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Cushion|Natural|GIA

0.90ct I SI1 Cushion Natural Diamond

VG • I/SI1 • GIA 1418316260

Certificate GIA 1418316260

Diamond specifications and retailer prices

From £506 GBP
$678 USD
As of November 2, 2026
Save £659 GBP (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,165 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1418316260. Listed at 17 retailers as of November 1, 2026, with prices from £506 to £1,165, a £659 spread on the same certified stone. Moon Ocean lists it at £1,165. 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
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1418316260
Dimensions5.89 × 5.23 × 3.43 mm
L/W Ratio1.13
Culet sizeNone
Top View
5.89 mm5.23 mm0.90 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1418316260
Side View
Table 67.0%CrownGirdle: MED-MEDPavilionCulet: NoneDepth 65.6%

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: £1,165 GBP|Low: £470 GBP|High: £1,231 GBP|Avg: £759 GBP|-5.2%
Moon Ocean
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
November 2, 2026
Retailer 14£506 GBP
Retailer 6£515 GBP
Retailer 13£549 GBP
Retailer 11£560 GBP
Retailer 15£628 GBP
Retailer 4£628 GBP
Retailer 5£679 GBP
Retailer 12£679 GBP
Retailer 3£702 GBP
Retailer 2£729 GBP
Retailer 8£856 GBP
Retailer 9£887 GBP
Retailer 7£949 GBP
Retailer 10£1,115 GBP
Moon Ocean£1,165 GBP

34 data points across 15 retailers

17 retailers£506 GBP to £1,165 GBP

A
Cheapest Retailer
-
£506 GBP
$678 USD
Final sale: no returns
A
Retailer 2
-
£515 GBP
$690 USD
View
A
Retailer 3
-
£549 GBP
$735 USD
View
A
Retailer 4
-
£560 GBP
$750 USD
View
Retailer 5
-
£571 GBP
$765 USD
View
Price last confirmed 34 days ago
Retailer 6
-
£580 GBP
$777 USD
View
Price last confirmed 27 days ago
B+
Retailer 7
-
£628 GBP
$841 USD
View
B+
Retailer 8
-
£628 GBP
$842 USD
View
B+
Retailer 9
-
£679 GBP
$910 USD
View
B+
Retailer 10
-
£679 GBP
$910 USD
View
B+
Retailer 11
-
£702 GBP
$940 USD
View
A
Retailer 12
-
£729 GBP
View
A
Retailer 13
-
£856 GBP
€1,092 EUR
View
B+
Retailer 14
-
£887 GBP
ZAR 19,195 ZAR
View
Retailer 15
-
£949 GBP
A$1,955 AUD
View
Price last confirmed 29 days ago
B+
Retailer 16
-
£1,115 GBP
View
Most Expensive
B+
Moon Ocean
NVN-308686D39-260 · Nov 1
£1,165 GBP
View
16 more retailers have this diamond
Prices start from £506 GBPSave up to £659 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
£506 GBP