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Cushion|Natural|GIA

1.50ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6541781711

Certificate GIA 6541781711

Diamond specifications and retailer prices

From $4,767 AUD
HK$26,100 HKD
As of November 2, 2026
Save $5,135 AUD (52%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $10,284 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 6541781711. Listed at 22 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
Pavilion angle37.7°
OriginNatural
Grading LabGIA
CertificateGIA 6541781711
Dimensions7.14 × 6.19 × 4.29 mm
L/W Ratio1.15
Top View
7.14 mm6.19 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541781711
Side View
Table 66.0%CrownGirdle: STK-THKPavilion 37.7°Culet: NoneDepth 69.3%

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: $5,317 AUD|Low: $4,749 AUD|High: $10,548 AUD|Avg: $6,406 AUD|+6.3%
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 11$4,767 AUD
Retailer 9$5,123 AUD
Retailer 1$5,317 AUD
Retailer 3$5,455 AUD
Retailer 7$5,534 AUD
Retailer 8$5,544 AUD
Retailer 17$5,736 AUD
Retailer 15$5,822 AUD
Retailer 12$5,986 AUD
Retailer 10$6,007 AUD
Retailer 2$6,100 AUD
Retailer 5$6,180 AUD
Retailer 14$6,354 AUD
Retailer 6$6,431 AUD
Retailer 16$6,454 AUD
Retailer 13$7,139 AUD
Retailer 4$7,922 AUD
Retailer 18$9,902 AUD
Wholesale Diamonds Direct$10,284 AUD

19 data points across 19 retailers

22 retailers$4,767 AUD to $9,902 AUD

A
Cheapest Retailer
-
$4,767 AUD
HK$26,100 HKD
Retailer 2
-
$5,123 AUD
$3,590 USD
View
Price last confirmed 14 days ago
A
Retailer 3
-
$5,317 AUD
$3,726 USD
View
A
Retailer 4
-
$5,455 AUD
€3,641 EUR
View
A
Retailer 5
-
$5,534 AUD
$3,878 USD
View
A
Retailer 6
-
$5,544 AUD
$3,885 USD
View
A
Retailer 7
-
$5,736 AUD
$4,020 USD
View
A
Retailer 8
-
$5,822 AUD
$4,080 USD
View
Final sale: no returns
A
Retailer 9
-
$5,874 AUD
View
A
Retailer 10
-
$5,986 AUD
£3,303 GBP
View
A
Retailer 11
-
$6,007 AUD
$4,210 USD
View
A
Retailer 12
-
$6,100 AUD
$4,275 USD
View
A
Retailer 13
-
$6,180 AUD
$4,331 USD
View
B+
Retailer 14
-
$6,354 AUD
$4,453 USD
View
B+
Retailer 15
-
$6,431 AUD
$4,507 USD
View
A
Retailer 16
-
$6,454 AUD
£3,562 GBP
View
Retailer 17
-
$6,729 AUD
View
Price last confirmed 23 days ago
B+
Retailer 18
-
$6,843 AUD
View
B+
Retailer 19
-
$7,139 AUD
€4,765 EUR
View
B+
Retailer 20
-
$7,922 AUD
ZAR 89,688 ZAR
View
B
Retailer 21
-
$9,902 AUD
£5,464 GBP
View
Most Expensive
Wholesale Diamonds Direct
425984398 · Oct 23
$10,284 AUD
$7,207 USD
View
Price last confirmed 9 days ago
21 more retailers have this diamond
Prices start from $4,767 AUDSave up to $5,135 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
$4,767 AUD