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Cushion|Natural|GIA

1.50ct K SI2 Cushion Natural Diamond

ID • K/SI2 • GIA 2558676335

Certificate GIA 2558676335

Diamond specifications and retailer prices

From £1,874 GBP
As of November 6, 2026
Save £2,268 GBP (55%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,142 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2558676335. Listed at 12 retailers as of November 4, 2026, with prices from £1,874 to £4,142, a £2,268 spread on the same certified stone. MOH London lists it at £4,142. 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
K
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558676335
Dimensions7.60 × 5.83 × 4.00 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal, Needle, Indented Natural
Top View
7.60 mm5.83 mm1.50 ctK / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2558676335
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.6%

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: £4,142 GBP|Low: £1,865 GBP|High: £4,243 GBP|Avg: £2,622 GBP|-2.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8£1,874 GBP
Retailer 2£1,978 GBP
Retailer 5£2,209 GBP
Retailer 10£2,499 GBP
Retailer 6£2,569 GBP
Retailer 9£2,590 GBP
Retailer 4£2,603 GBP
Retailer 7£2,652 GBP
Retailer 3£2,890 GBP
MOH London£4,142 GBP

32 data points across 10 retailers

12 retailers£1,874 GBP to £4,142 GBP

A
Cheapest Retailer
-
£1,874 GBP
A
Retailer 2
-
£1,978 GBP
View
A
Retailer 3
-
£2,209 GBP
View
B+
Retailer 4
-
£2,326 GBP
View
Retailer 5
-
£2,499 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£2,569 GBP
View
B+
Retailer 7
-
£2,578 GBP
View
B+
Retailer 8
-
£2,590 GBP
View
B+
Retailer 9
-
£2,603 GBP
View
B+
Retailer 10
-
£2,652 GBP
View
B+
Retailer 11
-
£2,890 GBP
View
Most Expensive
B
MOH London
B313B6A2B · Nov 4
£4,142 GBP
View
11 more retailers have this diamond
Prices start from £1,874 GBPSave up to £2,268 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
£1,874 GBP