Round|Natural|GIA

0.66ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2564425219

Certificate GIA 2564425219

Diamond specifications and retailer prices

From $576 USD
HK$4,500 HKD
As of November 1, 2026
Save $1,816 USD (76%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,392 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 top-tier cut grade and certified by GIA 2564425219. Listed at 18 retailers as of October 30, 2026, with prices from $576 to $2,392, a $1,816 spread on the same certified stone. NZ Jewellers lists it at $2,392. 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
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2564425219
Dimensions5.58 × 5.62 × 3.44 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Crystal, Knot
Top View
5.58 mm5.62 mm0.66 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2564425219
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.5%

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: $2,392 USD|Low: $576 USD|High: $2,396 USD|Avg: $905 USD|-0.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 10$576 USD
Retailer 2$577 USD
Retailer 18$675 USD
Retailer 3$698 USD
Retailer 8$724 USD
Retailer 6$763 USD
Retailer 5$769 USD
Retailer 11$786 USD
Retailer 7$791 USD
Retailer 9$873 USD
Retailer 15$889 USD
Retailer 4$895 USD
Retailer 17$904 USD
Retailer 13$904 USD
Retailer 12$979 USD
Retailer 14$1,001 USD
Retailer 16$1,387 USD
NZ Jewellers$2,392 USD

24 data points across 18 retailers

18 retailers$576 USD to $2,392 USD

A
Cheapest Retailer
-
$576 USD
HK$4,500 HKD
A
Retailer 2
-
$577 USD
₹54,965 INR
View
A
Retailer 3
-
$675 USD
View
A
Retailer 4
-
$698 USD
View
Final sale: no returns
A
Retailer 5
-
$724 USD
A$1,113 AUD
View
A
Retailer 6
-
$763 USD
View
A
Retailer 7
-
$769 USD
View
A
Retailer 8
-
$786 USD
View
A
Retailer 9
-
$791 USD
View
B+
Retailer 10
-
$873 USD
View
A
Retailer 11
-
$889 USD
View
A
Retailer 12
-
$895 USD
£705 GBP
View
B+
Retailer 13
-
$904 USD
View
B+
Retailer 14
-
$904 USD
£712 GBP
View
B+
Retailer 15
-
$979 USD
£771 GBP
View
B+
Retailer 16
-
$1,001 USD
€953 EUR
View
B
Retailer 17
-
$1,387 USD
£1,092 GBP
View
Most Expensive
B
NZ Jewellers
0fcc5155-f3b0-456c-ae41-b3fa574cead4 · Oct 30
$2,392 USD
View
17 more retailers have this diamond
Prices start from $576 USDSave up to $1,816 USD

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
$576 USD