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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 $4,273 SGD
HK$26,100 HKD
As of November 2, 2026
Save $4,602 SGD (52%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $9,217 SGD 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: $4,765 SGD|Low: $4,256 SGD|High: $9,454 SGD|Avg: $5,742 SGD|+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$4,273 SGD
Retailer 9$4,591 SGD
Retailer 1$4,765 SGD
Retailer 3$4,889 SGD
Retailer 7$4,960 SGD
Retailer 8$4,969 SGD
Retailer 17$5,141 SGD
Retailer 15$5,218 SGD
Retailer 12$5,365 SGD
Retailer 10$5,384 SGD
Retailer 2$5,467 SGD
Retailer 5$5,539 SGD
Retailer 14$5,695 SGD
Retailer 6$5,764 SGD
Retailer 16$5,785 SGD
Retailer 13$6,399 SGD
Retailer 4$7,100 SGD
Retailer 18$8,875 SGD
Wholesale Diamonds Direct$9,217 SGD

19 data points across 19 retailers

22 retailers$4,273 SGD to $8,875 SGD

A
Cheapest Retailer
-
$4,273 SGD
HK$26,100 HKD
Retailer 2
-
$4,591 SGD
$3,590 USD
View
Price last confirmed 14 days ago
A
Retailer 3
-
$4,765 SGD
$3,726 USD
View
A
Retailer 4
-
$4,889 SGD
€3,641 EUR
View
A
Retailer 5
-
$4,960 SGD
$3,878 USD
View
A
Retailer 6
-
$4,969 SGD
$3,885 USD
View
A
Retailer 7
-
$5,141 SGD
$4,020 USD
View
A
Retailer 8
-
$5,218 SGD
$4,080 USD
View
Final sale: no returns
A
Retailer 9
-
$5,265 SGD
A$6,333 AUD
View
A
Retailer 10
-
$5,365 SGD
£3,303 GBP
View
A
Retailer 11
-
$5,384 SGD
$4,210 USD
View
A
Retailer 12
-
$5,467 SGD
$4,275 USD
View
A
Retailer 13
-
$5,539 SGD
$4,331 USD
View
B+
Retailer 14
-
$5,695 SGD
$4,453 USD
View
B+
Retailer 15
-
$5,764 SGD
$4,507 USD
View
A
Retailer 16
-
$5,785 SGD
£3,562 GBP
View
Retailer 17
-
$6,031 SGD
A$7,255 AUD
View
Price last confirmed 23 days ago
B+
Retailer 18
-
$6,133 SGD
A$7,378 AUD
View
B+
Retailer 19
-
$6,399 SGD
€4,765 EUR
View
B+
Retailer 20
-
$7,100 SGD
ZAR 89,688 ZAR
View
B
Retailer 21
-
$8,875 SGD
£5,464 GBP
View
Most Expensive
Wholesale Diamonds Direct
425984398 · Oct 23
$9,217 SGD
$7,207 USD
View
Price last confirmed 9 days ago
21 more retailers have this diamond
Prices start from $4,273 SGDSave up to $4,602 SGD

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
$4,273 SGD