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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 $612 SGD
As of November 3, 2026
Save $598 SGD (49%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,211 SGD 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 November 2, 2026, with prices from $612 to $1,211, a $598 spread on the same certified stone. Frank Darling lists it at $1,211. 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: Nov 3
Current: $1,211 SGD|Low: $406 SGD|High: $1,211 SGD|Avg: $842 SGD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 9$406 SGD
Retailer 2$612 SGD
Retailer 10$664 SGD
Retailer 7$760 SGD
Retailer 8$863 SGD
Retailer 3$944 SGD
Retailer 4$966 SGD
Retailer 5$999 SGD
Retailer 6$1,021 SGD
Frank Darling$1,211 SGD

6 data points across 10 retailers

8 retailers$612 SGD to $1,211 SGD

A
Cheapest Retailer
-
$612 SGD
A
Retailer 2
-
$664 SGD
View
A
Retailer 3
-
$760 SGD
$594 USD
View
A
Retailer 4
-
$863 SGD
$675 USD
View
A
Retailer 5
-
$944 SGD
€703 EUR
View
A
Retailer 6
-
$966 SGD
£595 GBP
View
Retailer 7
-
$999 SGD
$781 USD
View
Price last confirmed 7 days ago
Most Expensive
B+
Frank Darling
2640840HK · Nov 2
$1,211 SGD
$947 USD
View
7 more retailers have this diamond
Prices start from $612 SGDSave up to $598 SGD

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
$612 SGD