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Cushion|Natural|GIA

0.90ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 1555245420

Certificate GIA 1555245420

Diamond specifications and retailer prices

From $1,221 AUD
HK$6,700 HKD
As of October 30, 2026
Save $1,670 AUD (58%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,891 AUD at MOH London · As of October 29, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555245420. Listed at 14 retailers as of October 29, 2026, with prices from $1,221 to $2,891, a $1,670 spread on the same certified stone. MOH London lists it at $2,891. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.3°
Pavilion angle34.9°
OriginNatural
Grading LabGIA
CertificateGIA 1555245420
Dimensions5.82 × 5.55 × 3.61 mm
L/W Ratio1.05
Top View
5.82 mm5.55 mm0.90 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555245420
Side View
Table 66.0%Crown 34.3°Girdle: THN-THKPavilion 34.9°Culet: NoneDepth 65.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,891 AUD|Low: $1,221 AUD|High: $3,032 AUD|Avg: $1,832 AUD|-4.7%
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
Retailer 14
October 30, 2026
Retailer 13$1,221 AUD
Retailer 11$1,313 AUD
Retailer 2$1,456 AUD
Retailer 12$1,519 AUD
Retailer 5$1,553 AUD
Retailer 14$1,609 AUD
Retailer 3$1,723 AUD
Retailer 7$1,723 AUD
Retailer 9$1,780 AUD
Retailer 10$1,789 AUD
Retailer 8$1,965 AUD
Retailer 6$2,257 AUD
Retailer 4$2,286 AUD
MOH London$2,891 AUD

30 data points across 14 retailers

14 retailers$1,221 AUD to $2,891 AUD

A
Cheapest Retailer
-
$1,221 AUD
HK$6,700 HKD
A
Retailer 2
-
$1,313 AUD
$922 USD
View
Final sale: no returns
A
Retailer 3
-
$1,456 AUD
$1,023 USD
View
A
Retailer 4
-
$1,519 AUD
$1,067 USD
View
A
Retailer 5
-
$1,553 AUD
$1,091 USD
View
A
Retailer 6
-
$1,609 AUD
$1,130 USD
View
A
Retailer 7
-
$1,723 AUD
$1,210 USD
View
A
Retailer 8
-
$1,723 AUD
$1,210 USD
View
A
Retailer 9
-
$1,780 AUD
$1,250 USD
View
A
Retailer 10
-
$1,789 AUD
£990 GBP
View
A
Retailer 11
-
$1,965 AUD
$1,380 USD
View
Retailer 12
-
$2,257 AUD
View
Price last confirmed 29 days ago
A
Retailer 13
-
$2,286 AUD
€1,529 EUR
View
Most Expensive
B+
MOH London
59727E12C · Oct 29
$2,891 AUD
£1,599 GBP
View
13 more retailers have this diamond
Prices start from $1,221 AUDSave up to $1,670 AUD

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
$1,221 AUD