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Round|Natural|GIA

0.66ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 5241025206

Certificate GIA 5241025206

Diamond specifications and retailer prices

From $898 CAD
SGD 868 SGD
As of October 31, 2026
Save $728 CAD (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,625 CAD 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5241025206. Listed at 12 retailers as of October 31, 2026, with prices from $898 to $1,625, a $728 spread on the same certified stone. Frank Darling lists it at $1,625. 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 5241025206
Dimensions5.57 × 5.58 × 3.49 mm
L/W Ratio1.00
Culet sizeNone
Top View
5.57 mm5.58 mm0.66 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5241025206
Side View
Table 56.0%Crown 34.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.5%

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: Oct 31
Current: $1,625 CAD|Low: $898 CAD|High: $1,672 CAD|Avg: $1,262 CAD|-2.8%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 6$898 CAD
Retailer 11$978 CAD
Retailer 4$1,040 CAD
Retailer 3$1,066 CAD
Retailer 9$1,093 CAD
Retailer 2$1,159 CAD
Retailer 10$1,354 CAD
Retailer 7$1,393 CAD
Retailer 5$1,397 CAD
Retailer 12$1,456 CAD
Retailer 8$1,556 CAD
Frank Darling$1,625 CAD

43 data points across 12 retailers

12 retailers$898 CAD to $1,625 CAD

A
Cheapest Retailer
-
$898 CAD
SGD 868 SGD
A
Retailer 2
-
$978 CAD
$700 USD
View
A
Retailer 3
-
$1,040 CAD
SGD 1,006 SGD
View
A
Retailer 4
-
$1,066 CAD
$763 USD
View
A
Retailer 5
-
$1,093 CAD
$782 USD
View
A
Retailer 6
-
$1,159 CAD
£653 GBP
View
B+
Retailer 7
-
$1,354 CAD
$969 USD
View
B+
Retailer 8
-
$1,393 CAD
£785 GBP
View
B+
Retailer 9
-
$1,397 CAD
€952 EUR
View
B+
Retailer 10
-
$1,456 CAD
$1,042 USD
View
Retailer 11
-
$1,556 CAD
$1,114 USD
View
Price last confirmed 7 days ago
Most Expensive
B+
Frank Darling
2669868HK · Nov 2
$1,625 CAD
$1,163 USD
View
11 more retailers have this diamond
Prices start from $898 CADSave up to $728 CAD

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
$898 CAD