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Cushion|Natural|GIA

1.20ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 1545912378

Certificate GIA 1545912378

Diamond specifications and retailer prices

From HK$23,371 HKD
As of November 6, 2026
Save HK$27,917 HKD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$52,355 HKD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-carat band, graded D 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 1545912378. Listed at 19 retailers as of November 2, 2026, with a 119% 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

1.20
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1545912378
Dimensions7.28 × 5.45 × 3.69 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Needle, Pinpoint
Top View
7.28 mm5.45 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1545912378
Side View
Table 66.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.8%

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$52,355 HKD|Low: HK$23,167 HKD|High: HK$53,450 HKD|Avg: HK$33,821 HKD|-2.0%
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
November 6, 2026
Retailer 15HK$23,371 HKD
Retailer 2HK$24,296 HKD
Retailer 6HK$27,846 HKD
Retailer 5HK$28,309 HKD
Retailer 13HK$28,395 HKD
Retailer 4HK$29,273 HKD
Retailer 10HK$29,476 HKD
Retailer 8HK$29,751 HKD
Retailer 11HK$30,879 HKD
Retailer 3HK$31,812 HKD
Retailer 7HK$32,737 HKD
Retailer 9HK$34,508 HKD
Retailer 12HK$37,431 HKD
Retailer 14HK$51,288 HKD
QueensmithHK$52,355 HKD

23 data points across 15 retailers

19 retailersHK$23,371 HKD to HK$51,288 HKD

A
Cheapest Retailer
-
HK$23,371 HKD
B+
Retailer 2
-
HK$24,296 HKD
View
B+
Retailer 3
-
HK$27,846 HKD
View
B+
Retailer 4
-
HK$28,309 HKD
View
Final sale: no returns
B+
Retailer 5
-
HK$28,395 HKD
View
B+
Retailer 6
-
HK$29,273 HKD
View
B+
Retailer 7
-
HK$29,476 HKD
View
B+
Retailer 8
-
HK$29,625 HKD
View
B+
Retailer 9
-
HK$29,751 HKD
View
B+
Retailer 10
-
HK$30,879 HKD
View
B+
Retailer 11
-
HK$31,624 HKD
View
Retailer 12
-
HK$31,765 HKD
View
Price last confirmed 22 days ago
B+
Retailer 13
-
HK$31,812 HKD
View
B+
Retailer 14
-
HK$32,737 HKD
View
B+
Retailer 15
-
HK$34,508 HKD
View
Retailer 16
-
HK$34,579 HKD
View
Price last confirmed 34 days ago
B
Retailer 17
-
HK$37,431 HKD
View
B
Retailer 18
-
HK$51,288 HKD
View
Most Expensive
Queensmith
1545912378 · Oct 28
HK$52,355 HKD
£5,260 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from HK$23,371 HKDSave up to HK$27,917 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
1.20ct Cushion
HK$23,371 HKD