CaratHunter
Plans
Radiant|Natural|GIA

1.31ct K SI1 Radiant Natural Diamond

ID • K/SI1 • GIA 11

Certificate GIA 11

Diamond specifications and retailer prices

From $3,414 CAD
As of November 4, 2026
Save $4,342 CAD (56%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $7,756 CAD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.31ct natural radiant diamond

This 1.31ct 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. Listed at 8 retailers as of November 4, 2026, with prices from $3,414 to $7,756, a $4,342 spread on the same certified stone. NZ Jewellers lists it at $7,756. 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

1.31
Carat
K
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 11
Dimensions7.33 × 5.49 × 3.75 mm
L/W Ratio1.34
Top View
7.33 mm5.49 mm1.31 ctK / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 11
Side View
Table 68.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.3%

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: $7,756 CAD|Low: $3,414 CAD|High: $7,756 CAD|Avg: $4,529 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
September 30, 2026
Retailer 8$3,414 CAD
Retailer 4$3,514 CAD
Retailer 5$4,033 CAD
Retailer 6$4,033 CAD
Retailer 2$4,189 CAD
Retailer 3$4,359 CAD
Retailer 7$4,653 CAD
NZ Jewellers$7,756 CAD

3 data points across 8 retailers

8 retailers$3,414 CAD to $7,756 CAD

A
Cheapest Retailer
-
$3,414 CAD
A
Retailer 2
-
$3,514 CAD
View
Retailer 3
-
$4,033 CAD
View
Price last confirmed 9 days ago
A
Retailer 4
-
$4,033 CAD
View
A
Retailer 5
-
$4,189 CAD
View
B+
Retailer 6
-
$4,359 CAD
View
B+
Retailer 7
-
$4,653 CAD
View
Most Expensive
B
NZ Jewellers
cb41615b-a6f8-4181-bfe7-05febe830fb7 · Nov 5
$7,756 CAD
$5,514 USD
View
7 more retailers have this diamond
Prices start from $3,414 CADSave up to $4,342 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
1.31ct Radiant
$3,414 CAD