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Cushion|Natural|GIA

1.03ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 2245072355

Certificate GIA 2245072355

Diamond specifications and retailer prices

From £650 GBP
HK$6,800 HKD
As of November 1, 2026
Save £996 GBP (61%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,646 GBP at 18carati · As of October 31, 2026
View at 18carati

About this 1.03ct natural cushion diamond

This 1.03ct natural cushion sits in the classic one-carat band, graded I 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 2245072355. Listed at 8 retailers as of October 31, 2026, with prices from £650 to £1,646, a £996 spread on the same certified stone. 18carati lists it at £1,646. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle37.54°
OriginNatural
Grading LabGIA
CertificateGIA 2245072355
Dimensions6.84 × 5.26 × 3.67 mm
L/W Ratio1.30
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
6.84 mm5.26 mm1.03 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2245072355
Side View
Table 63.0%CrownGirdle: THN-THKPavilion 37.54°Culet: NoneDepth 69.9%

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 1
Current: £1,646 GBP|Low: £650 GBP|High: £1,781 GBP|Avg: £1,121 GBP|-5.4%
18carati
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 2£650 GBP
Retailer 6£833 GBP
Retailer 4£864 GBP
Retailer 8£926 GBP
Retailer 7£997 GBP
Retailer 3£1,225 GBP
Retailer 5£1,623 GBP
18carati£1,646 GBP

24 data points across 8 retailers

8 retailers£650 GBP to £1,646 GBP

A
Cheapest Retailer
-
£650 GBP
HK$6,800 HKD
A
Retailer 2
-
£833 GBP
€1,063 EUR
View
A
Retailer 3
-
£864 GBP
View
A
Retailer 4
-
£926 GBP
SGD 1,677 SGD
View
A
Retailer 5
-
£997 GBP
$1,336 USD
View
A
Retailer 6
-
£1,225 GBP
$1,642 USD
View
B+
Retailer 7
-
£1,623 GBP
View
Most Expensive
B+
18carati
AT-2355ISI1-0103 · Oct 31
£1,646 GBP
€2,100 EUR
View
7 more retailers have this diamond
Prices start from £650 GBPSave up to £996 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
£650 GBP