USD
View
5 more retailers have this diamond
Prices start from $1,223 AUDSave up to $280 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
$1,223 AUD