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Cushion|Natural|GIA

1.50ct K SI1 Cushion Natural Diamond

GD • K/SI1 • GIA 5231995738

Certificate GIA 5231995738

Diamond specifications and retailer prices

From £1,606 GBP
As of November 6, 2026
Save £2,085 GBP (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,691 GBP at MOH London · As of November 2, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5231995738. Listed at 16 retailers as of November 2, 2026, with prices from £1,606 to £3,691, a £2,085 spread on the same certified stone. MOH London lists it at £3,691. 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
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5231995738
Dimensions7.46 × 5.72 × 4.15 mm
L/W Ratio1.30
Girdle conditionFaceted
Top View
7.46 mm5.72 mm1.50 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231995738
Side View
Table 67.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 72.5%

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: £3,691 GBP|Low: £1,578 GBP|High: £3,876 GBP|Avg: £2,401 GBP|-4.8%
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
November 6, 2026
Retailer 4£1,606 GBP
Retailer 12£1,844 GBP
Retailer 11£1,929 GBP
Retailer 14£2,025 GBP
Retailer 2£2,027 GBP
Retailer 6£2,040 GBP
Retailer 10£2,199 GBP
Retailer 5£2,201 GBP
Retailer 7£2,218 GBP
Retailer 9£2,235 GBP
Retailer 3£2,362 GBP
Retailer 8£2,433 GBP
Retailer 13£2,551 GBP
Retailer 15£3,389 GBP
MOH London£3,691 GBP

24 data points across 15 retailers

16 retailers£1,606 GBP to £3,691 GBP

A
Cheapest Retailer
-
£1,606 GBP
B+
Retailer 2
-
£1,844 GBP
View
B+
Retailer 3
-
£1,929 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,025 GBP
View
B+
Retailer 5
-
£2,027 GBP
View
B+
Retailer 6
-
£2,040 GBP
View
B+
Retailer 7
-
£2,199 GBP
View
B+
Retailer 8
-
£2,201 GBP
View
B+
Retailer 9
-
£2,218 GBP
View
B+
Retailer 10
-
£2,235 GBP
View
B+
Retailer 11
-
£2,329 GBP
View
B+
Retailer 12
-
£2,362 GBP
View
B+
Retailer 13
-
£2,433 GBP
View
B+
Retailer 14
-
£2,551 GBP
View
B
Retailer 15
-
£3,389 GBP
View
Most Expensive
B
MOH London
0D01DAB4C · Nov 2
£3,691 GBP
View
15 more retailers have this diamond
Prices start from £1,606 GBPSave up to £2,085 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
£1,606 GBP