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Cushion|Natural|GIA

0.90ct J SI1 Cushion Natural Diamond

GD • J/SI1 • GIA 6502303819

Certificate GIA 6502303819

Diamond specifications and retailer prices

From £1,152 GBP
SGD 2,086 SGD
As of October 31, 2026
Save £2,236 GBP (66%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,388 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.9ct natural cushion diamond

This 0.9ct natural cushion sits in the just-under-one-carat band, graded J 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 6502303819. Listed at 17 retailers as of October 30, 2026, with prices from £1,152 to £3,388, a £2,236 spread on the same certified stone. NZ Jewellers lists it at £3,388. 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

0.90
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6502303819
Dimensions9.30 × 5.13 × 3.31 mm
L/W Ratio1.81
Top View
9.30 mm5.13 mm0.90 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6502303819
Side View
Table 57.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 64.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £2,839 GBP|Low: £1,152 GBP|High: £2,873 GBP|Avg: £1,889 GBP|-0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 5£1,152 GBP
Retailer 8£1,416 GBP
Retailer 7£1,496 GBP
Retailer 2£1,778 GBP
Retailer 6£1,993 GBP
Retailer 4£2,023 GBP
Retailer 3£2,390 GBP
Retailer 1£2,839 GBP

43 data points across 8 retailers

17 retailers£1,152 GBP to £3,388 GBP

B
Cheapest Retailer
-
£1,152 GBP
SGD 2,086 SGD
B
Retailer 2
-
£1,326 GBP
$1,777 USD
View
B
Retailer 3
-
£1,416 GBP
$1,897 USD
View
B
Retailer 4
-
£1,468 GBP
$1,967 USD
View
B
Retailer 5
-
£1,468 GBP
$1,967 USD
View
B
Retailer 6
-
£1,496 GBP
$2,005 USD
View
B
Retailer 7
-
£1,536 GBP
$2,058 USD
View
B
Retailer 8
-
£1,694 GBP
$2,270 USD
View
B
Retailer 9
-
£1,778 GBP
View
C
Retailer 10
-
£1,852 GBP
$2,481 USD
View
C
Retailer 11
-
£1,866 GBP
CA$3,473 CAD
View
C
Retailer 12
-
£1,918 GBP
$2,570 USD
View
Retailer 13
-
£1,993 GBP
A$4,108 AUD
View
Price last confirmed 25 days ago
B
Retailer 14
-
£2,023 GBP
€2,582 EUR
View
C
Retailer 15
-
£2,390 GBP
ZAR 51,739 ZAR
View
C
Retailer 16
-
£2,839 GBP
View
Most Expensive
C
NZ Jewellers
14cd19e9-c546-477e-96c4-1faa9760a5fb · Oct 30
£3,388 GBP
$4,539 USD
View
16 more retailers have this diamond
Prices start from £1,152 GBPSave up to £2,236 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
0.90ct Cushion
£1,152 GBP