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Cushion|Natural|GIA

1.50ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6551751587

Certificate GIA 6551751587

Diamond specifications and retailer prices

From HK$37,620 HKD
As of November 6, 2026
Save HK$35,895 HKD (49%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$77,836 HKD at Queensmith · As of October 22, 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 F 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 6551751587. Listed at 19 retailers as of November 6, 2026, with a 95% 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551751587
Dimensions7.45 × 5.66 × 3.94 mm
L/W Ratio1.32
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Natural
Top View
7.45 mm5.66 mm1.50 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551751587
Side View
Table 66.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 69.6%

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 6
Current: HK$77,836 HKD|Low: HK$37,314 HKD|High: HK$78,782 HKD|Avg: HK$52,321 HKD|+1.4%
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 7, 2026
Retailer 13HK$37,620 HKD
Retailer 9HK$39,751 HKD
Retailer 14HK$41,899 HKD
Retailer 12HK$44,556 HKD
Retailer 3HK$46,303 HKD
Retailer 2HK$46,985 HKD
Retailer 8HK$47,769 HKD
Retailer 4HK$49,376 HKD
Retailer 6HK$49,893 HKD
Retailer 5HK$51,398 HKD
Retailer 10HK$54,509 HKD
Retailer 11HK$61,202 HKD
Retailer 7HK$73,515 HKD
QueensmithHK$77,836 HKD

25 data points across 14 retailers

19 retailersHK$37,620 HKD to HK$73,515 HKD

A
Cheapest Retailer
-
HK$37,620 HKD
A
Retailer 2
-
HK$39,751 HKD
View
A
Retailer 3
-
HK$41,899 HKD
View
Retailer 4
-
HK$43,184 HKD
View
Price last confirmed 24 days ago
B+
Retailer 5
-
HK$44,556 HKD
View
B+
Retailer 6
-
HK$46,076 HKD
View
B+
Retailer 7
-
HK$46,084 HKD
View
B+
Retailer 8
-
HK$46,303 HKD
View
Final sale: no returns
B+
Retailer 9
-
HK$46,985 HKD
View
B+
Retailer 10
-
HK$47,769 HKD
View
B+
Retailer 11
-
HK$49,376 HKD
View
Retailer 12
-
HK$49,893 HKD
View
Price last confirmed 29 days ago
Retailer 13
-
HK$50,473 HKD
View
Price last confirmed 22 days ago
B+
Retailer 14
-
HK$51,398 HKD
View
B+
Retailer 15
-
HK$52,048 HKD
View
B+
Retailer 16
-
HK$54,509 HKD
View
B+
Retailer 17
-
HK$61,202 HKD
View
B
Retailer 18
-
HK$73,515 HKD
View
Most Expensive
Queensmith
6551751587 · Oct 22
HK$77,836 HKD
£7,820 GBP
View
Price last confirmed 16 days ago
18 more retailers have this diamond
Prices start from HK$37,620 HKDSave up to HK$35,895 HKD

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
HK$37,620 HKD