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Cushion|Natural|GIA

0.90ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6285677170

Certificate GIA 6285677170

Diamond specifications and retailer prices

From $758 CAD
As of November 6, 2026
Save $2,597 CAD (77%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,355 CAD at Adiamor · As of November 5, 2026
View at Adiamor

About this 0.9ct natural cushion diamond

This 0.9ct natural cushion sits in the just-under-one-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 6285677170. Listed at 16 retailers as of November 5, 2026, with prices from $758 to $3,355, a $2,597 spread on the same certified stone. Adiamor lists it at $3,355. 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

0.90
Carat
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6285677170
Dimensions5.26 × 5.21 × 3.84 mm
L/W Ratio1.01
Top View
5.26 mm5.21 mm0.90 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6285677170
Side View
Table 54.0%CrownGirdle: THK-THKPavilionCulet: NoneDepth 73.7%

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: $758 CAD|Low: $758 CAD|High: $2,179 CAD|Avg: $1,418 CAD|-4.1%
Retailer 1
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 1$758 CAD
Retailer 2$810 CAD
Retailer 7$1,104 CAD
Retailer 4$1,113 CAD
Retailer 10$1,117 CAD
Retailer 14$1,128 CAD
Retailer 6$1,207 CAD
Retailer 15$1,249 CAD
Retailer 5$1,258 CAD
Retailer 11$1,324 CAD
Retailer 3$1,350 CAD
Retailer 9$1,563 CAD
Retailer 12$1,629 CAD
Retailer 13$2,034 CAD
Retailer 8$2,128 CAD

25 data points across 15 retailers

16 retailers$758 CAD to $3,355 CAD

A
Cheapest Retailer
-
$758 CAD
A
Retailer 2
-
$810 CAD
View
B+
Retailer 3
-
$1,104 CAD
View
Retailer 4
-
$1,113 CAD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$1,117 CAD
View
B+
Retailer 6
-
$1,128 CAD
View
B+
Retailer 7
-
$1,207 CAD
View
B+
Retailer 8
-
$1,249 CAD
View
B+
Retailer 9
-
$1,258 CAD
View
B+
Retailer 10
-
$1,324 CAD
View
B+
Retailer 11
-
$1,350 CAD
View
B+
Retailer 12
-
$1,563 CAD
View
B+
Retailer 13
-
$1,629 CAD
View
B
Retailer 14
-
$2,034 CAD
View
B
Retailer 15
-
$2,128 CAD
View
Most Expensive
B
Adiamor
D-51268865 · Nov 5
$3,355 CAD
$2,385 USD
View
15 more retailers have this diamond
Prices start from $758 CADSave up to $2,597 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
0.90ct Cushion
$758 CAD