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0.66ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1559266688

Certificate GIA 1559266688

Diamond specifications and retailer prices

From HK$3,739 HKD
SGD 644 SGD
As of October 31, 2026
Save HK$3,689 HKD (50%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$7,428 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 1559266688. Listed at 8 retailers as of October 31, 2026, with prices from HK$3,739 to HK$7,428, a HK$3,689 spread on the same certified stone. Frank Darling lists it at HK$7,428. 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
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1559266688
Dimensions5.57 × 5.59 × 3.47 mm
L/W Ratio1.00
Culet sizeNone
Top View
5.57 mm5.59 mm0.66 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1559266688
Side View
Table 57.0%Crown 36°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 62.1%

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$7,428 HKD|Low: HK$2,491 HKD|High: HK$7,428 HKD|Avg: HK$5,168 HKD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 9HK$2,491 HKD
Retailer 4HK$3,739 HKD
Retailer 10HK$4,076 HKD
Retailer 7HK$4,661 HKD
Retailer 8HK$5,295 HKD
Retailer 2HK$5,792 HKD
Retailer 3HK$5,929 HKD
Retailer 5HK$6,130 HKD
Retailer 6HK$6,263 HKD
Frank DarlingHK$7,428 HKD

6 data points across 10 retailers

8 retailersHK$3,739 HKD to HK$7,428 HKD

A
Cheapest Retailer
-
HK$3,739 HKD
SGD 644 SGD
A
Retailer 2
-
HK$4,076 HKD
SGD 702 SGD
View
A
Retailer 3
-
HK$4,661 HKD
$594 USD
View
A
Retailer 4
-
HK$5,295 HKD
$675 USD
View
A
Retailer 5
-
HK$5,792 HKD
€703 EUR
View
A
Retailer 6
-
HK$5,929 HKD
£595 GBP
View
Retailer 7
-
HK$6,130 HKD
$781 USD
View
Price last confirmed 7 days ago
Most Expensive
B+
Frank Darling
2640840HK · Nov 2
HK$7,428 HKD
$947 USD
View
7 more retailers have this diamond
Prices start from HK$3,739 HKDSave up to HK$3,689 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$3,739 HKD