CaratHunter
Plans
Cushion|Natural|GIA

1.50ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6551160529

Certificate GIA 6551160529

Diamond specifications and retailer prices

From HK$46,241 HKD
As of November 6, 2026
Save HK$38,333 HKD (45%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$87,591 HKD 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 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 6551160529. Listed at 20 retailers as of November 6, 2026, with a 83% 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
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551160529
Dimensions7.96 × 5.95 × 3.91 mm
L/W Ratio1.34
Top View
7.96 mm5.95 mm1.50 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551160529
Side View
Table 67.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 65.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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$87,591 HKD|Low: HK$45,841 HKD|High: HK$88,487 HKD|Avg: HK$62,711 HKD|-1.0%
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
Retailer 15
Retailer 16
November 7, 2026
Retailer 5HK$46,241 HKD
Retailer 12HK$48,576 HKD
Retailer 8HK$50,018 HKD
Retailer 7HK$53,294 HKD
Retailer 15HK$55,003 HKD
Retailer 4HK$56,320 HKD
Retailer 11HK$56,351 HKD
Retailer 6HK$56,900 HKD
Retailer 10HK$57,103 HKD
Retailer 2HK$57,142 HKD
Retailer 16HK$62,299 HKD
Retailer 3HK$63,185 HKD
Retailer 13HK$66,281 HKD
Retailer 14HK$74,440 HKD
Retailer 9HK$84,573 HKD
QueensmithHK$87,591 HKD

22 data points across 16 retailers

20 retailersHK$46,241 HKD to HK$84,573 HKD

B+
Cheapest Retailer
-
HK$46,241 HKD
B+
Retailer 2
-
HK$48,576 HKD
View
B+
Retailer 3
-
HK$50,018 HKD
View
B+
Retailer 4
-
HK$53,294 HKD
View
Retailer 5
-
HK$53,310 HKD
View
Price last confirmed 26 days ago
B+
Retailer 6
-
HK$55,003 HKD
View
B+
Retailer 7
-
HK$56,320 HKD
View
Final sale: no returns
B+
Retailer 8
-
HK$56,351 HKD
View
B+
Retailer 9
-
HK$56,374 HKD
View
Retailer 10
-
HK$56,900 HKD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
HK$57,103 HKD
View
B+
Retailer 12
-
HK$57,142 HKD
View
Retailer 13
-
HK$60,654 HKD
View
Price last confirmed 34 days ago
B+
Retailer 14
-
HK$62,299 HKD
View
B+
Retailer 15
-
HK$62,394 HKD
View
B+
Retailer 16
-
HK$63,185 HKD
View
B+
Retailer 17
-
HK$66,281 HKD
View
B
Retailer 18
-
HK$74,440 HKD
View
B
Retailer 19
-
HK$84,573 HKD
View
Most Expensive
Queensmith
6551160529 · Oct 28
HK$87,591 HKD
£8,800 GBP
View
Price last confirmed 9 days ago
19 more retailers have this diamond
Prices start from HK$46,241 HKDSave up to HK$38,333 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.

B+
1.50ct Cushion
HK$46,241 HKD