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Cushion|Natural|GIA

1.30ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6452784031

Certificate GIA 6452784031

Diamond specifications and retailer prices

From $3,829 CAD
As of November 4, 2026
Save $1,958 CAD (34%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $5,787 CAD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

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 6452784031. Listed at 6 retailers as of November 4, 2026, with prices from $3,829 to $5,787, a $1,958 spread on the same certified stone. 77 Diamonds lists it at $5,787. 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
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6452784031
Dimensions6.20 × 6.15 × 4.19 mm
L/W Ratio1.01
Top View
6.20 mm6.15 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6452784031
Side View
Table 65.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 68.2%

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 4
Current: $5,787 CAD|Low: $3,899 CAD|High: $5,901 CAD|Avg: $4,651 CAD|+0.4%
77 Diamonds
Retailer 2
Retailer 3
November 6, 2026
Retailer 2$3,899 CAD
Retailer 3$4,194 CAD
77 Diamonds$5,787 CAD

37 data points across 3 retailers

6 retailers$3,829 CAD to $5,787 CAD

A
Cheapest Retailer
-
$3,829 CAD
A
Retailer 2
-
$3,851 CAD
View
A
Retailer 3
-
$3,899 CAD
View
A
Retailer 4
-
$4,017 CAD
View
B+
Retailer 5
-
$4,194 CAD
View
Most Expensive
B+
77 Diamonds
CUSZESXV4BCV · Nov 6
$5,787 CAD
£3,240 GBP
View
5 more retailers have this diamond
Prices start from $3,829 CADSave up to $1,958 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
$3,829 CAD