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Cushion|Natural|GIA

0.90ct G SI2 Cushion Natural Diamond

ID • G/SI2 • GIA 6521621544

Certificate GIA 6521621544

Diamond specifications and retailer prices

From £821 GBP
$1,100 USD
As of October 31, 2026
Save £1,624 GBP (66%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,445 GBP at Queensmith · As of October 28, 2026
View at Queensmith

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6521621544. Listed at 10 retailers as of October 28, 2026, with prices from £821 to £2,445, a £1,624 spread on the same certified stone. Queensmith lists it at £2,445. 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
G
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6521621544
Dimensions6.67 × 4.88 × 3.34 mm
L/W Ratio1.37
Top View
6.67 mm4.88 mm0.90 ctG / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6521621544
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.5%

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: £2,445 GBP|Low: £779 GBP|High: £2,450 GBP|Avg: £1,238 GBP|+2.2%
Queensmith
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£821 GBP
Retailer 9£828 GBP
Retailer 10£921 GBP
Retailer 8£933 GBP
Retailer 6£957 GBP
Retailer 11£990 GBP
Retailer 4£1,122 GBP
Retailer 3£1,270 GBP
Retailer 5£1,371 GBP
Retailer 2£1,799 GBP
Queensmith£2,445 GBP

43 data points across 11 retailers

10 retailers£821 GBP to £2,445 GBP

A
Cheapest Retailer
-
£821 GBP
$1,100 USD
Final sale: no returns
A
Retailer 2
-
£828 GBP
$1,110 USD
View
A
Retailer 3
-
£933 GBP
$1,250 USD
View
A
Retailer 4
-
£957 GBP
$1,282 USD
View
A
Retailer 5
-
£990 GBP
$1,327 USD
View
A
Retailer 6
-
£1,122 GBP
View
B+
Retailer 7
-
£1,270 GBP
A$2,618 AUD
View
B+
Retailer 8
-
£1,371 GBP
€1,749 EUR
View
B+
Retailer 9
-
£1,799 GBP
View
Most Expensive
B
Queensmith
6521621544 · Oct 28
£2,445 GBP
View
9 more retailers have this diamond
Prices start from £821 GBPSave up to £1,624 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
£821 GBP