CaratHunter
Plans
Cushion|Natural|GIA

0.90ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 1333477774

Certificate GIA 1333477774

Diamond specifications and retailer prices

From £637 GBP
$854 USD
As of November 2, 2026
Save £694 GBP (52%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,331 GBP at Moon Ocean · As of November 1, 2026
View at Moon Ocean

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1333477774. Listed at 15 retailers as of November 1, 2026, with prices from £637 to £1,331, a £694 spread on the same certified stone. Moon Ocean lists it at £1,331. 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

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

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1333477774
Dimensions5.29 × 5.09 × 3.86 mm
L/W Ratio1.04
Key to symbols
Twinning Wisp, Feather, Crystal
Top View
5.29 mm5.09 mm0.90 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1333477774
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 75.9%

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 2
Current: £1,331 GBP|Low: £637 GBP|High: £1,349 GBP|Avg: £958 GBP|-1.2%
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 7£637 GBP
Retailer 9£692 GBP
Retailer 6£806 GBP
Retailer 2£809 GBP
Retailer 4£893 GBP
Retailer 5£1,013 GBP
Retailer 8£1,040 GBP
Retailer 3£1,267 GBP
Moon Ocean£1,331 GBP

37 data points across 9 retailers

15 retailers£637 GBP to £1,331 GBP

A
Cheapest Retailer
-
£637 GBP
$854 USD
Final sale: no returns
A
Retailer 2
-
£675 GBP
$905 USD
View
A
Retailer 3
-
£692 GBP
$927 USD
View
A
Retailer 4
-
£699 GBP
$937 USD
View
B+
Retailer 5
-
£791 GBP
$1,060 USD
View
B+
Retailer 6
-
£806 GBP
$1,080 USD
View
B+
Retailer 7
-
£809 GBP
View
B+
Retailer 8
-
£846 GBP
$1,133 USD
View
B+
Retailer 9
-
£851 GBP
$1,140 USD
View
B+
Retailer 10
-
£892 GBP
A$1,838 AUD
View
B+
Retailer 11
-
£893 GBP
€1,140 EUR
View
B+
Retailer 12
-
£1,013 GBP
ZAR 21,931 ZAR
View
Retailer 13
-
£1,040 GBP
A$2,144 AUD
View
Price last confirmed 28 days ago
B
Retailer 14
-
£1,267 GBP
View
Most Expensive
B
Moon Ocean
NVN-22F2EE72B-774 · Nov 1
£1,331 GBP
View
14 more retailers have this diamond
Prices start from £637 GBPSave up to £694 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
0.90ct Cushion
£637 GBP