CaratHunter
Plans
Round|Natural|GIA

1.66ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2547765261

Certificate GIA 2547765261

Diamond specifications and retailer prices

From $3,421 CAD
As of November 4, 2026
Save $4,428 CAD (56%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $7,989 CAD at NZ Jewellers · As of October 23, 2026
View at NZ Jewellers

About this 1.66ct natural round diamond

This 1.66ct natural round sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2547765261. Listed at 13 retailers as of November 4, 2026, with a 129% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.66
Carat
M
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2547765261
Dimensions7.53 × 7.58 × 4.71 mm
L/W Ratio1.01
Top View
7.53 mm7.58 mm1.66 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2547765261
Side View
Table 58.0%Crown 36°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.3%

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 4
Current: $7,849 CAD|Low: $3,366 CAD|High: $8,361 CAD|Avg: $5,186 CAD|-6.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11$3,421 CAD
Retailer 3$3,770 CAD
Retailer 8$4,158 CAD
Retailer 10$4,367 CAD
Retailer 4$4,615 CAD
Retailer 12$4,621 CAD
Retailer 2$4,905 CAD
Retailer 7$4,986 CAD
Retailer 5$5,234 CAD
Retailer 6$5,498 CAD
Retailer 9$7,050 CAD
NZ Jewellers$7,849 CAD

38 data points across 12 retailers

13 retailers$3,421 CAD to $7,849 CAD

A
Cheapest Retailer
-
$3,421 CAD
Retailer 2
-
$3,770 CAD
View
Price last confirmed 16 days ago
A
Retailer 3
-
$4,158 CAD
View
Final sale: no returns
B+
Retailer 4
-
$4,367 CAD
View
B+
Retailer 5
-
$4,615 CAD
View
B+
Retailer 6
-
$4,621 CAD
View
B+
Retailer 7
-
$4,905 CAD
View
B+
Retailer 8
-
$4,986 CAD
View
B+
Retailer 9
-
$5,234 CAD
View
B+
Retailer 10
-
$5,498 CAD
View
B
Retailer 11
-
$7,050 CAD
View
B
Retailer 12
-
$7,849 CAD
View
Most Expensive
NZ Jewellers
c3dc410e-7922-4c5e-aaf1-a752583d0752 · Oct 23
$7,989 CAD
$5,680 USD
View
Price last confirmed 14 days ago
12 more retailers have this diamond
Prices start from $3,421 CADSave up to $4,428 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
1.66ct Round
$3,421 CAD