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Round|Natural|GIA

0.66ct H SI2 Round Natural Diamond

VG • H/SI2 • GIA 5182091620

Certificate GIA 5182091620

Diamond specifications and retailer prices

From $1,070 AUD
$750 USD
As of November 1, 2026
Save $2,005 AUD (65%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,075 AUD at Diamond Quarter · As of November 2, 2026
View at Diamond Quarter

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 SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 5182091620. Listed at 7 retailers as of November 1, 2026, with prices from $1,070 to $3,075, a $2,005 spread on the same certified stone. Diamond Quarter lists it at $3,075. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.66
Carat
H
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5182091620
Dimensions5.72 × 5.68 × 3.38 mm
L/W Ratio1.01
Top View
5.72 mm5.68 mm0.66 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5182091620
Side View
Table 58.0%Crown 33°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 59.4%

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: $1,274 AUD|Low: $1,070 AUD|High: $1,977 AUD|Avg: $1,372 AUD|+5.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 3, 2026
Retailer 4$1,070 AUD
Retailer 5$1,196 AUD
Retailer 1$1,274 AUD
Retailer 2$1,381 AUD
Retailer 3$1,954 AUD

38 data points across 5 retailers

7 retailers$1,070 AUD to $3,075 AUD

A
Cheapest Retailer
-
$1,070 AUD
$750 USD
B+
Retailer 2
-
$1,196 AUD
$838 USD
View
B+
Retailer 3
-
$1,274 AUD
£703 GBP
View
B+
Retailer 4
-
$1,381 AUD
€922 EUR
View
B
Retailer 5
-
$1,832 AUD
€1,223 EUR
View
B
Retailer 6
-
$1,954 AUD
£1,078 GBP
View
Most Expensive
C
Diamond Quarter
0.66SI2H51200965N · Nov 2
$3,075 AUD
£1,697 GBP
View
6 more retailers have this diamond
Prices start from $1,070 AUDSave up to $2,005 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
$1,070 AUD