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Cushion|Natural|GIA

1.50ct F SI1 Cushion Natural Diamond

VG • F/SI1 • GIA 6551393833

Certificate GIA 6551393833

Diamond specifications and retailer prices

From £3,174 GBP
As of November 6, 2026
Save £3,611 GBP (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £6,785 GBP at MOH London · As of November 4, 2026
View at MOH London

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551393833. Listed at 20 retailers as of November 4, 2026, with prices from £3,174 to £6,785, a £3,611 spread on the same certified stone. MOH London lists it at £6,785. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551393833
Dimensions7.55 × 6.01 × 4.13 mm
L/W Ratio1.26
Girdle conditionFaceted
Top View
7.55 mm6.01 mm1.50 ctF / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551393833
Side View
Table 67.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 68.7%

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: £6,785 GBP|Low: £3,127 GBP|High: £6,834 GBP|Avg: £4,220 GBP|+4.2%
MOH London
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
Retailer 16
Retailer 17
Retailer 18
November 7, 2026
Retailer 7£3,174 GBP
Retailer 10£3,269 GBP
Retailer 17£3,399 GBP
Retailer 9£3,572 GBP
Retailer 16£3,578 GBP
Retailer 11£3,606 GBP
Retailer 15£3,631 GBP
Retailer 3£3,635 GBP
Retailer 5£3,773 GBP
Retailer 8£3,773 GBP
Retailer 4£3,780 GBP
Retailer 2£3,954 GBP
Retailer 12£3,975 GBP
Retailer 6£4,096 GBP
Retailer 13£4,806 GBP
Retailer 14£5,211 GBP
Retailer 18£6,657 GBP
MOH London£6,785 GBP

20 data points across 18 retailers

20 retailers£3,174 GBP to £6,785 GBP

A
Cheapest Retailer
-
£3,174 GBP
A
Retailer 2
-
£3,269 GBP
View
A
Retailer 3
-
£3,399 GBP
View
A
Retailer 4
-
£3,572 GBP
View
Final sale: no returns
A
Retailer 5
-
£3,578 GBP
View
A
Retailer 6
-
£3,606 GBP
View
A
Retailer 7
-
£3,631 GBP
View
A
Retailer 8
-
£3,635 GBP
View
A
Retailer 9
-
£3,773 GBP
View
A
Retailer 10
-
£3,773 GBP
View
A
Retailer 11
-
£3,780 GBP
View
A
Retailer 12
-
£3,954 GBP
View
B+
Retailer 13
-
£3,975 GBP
View
B+
Retailer 14
-
£4,096 GBP
View
B+
Retailer 15
-
£4,418 GBP
View
Retailer 16
-
£4,519 GBP
View
Price last confirmed 34 days ago
B+
Retailer 17
-
£4,806 GBP
View
B+
Retailer 18
-
£5,211 GBP
View
B
Retailer 19
-
£6,657 GBP
View
Most Expensive
B
MOH London
0B971148A · Nov 4
£6,785 GBP
View
19 more retailers have this diamond
Prices start from £3,174 GBPSave up to £3,611 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
£3,174 GBP