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Round|Natural|GIA

0.66ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2564425219

Certificate GIA 2564425219

Diamond specifications and retailer prices

From HK$4,519 HKD
As of November 1, 2026
Save HK$14,249 HKD (76%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$18,768 HKD 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 HK$4,519 to HK$18,768, a HK$14,249 spread on the same certified stone. NZ Jewellers lists it at HK$18,768. 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
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: HK$18,768 HKD|Low: HK$4,519 HKD|High: HK$18,799 HKD|Avg: HK$7,090 HKD|-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 3, 2026
Retailer 10HK$4,519 HKD
Retailer 11HK$4,528 HKD
Retailer 18HK$5,296 HKD
Retailer 3HK$5,477 HKD
Retailer 8HK$5,678 HKD
Retailer 6HK$5,987 HKD
Retailer 5HK$6,034 HKD
Retailer 12HK$6,167 HKD
Retailer 7HK$6,206 HKD
Retailer 9HK$6,850 HKD
Retailer 15HK$6,978 HKD
Retailer 4HK$7,025 HKD
Retailer 2HK$7,037 HKD
Retailer 17HK$7,093 HKD
Retailer 13HK$7,684 HKD
Retailer 14HK$7,851 HKD
Retailer 16HK$10,881 HKD
NZ JewellersHK$18,768 HKD

24 data points across 18 retailers

18 retailersHK$4,519 HKD to HK$18,768 HKD

A
Cheapest Retailer
-
HK$4,519 HKD
A
Retailer 2
-
HK$4,528 HKD
₹54,965 INR
View
A
Retailer 3
-
HK$5,296 HKD
$675 USD
View
A
Retailer 4
-
HK$5,477 HKD
$698 USD
View
Final sale: no returns
A
Retailer 5
-
HK$5,678 HKD
A$1,113 AUD
View
A
Retailer 6
-
HK$5,987 HKD
$763 USD
View
A
Retailer 7
-
HK$6,034 HKD
$769 USD
View
A
Retailer 8
-
HK$6,167 HKD
$786 USD
View
A
Retailer 9
-
HK$6,206 HKD
$791 USD
View
Retailer 10
-
HK$6,850 HKD
$873 USD
View
Price last confirmed 7 days ago
A
Retailer 11
-
HK$6,978 HKD
$889 USD
View
A
Retailer 12
-
HK$7,025 HKD
£705 GBP
View
B+
Retailer 13
-
HK$7,037 HKD
£706 GBP
View
B+
Retailer 14
-
HK$7,093 HKD
$904 USD
View
B+
Retailer 15
-
HK$7,684 HKD
£771 GBP
View
B+
Retailer 16
-
HK$7,851 HKD
€953 EUR
View
B
Retailer 17
-
HK$10,881 HKD
£1,092 GBP
View
Most Expensive
B
NZ Jewellers
0fcc5155-f3b0-456c-ae41-b3fa574cead4 · Oct 30
HK$18,768 HKD
$2,392 USD
View
17 more retailers have this diamond
Prices start from HK$4,519 HKDSave up to HK$14,249 HKD

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
HK$4,519 HKD