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Cushion|Natural|GIA

1.03ct D SI2 Cushion Natural Diamond

VG • D/SI2 • GIA 1236839340

Certificate GIA 1236839340

Diamond specifications and retailer prices

From £2,341 GBP
As of November 5, 2026
Save £900 GBP (28%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,241 GBP at Washington Diamond · As of November 6, 2026
View at Washington Diamond

About this 1.03ct natural cushion diamond

This 1.03ct natural cushion sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1236839340. Listed at 10 retailers as of November 5, 2026, with prices from £2,341 to £3,241, a £900 spread on the same certified stone. Washington Diamond lists it at £3,241. 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

1.03
Carat
D
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1236839340
Dimensions6.82 × 5.32 × 3.61 mm
L/W Ratio1.28
Top View
6.82 mm5.32 mm1.03 ctD / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1236839340
Side View
Table 62.0%CrownGirdle: Very ThickPavilionCulet: NDepth 67.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,666 GBP|Low: £2,313 GBP|High: £3,241 GBP|Avg: £2,622 GBP|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Washington Diamond
November 7, 2026
Retailer 3£2,341 GBP
Retailer 4£2,458 GBP
Retailer 5£2,640 GBP
Retailer 1£2,666 GBP
Retailer 2£3,013 GBP
Washington Diamond£3,241 GBP

44 data points across 6 retailers

10 retailers£2,341 GBP to £3,241 GBP

B+
Cheapest Retailer
-
£2,341 GBP
B
Retailer 2
-
£2,361 GBP
View
B+
Retailer 3
-
£2,458 GBP
View
B
Retailer 4
-
£2,468 GBP
View
B
Retailer 5
-
£2,540 GBP
View
B
Retailer 6
-
£2,640 GBP
View
B
Retailer 7
-
£2,666 GBP
View
B
Retailer 8
-
£2,701 GBP
View
B
Retailer 9
-
£3,013 GBP
View
Most Expensive
Washington Diamond
1950919656 · Nov 6
£3,241 GBP
$4,338 USD
View
9 more retailers have this diamond
Prices start from £2,341 GBPSave up to £900 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.

B+
1.03ct Cushion
£2,341 GBP