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Cushion|Natural|GIA

1.05ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6243087579

Certificate GIA 6243087579

Diamond specifications and retailer prices

From $4,318 CAD
$3,091 USD
As of October 31, 2026
Save $662 CAD (13%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,980 CAD at 77 Diamonds · As of October 31, 2026
View at 77 Diamonds

About this 1.05ct natural cushion diamond

This 1.05ct 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 6243087579. Listed at 2 retailers as of October 31, 2026, with prices from $4,318 to $4,980, a $662 spread on the same certified stone. 77 Diamonds lists it at $4,980. 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

1.05
Carat
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6243087579
Dimensions6.71 × 5.50 × 3.73 mm
L/W Ratio1.22
Top View
6.71 mm5.50 mm1.05 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6243087579
Side View
Table 59.0%CrownGirdle: THN-VTKPavilionCulet: LargeDepth 67.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: $4,980 CAD|Low: $4,318 CAD|High: $4,980 CAD|Avg: $4,886 CAD|+1.0%
77 Diamonds
Retailer 2
October 31, 2026
Retailer 2$4,318 CAD
77 Diamonds$4,980 CAD

10 data points across 2 retailers

2 retailers$4,318 CAD to $4,980 CAD

B+
Cheapest Retailer
-
$4,318 CAD
$3,091 USD
Most Expensive
B
77 Diamonds
CUSJE885KNRT · Oct 31
$4,980 CAD
£2,807 GBP
View
1 more retailer has this diamond
Prices start from $4,318 CADSave up to $662 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.

B+
1.05ct Cushion
$4,318 CAD