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Cushion|Natural|GIA

1.20ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 1545912378

Certificate GIA 1545912378

Diamond specifications and retailer prices

From $4,194 CAD
As of November 6, 2026
Save $5,010 CAD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,396 CAD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545912378. Listed at 19 retailers as of November 2, 2026, with a 119% 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

1.20
Carat
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1545912378
Dimensions7.28 × 5.45 × 3.69 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Needle, Pinpoint
Top View
7.28 mm5.45 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1545912378
Side View
Table 66.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.8%

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 6
Current: $9,396 CAD|Low: $4,158 CAD|High: $9,593 CAD|Avg: $6,070 CAD|-2.0%
Queensmith
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
November 6, 2026
Retailer 15$4,194 CAD
Retailer 2$4,360 CAD
Retailer 6$4,998 CAD
Retailer 5$5,081 CAD
Retailer 13$5,096 CAD
Retailer 4$5,254 CAD
Retailer 10$5,290 CAD
Retailer 8$5,339 CAD
Retailer 11$5,542 CAD
Retailer 3$5,709 CAD
Retailer 7$5,875 CAD
Retailer 9$6,193 CAD
Retailer 12$6,718 CAD
Retailer 14$9,205 CAD
Queensmith$9,396 CAD

23 data points across 15 retailers

19 retailers$4,194 CAD to $9,205 CAD

A
Cheapest Retailer
-
$4,194 CAD
B+
Retailer 2
-
$4,360 CAD
View
B+
Retailer 3
-
$4,998 CAD
View
B+
Retailer 4
-
$5,081 CAD
View
Final sale: no returns
B+
Retailer 5
-
$5,096 CAD
View
B+
Retailer 6
-
$5,254 CAD
View
B+
Retailer 7
-
$5,290 CAD
View
B+
Retailer 8
-
$5,317 CAD
View
B+
Retailer 9
-
$5,339 CAD
View
B+
Retailer 10
-
$5,542 CAD
View
B+
Retailer 11
-
$5,676 CAD
View
Retailer 12
-
$5,701 CAD
View
Price last confirmed 21 days ago
B+
Retailer 13
-
$5,709 CAD
View
B+
Retailer 14
-
$5,875 CAD
View
B+
Retailer 15
-
$6,193 CAD
View
Retailer 16
-
$6,206 CAD
View
Price last confirmed 33 days ago
B
Retailer 17
-
$6,718 CAD
View
B
Retailer 18
-
$9,205 CAD
View
Most Expensive
Queensmith
1545912378 · Oct 28
$9,396 CAD
£5,260 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from $4,194 CADSave up to $5,010 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
1.20ct Cushion
$4,194 CAD