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Cushion|Natural|GIA

1.50ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6555133265

Certificate GIA 6555133265

Diamond specifications and retailer prices

From £3,720 GBP
As of November 6, 2026
Save £3,567 GBP (49%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £7,600 GBP at Queensmith · As of October 28, 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 6555133265. Listed at 19 retailers as of November 4, 2026, with a 96% 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555133265
Dimensions7.53 × 5.80 × 4.01 mm
L/W Ratio1.30
Top View
7.53 mm5.80 mm1.50 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555133265
Side View
Table 64.0%CrownGirdle: THK-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 6
Current: £7,600 GBP|Low: £3,691 GBP|High: £7,657 GBP|Avg: £5,152 GBP|+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 12£3,720 GBP
Retailer 7£3,926 GBP
Retailer 13£4,140 GBP
Retailer 3£4,319 GBP
Retailer 10£4,404 GBP
Retailer 4£4,578 GBP
Retailer 14£4,578 GBP
Retailer 2£4,722 GBP
Retailer 5£4,871 GBP
Retailer 6£5,079 GBP
Retailer 8£5,389 GBP
Retailer 9£6,052 GBP
Retailer 11£7,287 GBP
Queensmith£7,600 GBP

31 data points across 14 retailers

19 retailers£3,720 GBP to £7,287 GBP

A
Cheapest Retailer
-
£3,720 GBP
A
Retailer 2
-
£3,926 GBP
View
B+
Retailer 3
-
£4,140 GBP
View
Retailer 4
-
£4,268 GBP
View
Price last confirmed 24 days ago
B+
Retailer 5
-
£4,319 GBP
View
B+
Retailer 6
-
£4,404 GBP
View
B+
Retailer 7
-
£4,554 GBP
View
B+
Retailer 8
-
£4,557 GBP
View
B+
Retailer 9
-
£4,578 GBP
View
Final sale: no returns
Retailer 10
-
£4,578 GBP
View
Price last confirmed 9 days ago
B+
Retailer 11
-
£4,722 GBP
View
B+
Retailer 12
-
£4,871 GBP
View
Retailer 13
-
£4,893 GBP
View
Price last confirmed 34 days ago
B+
Retailer 14
-
£5,049 GBP
View
B+
Retailer 15
-
£5,079 GBP
View
B+
Retailer 16
-
£5,389 GBP
View
B+
Retailer 17
-
£6,052 GBP
View
B
Retailer 18
-
£7,287 GBP
View
Most Expensive
Queensmith
6555133265 · Oct 28
£7,600 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from £3,720 GBPSave up to £3,567 GBP

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
£3,720 GBP