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Cushion|Natural|GIA

1.20ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6422491450

Certificate GIA 6422491450

Diamond specifications and retailer prices

From HK$15,299 HKD
As of November 6, 2026
Save HK$10,330 HKD (40%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$25,628 HKD at Frank Darling · As of November 6, 2026
View at Frank Darling

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6422491450. Listed at 6 retailers as of November 6, 2026, with prices from HK$15,299 to HK$25,628, a HK$10,330 spread on the same certified stone. Frank Darling lists it at HK$25,628. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6422491450
Dimensions5.98 × 5.88 × 4.16 mm
L/W Ratio1.02
Top View
5.98 mm5.88 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 6422491450
Side View
Table 66.0%CrownGirdle: STH-ETHPavilionCulet: NoneDepth 70.7%

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$25,628 HKD|Low: HK$15,299 HKD|High: HK$25,628 HKD|Avg: HK$18,882 HKD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4HK$15,299 HKD
Retailer 5HK$15,463 HKD
Retailer 6HK$15,518 HKD
Retailer 3HK$16,200 HKD
Retailer 2HK$22,713 HKD
Frank DarlingHK$25,628 HKD

32 data points across 6 retailers

6 retailersHK$15,299 HKD to HK$25,628 HKD

B+
Cheapest Retailer
-
HK$15,299 HKD
B+
Retailer 2
-
HK$15,463 HKD
View
B+
Retailer 3
-
HK$15,518 HKD
View
B+
Retailer 4
-
HK$16,200 HKD
View
B
Retailer 5
-
HK$22,713 HKD
View
Most Expensive
B
Frank Darling
CU2547MR · Nov 6
HK$25,628 HKD
$3,270 USD
View
5 more retailers have this diamond
Prices start from HK$15,299 HKDSave up to HK$10,330 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+
1.20ct Cushion
HK$15,299 HKD