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Cushion|Natural|GIA

1.50ct H SI2 Cushion Natural Diamond

EX • H/SI2 • GIA 6402489726

Certificate GIA 6402489726

Diamond specifications and retailer prices

From $9,309 AUD
As of November 6, 2026
Save $8,119 AUD (47%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $17,428 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6402489726. Listed at 18 retailers as of November 4, 2026, with prices from $9,309 to $17,428, a $8,119 spread on the same certified stone. MOH London lists it at $17,428. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6402489726
Dimensions7.33 × 6.15 × 4.27 mm
L/W Ratio1.19
Top View
7.33 mm6.15 mm1.50 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6402489726
Side View
Table 75.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 69.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $17,428 AUD|Low: $9,309 AUD|High: $17,687 AUD|Avg: $11,820 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9$9,309 AUD
Retailer 6$9,351 AUD
Retailer 3$9,820 AUD
Retailer 7$10,486 AUD
Retailer 10$10,670 AUD
Retailer 2$10,773 AUD
Retailer 5$11,568 AUD
Retailer 8$11,732 AUD
Retailer 4$12,946 AUD
MOH London$17,428 AUD

43 data points across 10 retailers

18 retailers$9,309 AUD to $17,428 AUD

B+
Cheapest Retailer
-
$9,309 AUD
B+
Retailer 2
-
$9,351 AUD
View
B
Retailer 3
-
$9,732 AUD
View
B
Retailer 4
-
$9,820 AUD
View
B
Retailer 5
-
$10,068 AUD
View
B
Retailer 6
-
$10,358 AUD
View
Retailer 7
-
$10,486 AUD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$10,670 AUD
View
B
Retailer 9
-
$10,773 AUD
View
B
Retailer 10
-
$11,568 AUD
View
B
Retailer 11
-
$11,732 AUD
View
B
Retailer 12
-
$12,016 AUD
View
B
Retailer 13
-
$12,516 AUD
View
B
Retailer 14
-
$12,516 AUD
View
B
Retailer 15
-
$12,924 AUD
View
B
Retailer 16
-
$12,946 AUD
View
Retailer 17
-
$13,810 AUD
View
Price last confirmed 15 days ago
Most Expensive
B
MOH London
D1DD819D8 · Nov 4
$17,428 AUD
£9,429 GBP
View
17 more retailers have this diamond
Prices start from $9,309 AUDSave up to $8,119 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.

B+
1.50ct Cushion
$9,309 AUD