CaratHunter
Plans
Round|Natural|GIA

0.66ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6535595588

Certificate GIA 6535595588

Diamond specifications and retailer prices

From $737 SGD
HK$4,500 HKD
As of November 1, 2026
Save $1,065 SGD (59%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,801 SGD at MOH London · As of November 1, 2026
View at MOH London

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6535595588. Listed at 11 retailers as of November 1, 2026, with prices from $737 to $1,801, a $1,065 spread on the same certified stone. MOH London lists it at $1,801. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6535595588
Dimensions5.53 × 5.57 × 3.48 mm
L/W Ratio1.01
Top View
5.53 mm5.57 mm0.66 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535595588
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.6%

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: $1,801 SGD|Low: $720 SGD|High: $1,889 SGD|Avg: $1,277 SGD|-4.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 3, 2026
Retailer 5$737 SGD
Retailer 10$983 SGD
Retailer 8$999 SGD
Retailer 7$1,021 SGD
Retailer 9$1,127 SGD
Retailer 3$1,153 SGD
Retailer 2$1,166 SGD
Retailer 4$1,387 SGD
Retailer 6$1,469 SGD
Retailer 11$1,479 SGD
MOH London$1,801 SGD

43 data points across 11 retailers

11 retailers$737 SGD to $1,801 SGD

A
Cheapest Retailer
-
$737 SGD
HK$4,500 HKD
A
Retailer 2
-
$983 SGD
$769 USD
View
A
Retailer 3
-
$999 SGD
$781 USD
View
Retailer 4
-
$1,021 SGD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$1,127 SGD
$881 USD
View
B+
Retailer 6
-
$1,153 SGD
$902 USD
View
B+
Retailer 7
-
$1,166 SGD
£718 GBP
View
B+
Retailer 8
-
$1,387 SGD
€1,033 EUR
View
B+
Retailer 9
-
$1,469 SGD
ZAR 18,558 ZAR
View
Retailer 10
-
$1,479 SGD
A$1,780 AUD
View
Price last confirmed 30 days ago
Most Expensive
B
MOH London
713A3B4D4 · Nov 1
$1,801 SGD
£1,109 GBP
View
10 more retailers have this diamond
Prices start from $737 SGDSave up to $1,065 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
$737 SGD