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Round|Natural|GIA

0.90ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6445689140

Certificate GIA 6445689140

Diamond specifications and retailer prices

From $1,310 CAD
As of November 5, 2026
Save $3,015 CAD (70%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,501 CAD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.9ct natural round diamond

This 0.9ct natural round sits in the just-under-one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6445689140. Listed at 20 retailers as of November 5, 2026, with a 230% 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

0.90
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6445689140
Dimensions6.18 × 6.14 × 3.84 mm
L/W Ratio1.01
Top View
6.18 mm6.14 mm0.90 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6445689140
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°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 5
Current: $4,325 CAD|Low: $1,310 CAD|High: $4,325 CAD|Avg: $2,093 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 5, 2026
Retailer 10$1,310 CAD
Retailer 9$1,582 CAD
Retailer 14$1,627 CAD
Retailer 3$1,698 CAD
Retailer 5$1,711 CAD
Retailer 7$1,774 CAD
Retailer 17$1,774 CAD
Retailer 15$1,841 CAD
Retailer 4$1,855 CAD
Retailer 16$1,934 CAD
Retailer 6$1,961 CAD
Retailer 12$1,994 CAD
Retailer 8$2,046 CAD
Retailer 2$2,279 CAD
Retailer 11$2,596 CAD
Retailer 13$3,239 CAD
NZ Jewellers$4,325 CAD

32 data points across 17 retailers

20 retailers$1,310 CAD to $4,325 CAD

A
Cheapest Retailer
-
$1,310 CAD
A
Retailer 2
-
$1,582 CAD
View
A
Retailer 3
-
$1,627 CAD
View
B+
Retailer 4
-
$1,698 CAD
View
B+
Retailer 5
-
$1,711 CAD
View
Retailer 6
-
$1,774 CAD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$1,774 CAD
View
B+
Retailer 8
-
$1,841 CAD
View
Retailer 9
-
$1,845 CAD
View
Price last confirmed 44 days ago
B+
Retailer 10
-
$1,855 CAD
View
B+
Retailer 11
-
$1,934 CAD
View
B+
Retailer 12
-
$1,961 CAD
View
B+
Retailer 13
-
$1,994 CAD
View
B+
Retailer 14
-
$2,046 CAD
View
Retailer 15
-
$2,130 CAD
View
Price last confirmed 45 days ago
B
Retailer 16
-
$2,279 CAD
View
B
Retailer 17
-
$2,596 CAD
View
B
Retailer 18
-
$3,239 CAD
View
B
Retailer 19
-
$4,325 CAD
View
Most Expensive
NZ Jewellers
07ab2574-a29e-409b-9c2a-a355e5b43375 · Sep 25
$4,501 CAD
$3,223 USD
View
Price last confirmed 41 days ago
19 more retailers have this diamond
Prices start from $1,310 CADSave up to $3,015 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
0.90ct Round
$1,310 CAD