CaratHunter
Plans
Cushion|Natural|GIA

1.55ct I SI1 Cushion Natural Diamond

GD • I/SI1 • GIA 5513661456

Certificate GIA 5513661456

Diamond specifications and retailer prices

From £3,332 GBP
$4,464 USD
As of October 31, 2026
Save £2,973 GBP (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £6,305 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.55ct natural cushion diamond

This 1.55ct natural cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5513661456. Listed at 13 retailers as of October 29, 2026, with prices from £3,332 to £6,305, a £2,973 spread on the same certified stone. MOH London lists it at £6,305. 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

1.55
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5513661456
Dimensions7.02 × 6.64 × 4.56 mm
L/W Ratio1.06
Girdle conditionFaceted
Culet sizeNone
Cert comments
Clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Needle, Feather
Top View
7.02 mm6.64 mm1.55 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5513661456
Side View
Table 63.0%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: Oct 31
Current: £6,305 GBP|Low: £3,332 GBP|High: £7,331 GBP|Avg: £4,272 GBP|-14.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 12£3,332 GBP
Retailer 11£3,434 GBP
Retailer 3£3,635 GBP
Retailer 9£3,694 GBP
Retailer 2£3,720 GBP
Retailer 5£3,736 GBP
Retailer 7£3,930 GBP
Retailer 10£3,938 GBP
Retailer 6£4,455 GBP
Retailer 4£4,796 GBP
Retailer 8£4,840 GBP
MOH London£6,305 GBP

25 data points across 12 retailers

13 retailers£3,332 GBP to £6,305 GBP

A
Cheapest Retailer
-
£3,332 GBP
$4,464 USD
B+
Retailer 2
-
£3,434 GBP
$4,601 USD
View
B+
Retailer 3
-
£3,635 GBP
$4,870 USD
View
Final sale: no returns
B+
Retailer 4
-
£3,694 GBP
$4,950 USD
View
B+
Retailer 5
-
£3,720 GBP
₹474,653 INR
View
B+
Retailer 6
-
£3,736 GBP
View
B+
Retailer 7
-
£3,930 GBP
View
Retailer 8
-
£3,938 GBP
$5,276 USD
View
Price last confirmed 9 days ago
B
Retailer 9
-
£4,455 GBP
€5,685 EUR
View
Retailer 10
-
£4,465 GBP
$5,983 USD
View
Price last confirmed 90 days ago
Retailer 11
-
£4,796 GBP
A$9,887 AUD
View
Price last confirmed 21 days ago
B
Retailer 12
-
£4,840 GBP
ZAR 104,770 ZAR
View
Most Expensive
B
MOH London
83D43D9F6 · Oct 29
£6,305 GBP
View
12 more retailers have this diamond
Prices start from £3,332 GBPSave up to £2,973 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
1.55ct Cushion
£3,332 GBP