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Cushion|Natural|GIA

1.50ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6551751587

Certificate GIA 6551751587

Diamond specifications and retailer prices

From €4,299 EUR
As of November 6, 2026
Save €4,102 EUR (49%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €8,895 EUR at Queensmith · As of October 22, 2026
View at Queensmith

About this 1.5ct natural cushion diamond

This 1.5ct 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 6551751587. Listed at 19 retailers as of November 6, 2026, with a 95% 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

1.50
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551751587
Dimensions7.45 × 5.66 × 3.94 mm
L/W Ratio1.32
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Natural
Top View
7.45 mm5.66 mm1.50 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551751587
Side View
Table 66.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 69.6%

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: €8,895 EUR|Low: €4,264 EUR|High: €9,003 EUR|Avg: €5,979 EUR|+1.4%
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 7, 2026
Retailer 13€4,299 EUR
Retailer 9€4,543 EUR
Retailer 14€4,788 EUR
Retailer 12€5,092 EUR
Retailer 3€5,292 EUR
Retailer 2€5,369 EUR
Retailer 8€5,459 EUR
Retailer 4€5,643 EUR
Retailer 6€5,702 EUR
Retailer 5€5,874 EUR
Retailer 10€6,229 EUR
Retailer 11€6,994 EUR
Retailer 7€8,401 EUR
Queensmith€8,895 EUR

25 data points across 14 retailers

19 retailers€4,299 EUR to €8,401 EUR

A
Cheapest Retailer
-
€4,299 EUR
A
Retailer 2
-
€4,543 EUR
View
A
Retailer 3
-
€4,788 EUR
View
Retailer 4
-
€4,935 EUR
View
Price last confirmed 24 days ago
B+
Retailer 5
-
€5,092 EUR
View
B+
Retailer 6
-
€5,266 EUR
View
B+
Retailer 7
-
€5,266 EUR
View
B+
Retailer 8
-
€5,292 EUR
View
Final sale: no returns
B+
Retailer 9
-
€5,369 EUR
View
B+
Retailer 10
-
€5,459 EUR
View
B+
Retailer 11
-
€5,643 EUR
View
Retailer 12
-
€5,702 EUR
View
Price last confirmed 29 days ago
Retailer 13
-
€5,768 EUR
View
Price last confirmed 22 days ago
B+
Retailer 14
-
€5,874 EUR
View
B+
Retailer 15
-
€5,948 EUR
View
B+
Retailer 16
-
€6,229 EUR
View
B+
Retailer 17
-
€6,994 EUR
View
B
Retailer 18
-
€8,401 EUR
View
Most Expensive
Queensmith
6551751587 · Oct 22
€8,895 EUR
£7,820 GBP
View
Price last confirmed 16 days ago
18 more retailers have this diamond
Prices start from €4,299 EURSave up to €4,102 EUR

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
1.50ct Cushion
€4,299 EUR