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Cushion|Natural|GIA

1.55ct I SI1 Cushion Natural Diamond

GD • I/SI1 • GIA 5513661456

Certificate GIA 5513661456

Diamond specifications and retailer prices

From $6,370 AUD
$4,464 USD
As of November 2, 2026
Save $5,685 AUD (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $12,055 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 1.55ct natural cushion diamond

This 1.55ct natural cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5513661456. Listed at 13 retailers as of October 29, 2026, with prices from $6,370 to $12,055, a $5,685 spread on the same certified stone. MOH London lists it at $12,055. 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

1.55
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5513661456
Dimensions7.02 × 6.64 × 4.56 mm
L/W Ratio1.06
Girdle conditionFaceted
Culet sizeNone
Cert comments
Clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Needle, Feather
Top View
7.02 mm6.64 mm1.55 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5513661456
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.6%

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: $12,055 AUD|Low: $6,370 AUD|High: $14,015 AUD|Avg: $8,167 AUD|-14.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 12$6,370 AUD
Retailer 11$6,565 AUD
Retailer 3$6,949 AUD
Retailer 9$7,063 AUD
Retailer 2$7,111 AUD
Retailer 5$7,143 AUD
Retailer 7$7,514 AUD
Retailer 10$7,528 AUD
Retailer 6$8,518 AUD
Retailer 4$9,170 AUD
Retailer 8$9,254 AUD
MOH London$12,055 AUD

25 data points across 12 retailers

13 retailers$6,370 AUD to $12,055 AUD

A
Cheapest Retailer
-
$6,370 AUD
$4,464 USD
B+
Retailer 2
-
$6,565 AUD
$4,601 USD
View
B+
Retailer 3
-
$6,949 AUD
$4,870 USD
View
Final sale: no returns
B+
Retailer 4
-
$7,063 AUD
$4,950 USD
View
B+
Retailer 5
-
$7,111 AUD
₹474,653 INR
View
B+
Retailer 6
-
$7,143 AUD
£3,942 GBP
View
B+
Retailer 7
-
$7,514 AUD
£4,147 GBP
View
Retailer 8
-
$7,528 AUD
$5,276 USD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$8,518 AUD
€5,685 EUR
View
Retailer 10
-
$8,537 AUD
$5,983 USD
View
Price last confirmed 90 days ago
Retailer 11
-
$9,170 AUD
View
Price last confirmed 21 days ago
B
Retailer 12
-
$9,254 AUD
ZAR 104,770 ZAR
View
Most Expensive
B
MOH London
83D43D9F6 · Oct 29
$12,055 AUD
£6,652 GBP
View
12 more retailers have this diamond
Prices start from $6,370 AUDSave up to $5,685 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
1.55ct Cushion
$6,370 AUD