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Cushion|Natural|GIA

1.50ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 1549696767

Certificate GIA 1549696767

Diamond specifications and retailer prices

From £1,243 GBP
As of November 6, 2026
Save £1,942 GBP (61%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,185 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1549696767. Listed at 19 retailers as of November 4, 2026, with prices from £1,243 to £3,185, a £1,942 spread on the same certified stone. MOH London lists it at £3,185. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle39.4°
OriginNatural
Grading LabGIA
CertificateGIA 1549696767
Dimensions7.22 × 6.21 × 4.29 mm
L/W Ratio1.16
Girdle conditionFaceted
Top View
7.22 mm6.21 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1549696767
Side View
Table 69.0%CrownGirdle: THK-VTKPavilion 39.4°Culet: NoneDepth 69.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,185 GBP|Low: £1,243 GBP|High: £3,553 GBP|Avg: £2,042 GBP|-10.4%
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 6, 2026
Retailer 12£1,243 GBP
Retailer 2£1,498 GBP
Retailer 3£1,573 GBP
Retailer 13£1,574 GBP
Retailer 16£1,732 GBP
Retailer 15£1,756 GBP
Retailer 17£1,763 GBP
Retailer 5£1,768 GBP
Retailer 9£1,807 GBP
Retailer 7£1,810 GBP
Retailer 4£1,812 GBP
Retailer 6£1,831 GBP
Retailer 10£1,883 GBP
Retailer 8£1,999 GBP
Retailer 14£2,015 GBP
Retailer 18£2,225 GBP
Retailer 11£2,692 GBP
MOH London£3,185 GBP

22 data points across 18 retailers

19 retailers£1,243 GBP to £3,185 GBP

A
Cheapest Retailer
-
£1,243 GBP
A
Retailer 2
-
£1,498 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,573 GBP
View
A
Retailer 4
-
£1,574 GBP
View
A
Retailer 5
-
£1,732 GBP
View
A
Retailer 6
-
£1,756 GBP
View
A
Retailer 7
-
£1,763 GBP
View
A
Retailer 8
-
£1,768 GBP
View
Retailer 9
-
£1,807 GBP
View
Price last confirmed 8 days ago
Retailer 10
-
£1,810 GBP
View
Price last confirmed 9 days ago
A
Retailer 11
-
£1,812 GBP
View
Retailer 12
-
£1,831 GBP
View
Price last confirmed 9 days ago
Retailer 13
-
£1,883 GBP
View
Price last confirmed 7 days ago
Retailer 14
-
£1,999 GBP
View
Price last confirmed 17 days ago
A
Retailer 15
-
£2,015 GBP
View
B+
Retailer 16
-
£2,179 GBP
View
A
Retailer 17
-
£2,225 GBP
View
B+
Retailer 18
-
£2,692 GBP
View
Most Expensive
B+
MOH London
6DCC2DB2F · Nov 4
£3,185 GBP
View
18 more retailers have this diamond
Prices start from £1,243 GBPSave up to £1,942 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
£1,243 GBP