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Cushion|Natural|GIA

1.54ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 5546598187

Certificate GIA 5546598187

Diamond specifications and retailer prices

From £1,674 GBP
As of November 3, 2026
Save £772 GBP (32%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £2,446 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 1.54ct natural cushion diamond

This 1.54ct 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 5546598187. Listed at 5 retailers as of November 3, 2026, with prices from £1,674 to £2,446, a £772 spread on the same certified stone. 77 Diamonds lists it at £2,446. 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

1.54
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 5546598187
Dimensions7.52 × 5.79 × 3.96 mm
L/W Ratio1.30
Top View
7.52 mm5.79 mm1.54 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5546598187
Side View
Table 59.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 68.4%

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 3
Current: £2,446 GBP|Low: £1,674 GBP|High: £4,027 GBP|Avg: £2,267 GBP|-1.2%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3£1,674 GBP
Retailer 5£1,683 GBP
Retailer 4£1,756 GBP
Retailer 6£1,849 GBP
Retailer 8£2,221 GBP
Retailer 7£2,285 GBP
Retailer 2£2,409 GBP
77 Diamonds£2,446 GBP
Retailer 9£4,027 GBP

33 data points across 9 retailers

5 retailers£1,674 GBP to £2,446 GBP

A
Cheapest Retailer
-
£1,674 GBP
A
Retailer 2
-
£1,683 GBP
View
A
Retailer 3
-
£1,756 GBP
View
B+
Retailer 4
-
£2,409 GBP
View
Most Expensive
B+
77 Diamonds
CUSMB3BRXPXGZ · Nov 6
£2,446 GBP
View
4 more retailers have this diamond
Prices start from £1,674 GBPSave up to £772 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
1.54ct Cushion
£1,674 GBP