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Cushion|Natural|GIA

0.90ct G SI2 Cushion Natural Diamond

VG • G/SI2 • GIA 1428328163

Certificate GIA 1428328163

Diamond specifications and retailer prices

From £739 GBP
$990 USD
As of October 31, 2026
Save £737 GBP (50%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,099 GBP at Moon Ocean · As of September 30, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1428328163. Listed at 11 retailers as of October 29, 2026, with a 100% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle39.06°
Pavilion angle48.74°
OriginNatural
Grading LabGIA
CertificateGIA 1428328163
Dimensions5.54 × 5.13 × 3.56 mm
L/W Ratio1.08
Key to symbols
Crystal
Top View
5.54 mm5.13 mm0.90 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1428328163
Side View
Table 61.0%Crown 39.06°Girdle: MED-THKPavilion 48.74°Culet: NoneDepth 69.4%

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: Oct 31
Current: £2,099 GBP|Low: £678 GBP|High: £2,099 GBP|Avg: £1,030 GBP
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 7£739 GBP
Retailer 10£767 GBP
Retailer 8£769 GBP
Retailer 6£802 GBP
Retailer 11£886 GBP
Retailer 3£901 GBP
Retailer 9£925 GBP
Retailer 2£945 GBP
Retailer 4£1,124 GBP
Retailer 5£1,476 GBP
Moon Ocean£2,099 GBP

43 data points across 11 retailers

11 retailers£739 GBP to £1,476 GBP

A
Cheapest Retailer
-
£739 GBP
$990 USD
Final sale: no returns
A
Retailer 2
-
£767 GBP
$1,028 USD
View
A
Retailer 3
-
£769 GBP
$1,030 USD
View
A
Retailer 4
-
£802 GBP
$1,074 USD
View
A
Retailer 5
-
£886 GBP
$1,187 USD
View
A
Retailer 6
-
£901 GBP
$1,208 USD
View
A
Retailer 7
-
£925 GBP
$1,239 USD
View
A
Retailer 8
-
£945 GBP
View
B+
Retailer 9
-
£1,124 GBP
€1,434 EUR
View
B+
Retailer 10
-
£1,476 GBP
View
Most Expensive
Moon Ocean
NVN-317C05FF1-163 · Sep 30
£2,099 GBP
View
Price last confirmed 32 days ago
10 more retailers have this diamond
Prices start from £739 GBPSave up to £737 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
£739 GBP