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Cushion|Natural|GIA

1.50ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 6541643501

Certificate GIA 6541643501

Diamond specifications and retailer prices

From $6,703 AUD
HK$36,700 HKD
As of November 2, 2026
Save $7,341 AUD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $14,044 AUD at Queensmith · As of October 28, 2026
View at Queensmith

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 6541643501. Listed at 21 retailers as of October 28, 2026, with prices from $6,703 to $14,044, a $7,341 spread on the same certified stone. Queensmith lists it at $14,044. 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 6541643501
Dimensions7.86 × 5.86 × 3.95 mm
L/W Ratio1.34
Top View
7.86 mm5.86 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541643501
Side View
Table 67.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.3%

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: $14,044 AUD|Low: $6,685 AUD|High: $14,099 AUD|Avg: $9,231 AUD|+2.2%
Queensmith
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
November 3, 2026
Retailer 8$6,703 AUD
Retailer 7$7,124 AUD
Retailer 4$7,486 AUD
Retailer 12$8,168 AUD
Retailer 6$8,234 AUD
Retailer 9$8,338 AUD
Retailer 2$8,490 AUD
Retailer 5$8,490 AUD
Retailer 3$8,897 AUD
Retailer 11$9,073 AUD
Retailer 10$9,667 AUD
Retailer 14$10,932 AUD
Retailer 13$13,107 AUD
Queensmith$14,044 AUD

24 data points across 14 retailers

21 retailers$6,703 AUD to $14,044 AUD

A
Cheapest Retailer
-
$6,703 AUD
HK$36,700 HKD
A
Retailer 2
-
$7,124 AUD
₹475,508 INR
View
B+
Retailer 3
-
$7,486 AUD
$5,246 USD
View
B+
Retailer 4
-
$7,689 AUD
SGD 7,282 SGD
View
B+
Retailer 5
-
$7,794 AUD
$5,462 USD
View
B+
Retailer 6
-
$8,168 AUD
$5,724 USD
View
Final sale: no returns
B+
Retailer 7
-
$8,234 AUD
SGD 7,798 SGD
View
B+
Retailer 8
-
$8,338 AUD
£4,601 GBP
View
B+
Retailer 9
-
$8,490 AUD
£4,685 GBP
View
B
Retailer 10
-
$8,490 AUD
$5,950 USD
View
B+
Retailer 11
-
$8,561 AUD
$6,000 USD
View
B
Retailer 12
-
$8,897 AUD
$6,235 USD
View
B+
Retailer 13
-
$9,073 AUD
$6,359 USD
View
Retailer 14
-
$9,103 AUD
View
Price last confirmed 30 days ago
B+
Retailer 15
-
$9,117 AUD
$6,390 USD
View
B+
Retailer 16
-
$9,302 AUD
$6,519 USD
View
B
Retailer 17
-
$9,598 AUD
View
B+
Retailer 18
-
$9,667 AUD
€6,452 EUR
View
B
Retailer 19
-
$10,932 AUD
ZAR 123,766 ZAR
View
B
Retailer 20
-
$13,107 AUD
£7,233 GBP
View
Most Expensive
B
Queensmith
6541643501 · Oct 28
$14,044 AUD
£7,750 GBP
View
20 more retailers have this diamond
Prices start from $6,703 AUDSave up to $7,341 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
$6,703 AUD