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Cushion|Natural|GIA

0.90ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6555162739

Certificate GIA 6555162739

Diamond specifications and retailer prices

From £640 GBP
HK$6,700 HKD
As of November 1, 2026
Save £902 GBP (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,542 GBP at MOH London · As of November 1, 2026
View at MOH London

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555162739. Listed at 15 retailers as of November 1, 2026, with prices from £640 to £1,542, a £902 spread on the same certified stone. MOH London lists it at £1,542. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555162739
Dimensions5.71 × 5.46 × 3.65 mm
L/W Ratio1.05
Top View
5.71 mm5.46 mm0.90 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555162739
Side View
Table 66.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.9%

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 1
Current: £1,542 GBP|Low: £640 GBP|High: £1,608 GBP|Avg: £1,026 GBP|-4.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 8£640 GBP
Retailer 11£776 GBP
Retailer 10£820 GBP
Retailer 7£867 GBP
Retailer 13£881 GBP
Retailer 5£904 GBP
Retailer 6£960 GBP
Retailer 9£1,001 GBP
Retailer 4£1,014 GBP
Retailer 2£1,179 GBP
Retailer 12£1,252 GBP
Retailer 3£1,348 GBP
MOH London£1,542 GBP

26 data points across 13 retailers

15 retailers£640 GBP to £1,542 GBP

A
Cheapest Retailer
-
£640 GBP
HK$6,700 HKD
B+
Retailer 2
-
£776 GBP
$1,040 USD
View
Final sale: no returns
A
Retailer 3
-
£820 GBP
€1,047 EUR
View
A
Retailer 4
-
£867 GBP
$1,162 USD
View
A
Retailer 5
-
£881 GBP
$1,180 USD
View
Retailer 6
-
£904 GBP
SGD 1,637 SGD
View
Price last confirmed 10 days ago
A
Retailer 7
-
£960 GBP
View
A
Retailer 8
-
£1,001 GBP
$1,341 USD
View
A
Retailer 9
-
£1,014 GBP
$1,359 USD
View
Retailer 10
-
£1,134 GBP
A$2,339 AUD
View
Price last confirmed 29 days ago
B+
Retailer 11
-
£1,144 GBP
A$2,358 AUD
View
B+
Retailer 12
-
£1,179 GBP
€1,504 EUR
View
B+
Retailer 13
-
£1,252 GBP
ZAR 27,105 ZAR
View
Retailer 14
-
£1,348 GBP
$1,807 USD
View
Price last confirmed 9 days ago
Most Expensive
B+
MOH London
157E34199 · Nov 1
£1,542 GBP
View
14 more retailers have this diamond
Prices start from £640 GBPSave up to £902 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
£640 GBP