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Radiant|Natural|GIA

1.25ct K SI1 Radiant Natural Diamond

EX • K/SI1 • GIA 6551309782

Certificate GIA 6551309782

Diamond specifications and retailer prices

From $2,232 CAD
As of November 6, 2026
Save $2,889 CAD (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,179 CAD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.25ct natural radiant diamond

This 1.25ct natural radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551309782. Listed at 16 retailers as of November 1, 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

1.25
Carat
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551309782
Dimensions7.21 × 5.33 × 3.60 mm
L/W Ratio1.35
Girdle conditionPolished
Top View
7.21 mm5.33 mm1.25 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551309782
Side View
Table 67.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 67.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $2,476 CAD|Low: $2,177 CAD|High: $5,403 CAD|Avg: $3,142 CAD|-13.1%
Retailer 1
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
November 7, 2026
Retailer 4$2,232 CAD
Retailer 12$2,471 CAD
Retailer 13$2,474 CAD
Retailer 1$2,476 CAD
Retailer 8$2,504 CAD
Retailer 11$2,601 CAD
Retailer 2$2,743 CAD
Retailer 5$2,855 CAD
Retailer 7$2,909 CAD
Retailer 3$3,239 CAD
Retailer 10$3,608 CAD
Retailer 9$3,975 CAD
Retailer 14$4,479 CAD
Retailer 6$5,121 CAD

37 data points across 14 retailers

16 retailers$2,232 CAD to $5,121 CAD

A
Cheapest Retailer
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$2,232 CAD
A
Retailer 2
-
$2,471 CAD
View
Final sale: no returns
A
Retailer 3
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$2,474 CAD
View
A
Retailer 4
-
$2,476 CAD
View
A
Retailer 5
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$2,504 CAD
View
A
Retailer 6
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$2,601 CAD
View
A
Retailer 7
-
$2,743 CAD
View
A
Retailer 8
-
$2,855 CAD
View
A
Retailer 9
-
$2,909 CAD
View
A
Retailer 10
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$2,988 CAD
View
A
Retailer 11
-
$3,239 CAD
View
A
Retailer 12
-
$3,608 CAD
View
A
Retailer 13
-
$3,975 CAD
View
B+
Retailer 14
-
$4,479 CAD
View
B+
Retailer 15
-
$5,121 CAD
View
Most Expensive
NZ Jewellers
b4f77107-2584-40c9-9b49-88b7a2938865 · Sep 25
$6,179 CAD
$4,393 USD
View
Price last confirmed 42 days ago
15 more retailers have this diamond
Prices start from $2,232 CADSave up to $2,889 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
1.25ct Radiant
$2,232 CAD