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Cushion|Natural|GIA

1.50ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 1553442255

Certificate GIA 1553442255

Diamond specifications and retailer prices

From $5,205 AUD
HK$28,500 HKD
As of November 2, 2026
Save $5,642 AUD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $11,009 AUD at Wholesale Diamonds Direct · As of October 23, 2026
View at Wholesale Diamonds Direct

About this 1.5ct natural cushion diamond

This 1.5ct 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 1553442255. Listed at 21 retailers as of November 1, 2026, with a 108% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553442255
Dimensions7.50 × 5.99 × 4.12 mm
L/W Ratio1.25
Girdle conditionFaceted
Top View
7.50 mm5.99 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553442255
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.8%

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: $6,293 AUD|Low: $5,132 AUD|High: $11,643 AUD|Avg: $7,042 AUD|-1.6%
Retailer 1
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
Retailer 17
Retailer 18
Wholesale Diamonds Direct
November 2, 2026
Retailer 12$5,205 AUD
Retailer 3$5,215 AUD
Retailer 18$5,481 AUD
Retailer 16$5,772 AUD
Retailer 5$5,838 AUD
Retailer 9$5,906 AUD
Retailer 7$5,934 AUD
Retailer 10$6,043 AUD
Retailer 2$6,093 AUD
Retailer 15$6,235 AUD
Retailer 1$6,293 AUD
Retailer 13$6,550 AUD
Retailer 11$6,619 AUD
Retailer 17$6,864 AUD
Retailer 8$6,895 AUD
Retailer 14$7,809 AUD
Retailer 6$8,654 AUD
Retailer 4$10,848 AUD
Wholesale Diamonds Direct$11,009 AUD

19 data points across 19 retailers

21 retailers$5,205 AUD to $10,848 AUD

A
Cheapest Retailer
-
$5,205 AUD
HK$28,500 HKD
A
Retailer 2
-
$5,215 AUD
$3,655 USD
View
A
Retailer 3
-
$5,481 AUD
$3,841 USD
View
A
Retailer 4
-
$5,772 AUD
$4,045 USD
View
Final sale: no returns
A
Retailer 5
-
$5,838 AUD
€3,897 EUR
View
A
Retailer 6
-
$5,906 AUD
$4,139 USD
View
A
Retailer 7
-
$5,934 AUD
$4,159 USD
View
A
Retailer 8
-
$6,043 AUD
$4,235 USD
View
A
Retailer 9
-
$6,093 AUD
View
A
Retailer 10
-
$6,235 AUD
$4,370 USD
View
A
Retailer 11
-
$6,293 AUD
$4,410 USD
View
A
Retailer 12
-
$6,550 AUD
£3,614 GBP
View
B+
Retailer 13
-
$6,619 AUD
$4,639 USD
View
B+
Retailer 14
-
$6,864 AUD
£3,788 GBP
View
Retailer 15
-
$6,895 AUD
$4,832 USD
View
Price last confirmed 13 days ago
B+
Retailer 16
-
$7,205 AUD
View
Retailer 17
-
$7,328 AUD
View
Price last confirmed 23 days ago
B+
Retailer 18
-
$7,809 AUD
€5,212 EUR
View
B+
Retailer 19
-
$8,654 AUD
ZAR 97,981 ZAR
View
B
Retailer 20
-
$10,848 AUD
£5,986 GBP
View
Most Expensive
Wholesale Diamonds Direct
253138994 · Oct 23
$11,009 AUD
$7,715 USD
View
Price last confirmed 9 days ago
20 more retailers have this diamond
Prices start from $5,205 AUDSave up to $5,642 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
1.50ct Cushion
$5,205 AUD