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Cushion|Natural|GIA

1.30ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6421716473

Certificate GIA 6421716473

Diamond specifications and retailer prices

From $3,159 CAD
As of November 6, 2026
Save $1,288 CAD (29%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $6,242 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 1.3ct natural cushion diamond

This 1.3ct natural cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6421716473. Listed at 13 retailers as of November 6, 2026, with a 41% 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

1.30
Carat
I
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6421716473
Dimensions6.01 × 5.94 × 4.12 mm
L/W Ratio1.01
Top View
6.01 mm5.94 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6421716473
Side View
Table 58.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 69.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,242 CAD|Low: $3,159 CAD|High: $6,284 CAD|Avg: $4,138 CAD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7$3,159 CAD
Retailer 10$3,175 CAD
Retailer 4$3,511 CAD
Retailer 8$3,511 CAD
Retailer 6$3,538 CAD
Retailer 11$3,539 CAD
Retailer 9$3,823 CAD
Retailer 5$4,178 CAD
Retailer 2$4,448 CAD
Retailer 3$5,148 CAD
MOH London$6,242 CAD

38 data points across 11 retailers

13 retailers$3,159 CAD to $4,448 CAD

A
Cheapest Retailer
-
$3,159 CAD
A
Retailer 2
-
$3,175 CAD
View
A
Retailer 3
-
$3,511 CAD
View
A
Retailer 4
-
$3,511 CAD
View
A
Retailer 5
-
$3,538 CAD
View
A
Retailer 6
-
$3,539 CAD
View
A
Retailer 7
-
$3,742 CAD
View
A
Retailer 8
-
$3,742 CAD
View
Retailer 9
-
$3,823 CAD
View
Price last confirmed 8 days ago
A
Retailer 10
-
$3,854 CAD
View
B+
Retailer 11
-
$4,178 CAD
View
B+
Retailer 12
-
$4,448 CAD
View
Most Expensive
MOH London
38CB6E673 · Oct 29
$6,242 CAD
£3,494 GBP
View
Price last confirmed 8 days ago
12 more retailers have this diamond
Prices start from $3,159 CADSave up to $1,288 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
1.30ct Cushion
$3,159 CAD