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Cushion|Natural|GIA

1.50ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 1553672759

Certificate GIA 1553672759

Diamond specifications and retailer prices

From $7,398 AUD
HK$40,600 HKD
As of November 1, 2026
Save $7,418 AUD (50%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $14,816 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553672759. Listed at 19 retailers as of October 28, 2026, with prices from $7,398 to $14,816, a $7,418 spread on the same certified stone. Queensmith lists it at $14,816. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1553672759
Dimensions7.87 × 5.92 × 4.06 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Knot, Needle, Extra Facet
Top View
7.87 mm5.92 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1553672759
Side View
Table 65.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 68.6%

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: $14,816 AUD|Low: $7,343 AUD|High: $14,934 AUD|Avg: $10,304 AUD|+1.7%
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
November 2, 2026
Retailer 11$7,398 AUD
Retailer 8$7,891 AUD
Retailer 12$8,251 AUD
Retailer 5$8,720 AUD
Retailer 13$9,107 AUD
Retailer 2$9,231 AUD
Retailer 7$9,463 AUD
Retailer 3$9,666 AUD
Retailer 4$10,095 AUD
Retailer 6$10,777 AUD
Retailer 10$12,123 AUD
Retailer 9$14,536 AUD
Queensmith$14,816 AUD

24 data points across 13 retailers

19 retailers$7,398 AUD to $14,816 AUD

A
Cheapest Retailer
-
$7,398 AUD
HK$40,600 HKD
A
Retailer 2
-
$7,891 AUD
₹527,890 INR
View
A
Retailer 3
-
$8,251 AUD
$5,796 USD
View
Retailer 4
-
$8,498 AUD
SGD 8,067 SGD
View
Price last confirmed 19 days ago
A
Retailer 5
-
$8,720 AUD
SGD 8,277 SGD
View
B+
Retailer 6
-
$9,065 AUD
$6,368 USD
View
B+
Retailer 7
-
$9,068 AUD
$6,370 USD
View
B+
Retailer 8
-
$9,107 AUD
$6,397 USD
View
Final sale: no returns
Retailer 9
-
$9,167 AUD
$6,439 USD
View
Price last confirmed 17 days ago
B+
Retailer 10
-
$9,231 AUD
£5,106 GBP
View
B+
Retailer 11
-
$9,463 AUD
£5,234 GBP
View
B+
Retailer 12
-
$9,666 AUD
$6,790 USD
View
Retailer 13
-
$9,738 AUD
View
Price last confirmed 29 days ago
B+
Retailer 14
-
$10,095 AUD
$7,091 USD
View
B+
Retailer 15
-
$10,371 AUD
View
B+
Retailer 16
-
$10,777 AUD
€7,210 EUR
View
B+
Retailer 17
-
$12,123 AUD
ZAR 137,573 ZAR
View
B
Retailer 18
-
$14,536 AUD
£8,040 GBP
View
Most Expensive
B
Queensmith
1553672759 · Oct 28
$14,816 AUD
£8,195 GBP
View
18 more retailers have this diamond
Prices start from $7,398 AUDSave up to $7,418 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
$7,398 AUD