CaratHunter
Plans
Round|Natural|GIA

0.66ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2566134555

Certificate GIA 2566134555

Diamond specifications and retailer prices

From HK$5,839 HKD
$744 USD
As of October 31, 2026
Save HK$3,780 HKD (39%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$9,619 HKD at Frank Darling · As of November 2, 2026
View at Frank Darling

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 2566134555. Listed at 11 retailers as of October 31, 2026, with prices from HK$5,839 to HK$9,619, a HK$3,780 spread on the same certified stone. Frank Darling lists it at HK$9,619. 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 angle32.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2566134555
Dimensions5.67 × 5.71 × 3.42 mm
L/W Ratio1.01
Culet sizeNone
Top View
5.67 mm5.71 mm0.66 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566134555
Side View
Table 59.0%Crown 32.5°Girdle: THN-MEDPavilion 41.4°Culet: NoneDepth 60.1%

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: Oct 31
Current: HK$9,619 HKD|Low: HK$5,839 HKD|High: HK$9,926 HKD|Avg: HK$7,602 HKD|-3.1%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 9HK$5,839 HKD
Retailer 6HK$6,143 HKD
Retailer 3HK$6,364 HKD
Retailer 10HK$6,497 HKD
Retailer 4HK$7,017 HKD
Retailer 5HK$7,336 HKD
Retailer 11HK$7,352 HKD
Retailer 7HK$8,370 HKD
Retailer 2HK$8,519 HKD
Retailer 8HK$9,422 HKD
Frank DarlingHK$9,619 HKD

30 data points across 11 retailers

11 retailersHK$5,839 HKD to HK$9,619 HKD

A
Cheapest Retailer
-
HK$5,839 HKD
$744 USD
A
Retailer 2
-
HK$6,143 HKD
SGD 1,058 SGD
View
A
Retailer 3
-
HK$6,364 HKD
SGD 1,096 SGD
View
A
Retailer 4
-
HK$6,497 HKD
$828 USD
View
B+
Retailer 5
-
HK$7,017 HKD
£704 GBP
View
B+
Retailer 6
-
HK$7,336 HKD
$935 USD
View
B+
Retailer 7
-
HK$7,352 HKD
$937 USD
View
B+
Retailer 8
-
HK$8,370 HKD
£840 GBP
View
B+
Retailer 9
-
HK$8,519 HKD
€1,034 EUR
View
Retailer 10
-
HK$9,422 HKD
$1,201 USD
View
Price last confirmed 7 days ago
Most Expensive
B+
Frank Darling
2677081HK · Nov 2
HK$9,619 HKD
$1,226 USD
View
10 more retailers have this diamond
Prices start from HK$5,839 HKDSave up to HK$3,780 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$5,839 HKD