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Cushion|Natural|GIA

1.50ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 1553446315

Certificate GIA 1553446315

Diamond specifications and retailer prices

From $4,497 AUD
As of November 6, 2026
Save $5,467 AUD (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $9,964 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.5ct natural cushion diamond

This 1.5ct natural cushion sits in the one-and-a-half to two carat band, graded H 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 1553446315. Listed at 17 retailers as of November 4, 2026, with prices from $4,497 to $9,964, a $5,467 spread on the same certified stone. MOH London lists it at $9,964. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553446315
Dimensions7.32 × 5.86 × 3.97 mm
L/W Ratio1.25
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
7.32 mm5.86 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553446315
Side View
Table 62.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 67.8%

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 6
Current: $9,964 AUD|Low: $4,497 AUD|High: $10,458 AUD|Avg: $6,472 AUD|-4.5%
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
November 6, 2026
Retailer 2$4,497 AUD
Retailer 6$4,749 AUD
Retailer 12$5,101 AUD
Retailer 15$5,101 AUD
Retailer 3$5,255 AUD
Retailer 8$5,597 AUD
Retailer 13$5,691 AUD
Retailer 10$6,015 AUD
Retailer 4$6,188 AUD
Retailer 14$6,332 AUD
Retailer 9$6,568 AUD
Retailer 5$6,578 AUD
Retailer 7$6,590 AUD
Retailer 11$7,292 AUD
MOH London$9,964 AUD

33 data points across 15 retailers

17 retailers$4,497 AUD to $9,964 AUD

A
Cheapest Retailer
-
$4,497 AUD
A
Retailer 2
-
$4,749 AUD
View
Final sale: no returns
A
Retailer 3
-
$5,101 AUD
View
A
Retailer 4
-
$5,101 AUD
View
A
Retailer 5
-
$5,255 AUD
View
A
Retailer 6
-
$5,597 AUD
View
A
Retailer 7
-
$5,691 AUD
View
A
Retailer 8
-
$5,744 AUD
View
A
Retailer 9
-
$6,015 AUD
View
Retailer 10
-
$6,178 AUD
View
Price last confirmed 22 days ago
A
Retailer 11
-
$6,188 AUD
View
A
Retailer 12
-
$6,332 AUD
View
A
Retailer 13
-
$6,568 AUD
View
B+
Retailer 14
-
$6,578 AUD
View
Retailer 15
-
$6,590 AUD
View
Price last confirmed 29 days ago
B+
Retailer 16
-
$7,292 AUD
View
Most Expensive
B+
MOH London
490120D5A · Nov 4
$9,964 AUD
£5,391 GBP
View
16 more retailers have this diamond
Prices start from $4,497 AUDSave up to $5,467 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
$4,497 AUD