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Cushion|Natural|GIA

1.51ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2556191991

Certificate GIA 2556191991

Diamond specifications and retailer prices

From $6,511 CAD
HK$36,400 HKD
As of November 1, 2026
Save $7,208 CAD (53%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $13,718 CAD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded F 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 2556191991. Listed at 18 retailers as of October 28, 2026, with prices from $6,511 to $13,718, a $7,208 spread on the same certified stone. Queensmith lists it at $13,718. 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

1.51
Carat
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2556191991
Dimensions8.09 × 5.59 × 3.82 mm
L/W Ratio1.45
Top View
8.09 mm5.59 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556191991
Side View
Table 65.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 68.3%

Caratlytics Score

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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 1
Current: $13,718 CAD|Low: $6,439 CAD|High: $13,816 CAD|Avg: $9,116 CAD|+1.9%
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
November 2, 2026
Retailer 11$6,511 CAD
Retailer 6$6,622 CAD
Retailer 8$6,939 CAD
Retailer 13$7,248 CAD
Retailer 14$7,415 CAD
Retailer 4$7,598 CAD
Retailer 7$8,318 CAD
Retailer 12$8,671 CAD
Retailer 5$8,890 CAD
Retailer 3$9,065 CAD
Retailer 2$9,473 CAD
Retailer 10$10,653 CAD
Retailer 9$12,774 CAD
Queensmith$13,718 CAD

29 data points across 14 retailers

18 retailers$6,511 CAD to $13,718 CAD

A
Cheapest Retailer
-
$6,511 CAD
HK$36,400 HKD
A
Retailer 2
-
$6,622 CAD
SGD 6,404 SGD
View
A
Retailer 3
-
$6,939 CAD
₹472,908 INR
View
A
Retailer 4
-
$7,248 CAD
$5,187 USD
View
A
Retailer 5
-
$7,415 CAD
SGD 7,171 SGD
View
A
Retailer 6
-
$7,598 CAD
$5,437 USD
View
B+
Retailer 7
-
$7,964 CAD
$5,699 USD
View
B+
Retailer 8
-
$7,965 CAD
$5,700 USD
View
B+
Retailer 9
-
$8,318 CAD
£4,687 GBP
View
B+
Retailer 10
-
$8,671 CAD
$6,205 USD
View
Retailer 11
-
$8,672 CAD
A$9,547 AUD
View
Price last confirmed 29 days ago
B+
Retailer 12
-
$8,881 CAD
A$9,778 AUD
View
B+
Retailer 13
-
$8,890 CAD
$6,362 USD
View
B+
Retailer 14
-
$9,065 CAD
$6,487 USD
View
B+
Retailer 15
-
$9,473 CAD
€6,456 EUR
View
B+
Retailer 16
-
$10,653 CAD
ZAR 123,162 ZAR
View
B
Retailer 17
-
$12,774 CAD
£7,198 GBP
View
Most Expensive
B
Queensmith
2556191991 · Oct 28
$13,718 CAD
£7,730 GBP
View
17 more retailers have this diamond
Prices start from $6,511 CADSave up to $7,208 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
1.51ct Cushion
$6,511 CAD