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Cushion|Natural|GIA

1.55ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 5242011749

Certificate GIA 5242011749

Diamond specifications and retailer prices

From $4,282 AUD
HK$23,500 HKD
As of November 1, 2026
Save $5,409 AUD (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $9,691 AUD at MOH London · As of November 1, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5242011749. Listed at 17 retailers as of November 1, 2026, with prices from $4,282 to $9,691, a $5,409 spread on the same certified stone. MOH London lists it at $9,691. 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

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

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5242011749
Dimensions8.26 × 6.15 × 4.03 mm
L/W Ratio1.34
Girdle conditionFaceted
Top View
8.26 mm6.15 mm1.55 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 5242011749
Side View
Table 64.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.5%

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: Nov 1
Current: $9,691 AUD|Low: $4,282 AUD|High: $10,126 AUD|Avg: $5,925 AUD|-4.3%
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
Retailer 15
Retailer 16
November 2, 2026
Retailer 14$4,282 AUD
Retailer 3$4,460 AUD
Retailer 12$4,594 AUD
Retailer 5$4,735 AUD
Retailer 10$4,923 AUD
Retailer 15$4,936 AUD
Retailer 7$5,146 AUD
Retailer 9$5,232 AUD
Retailer 13$5,239 AUD
Retailer 11$5,530 AUD
Retailer 4$6,099 AUD
Retailer 8$6,432 AUD
Retailer 2$6,662 AUD
Retailer 16$7,297 AUD
Retailer 6$9,175 AUD
MOH London$9,691 AUD

26 data points across 16 retailers

17 retailers$4,282 AUD to $9,691 AUD

A
Cheapest Retailer
-
$4,282 AUD
HK$23,500 HKD
A
Retailer 2
-
$4,460 AUD
$3,133 USD
View
A
Retailer 3
-
$4,594 AUD
$3,227 USD
View
A
Retailer 4
-
$4,735 AUD
$3,326 USD
View
A
Retailer 5
-
$4,923 AUD
$3,458 USD
View
Final sale: no returns
A
Retailer 6
-
$4,936 AUD
€3,302 EUR
View
A
Retailer 7
-
$5,146 AUD
$3,615 USD
View
A
Retailer 8
-
$5,232 AUD
$3,675 USD
View
A
Retailer 9
-
$5,239 AUD
$3,680 USD
View
A
Retailer 10
-
$5,530 AUD
£3,059 GBP
View
A
Retailer 11
-
$5,800 AUD
View
A
Retailer 12
-
$6,099 AUD
$4,284 USD
View
Retailer 13
-
$6,432 AUD
View
Price last confirmed 23 days ago
A
Retailer 14
-
$6,662 AUD
€4,457 EUR
View
B+
Retailer 15
-
$7,297 AUD
ZAR 82,812 ZAR
View
Retailer 16
-
$9,175 AUD
$6,445 USD
View
Price last confirmed 9 days ago
Most Expensive
B+
MOH London
EDA8DE476 · Nov 1
$9,691 AUD
£5,360 GBP
View
16 more retailers have this diamond
Prices start from $4,282 AUDSave up to $5,409 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
$4,282 AUD