CaratHunter
Plans
Cushion|Natural|GIA

1.03ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 5543780545

Certificate GIA 5543780545

Diamond specifications and retailer prices

From £889 GBP
As of November 6, 2026
Save £1,089 GBP (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,978 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.03ct natural cushion diamond

This 1.03ct natural cushion sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5543780545. Listed at 21 retailers as of November 4, 2026, with prices from £889 to £1,978, a £1,089 spread on the same certified stone. MOH London lists it at £1,978. 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

1.03
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle38.3°
OriginNatural
Grading LabGIA
CertificateGIA 5543780545
Dimensions6.74 × 5.37 × 3.70 mm
L/W Ratio1.26
Top View
6.74 mm5.37 mm1.03 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5543780545
Side View
Table 64.0%CrownGirdle: STK-VTKPavilion 38.3°Culet: NoneDepth 68.9%

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: £1,978 GBP|Low: £879 GBP|High: £2,005 GBP|Avg: £1,232 GBP|-1.3%
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
Retailer 19
November 6, 2026
Retailer 6£889 GBP
Retailer 8£946 GBP
Retailer 9£990 GBP
Retailer 19£997 GBP
Retailer 2£1,009 GBP
Retailer 18£1,057 GBP
Retailer 12£1,063 GBP
Retailer 4£1,076 GBP
Retailer 13£1,098 GBP
Retailer 11£1,124 GBP
Retailer 15£1,132 GBP
Retailer 7£1,186 GBP
Retailer 10£1,188 GBP
Retailer 5£1,240 GBP
Retailer 17£1,250 GBP
Retailer 16£1,381 GBP
Retailer 14£1,538 GBP
Retailer 3£1,843 GBP
MOH London£1,978 GBP

20 data points across 19 retailers

21 retailers£889 GBP to £1,978 GBP

A
Cheapest Retailer
-
£889 GBP
A
Retailer 2
-
£946 GBP
View
Final sale: no returns
A
Retailer 3
-
£990 GBP
View
A
Retailer 4
-
£997 GBP
View
A
Retailer 5
-
£1,009 GBP
View
A
Retailer 6
-
£1,057 GBP
View
A
Retailer 7
-
£1,063 GBP
View
A
Retailer 8
-
£1,076 GBP
View
A
Retailer 9
-
£1,098 GBP
View
A
Retailer 10
-
£1,124 GBP
View
A
Retailer 11
-
£1,132 GBP
View
A
Retailer 12
-
£1,186 GBP
View
Retailer 13
-
£1,188 GBP
View
Price last confirmed 18 days ago
A
Retailer 14
-
£1,240 GBP
View
A
Retailer 15
-
£1,250 GBP
View
A
Retailer 16
-
£1,319 GBP
View
A
Retailer 17
-
£1,381 GBP
View
Retailer 18
-
£1,477 GBP
View
Price last confirmed 33 days ago
B+
Retailer 19
-
£1,538 GBP
View
B+
Retailer 20
-
£1,843 GBP
View
Most Expensive
B
MOH London
1941D2454 · Nov 4
£1,978 GBP
View
20 more retailers have this diamond
Prices start from £889 GBPSave up to £1,089 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
1.03ct Cushion
£889 GBP