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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 $6,005 SGD
HK$36,700 HKD
As of November 2, 2026
Save $6,577 SGD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $12,583 SGD 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 $6,005 to $12,583, a $6,577 spread on the same certified stone. Queensmith lists it at $12,583. 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: $12,583 SGD|Low: $5,989 SGD|High: $12,631 SGD|Avg: $8,263 SGD|+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 2, 2026
Retailer 7$6,005 SGD
Retailer 2$6,383 SGD
Retailer 4$6,706 SGD
Retailer 11$7,318 SGD
Retailer 6$7,377 SGD
Retailer 8$7,470 SGD
Retailer 12$7,606 SGD
Retailer 5$7,606 SGD
Retailer 3$7,971 SGD
Retailer 10$8,129 SGD
Retailer 9$8,661 SGD
Retailer 14$9,794 SGD
Retailer 13$11,743 SGD
Queensmith$12,583 SGD

23 data points across 14 retailers

21 retailers$6,005 SGD to $12,583 SGD

A
Cheapest Retailer
-
$6,005 SGD
HK$36,700 HKD
A
Retailer 2
-
$6,383 SGD
₹475,508 INR
View
B+
Retailer 3
-
$6,706 SGD
$5,246 USD
View
B+
Retailer 4
-
$6,889 SGD
View
B+
Retailer 5
-
$6,983 SGD
$5,462 USD
View
B+
Retailer 6
-
$7,318 SGD
$5,724 USD
View
Final sale: no returns
B+
Retailer 7
-
$7,377 SGD
View
B+
Retailer 8
-
$7,470 SGD
£4,601 GBP
View
B+
Retailer 9
-
$7,606 SGD
£4,685 GBP
View
B
Retailer 10
-
$7,606 SGD
$5,950 USD
View
B+
Retailer 11
-
$7,670 SGD
$6,000 USD
View
B
Retailer 12
-
$7,971 SGD
$6,235 USD
View
B+
Retailer 13
-
$8,129 SGD
$6,359 USD
View
Retailer 14
-
$8,156 SGD
A$9,815 AUD
View
Price last confirmed 29 days ago
B+
Retailer 15
-
$8,169 SGD
$6,390 USD
View
B+
Retailer 16
-
$8,334 SGD
$6,519 USD
View
B
Retailer 17
-
$8,599 SGD
A$10,348 AUD
View
B+
Retailer 18
-
$8,661 SGD
€6,452 EUR
View
B
Retailer 19
-
$9,794 SGD
ZAR 123,766 ZAR
View
B
Retailer 20
-
$11,743 SGD
£7,233 GBP
View
Most Expensive
B
Queensmith
6541643501 · Oct 28
$12,583 SGD
£7,750 GBP
View
20 more retailers have this diamond
Prices start from $6,005 SGDSave up to $6,577 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
$6,005 SGD