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Cushion|Natural|GIA

1.51ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2556664337

Certificate GIA 2556664337

Diamond specifications and retailer prices

From $6,421 CAD
HK$35,900 HKD
As of November 1, 2026
Save $7,199 CAD (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $13,621 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 2556664337. Listed at 19 retailers as of October 28, 2026, with prices from $6,421 to $13,621, a $7,199 spread on the same certified stone. Queensmith lists it at $13,621. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556664337
Dimensions7.67 × 5.90 × 4.08 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.67 mm5.90 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556664337
Side View
Table 70.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.2%

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 1
Current: $13,621 CAD|Low: $6,368 CAD|High: $13,727 CAD|Avg: $8,993 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 12$6,421 CAD
Retailer 2$6,850 CAD
Retailer 13$7,157 CAD
Retailer 14$7,320 CAD
Retailer 6$7,561 CAD
Retailer 4$7,900 CAD
Retailer 7$8,007 CAD
Retailer 9$8,211 CAD
Retailer 5$8,777 CAD
Retailer 3$8,953 CAD
Retailer 8$9,348 CAD
Retailer 11$10,515 CAD
Retailer 10$12,609 CAD
Queensmith$13,621 CAD

23 data points across 14 retailers

19 retailers$6,421 CAD to $13,621 CAD

A
Cheapest Retailer
-
$6,421 CAD
HK$35,900 HKD
A
Retailer 2
-
$6,850 CAD
₹466,869 INR
View
A
Retailer 3
-
$7,157 CAD
$5,122 USD
View
A
Retailer 4
-
$7,320 CAD
SGD 7,079 SGD
View
A
Retailer 5
-
$7,561 CAD
SGD 7,312 SGD
View
B+
Retailer 6
-
$7,862 CAD
$5,626 USD
View
B+
Retailer 7
-
$7,867 CAD
$5,630 USD
View
B+
Retailer 8
-
$7,900 CAD
$5,653 USD
View
Final sale: no returns
B+
Retailer 9
-
$8,007 CAD
£4,512 GBP
View
B+
Retailer 10
-
$8,211 CAD
£4,627 GBP
View
Retailer 11
-
$8,560 CAD
A$9,424 AUD
View
Price last confirmed 29 days ago
Retailer 12
-
$8,614 CAD
$6,164 USD
View
Price last confirmed 17 days ago
B+
Retailer 13
-
$8,736 CAD
A$9,618 AUD
View
B+
Retailer 14
-
$8,777 CAD
$6,281 USD
View
B+
Retailer 15
-
$8,953 CAD
$6,407 USD
View
B+
Retailer 16
-
$9,348 CAD
€6,371 EUR
View
B
Retailer 17
-
$10,515 CAD
ZAR 121,565 ZAR
View
B
Retailer 18
-
$12,609 CAD
£7,105 GBP
View
Most Expensive
B
Queensmith
2556664337 · Oct 28
$13,621 CAD
£7,675 GBP
View
18 more retailers have this diamond
Prices start from $6,421 CADSave up to $7,199 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
$6,421 CAD