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Cushion|Natural|GIA

0.90ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6285677170

Certificate GIA 6285677170

Diamond specifications and retailer prices

From HK$4,224 HKD
As of November 6, 2026
Save HK$14,468 HKD (77%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$18,692 HKD at Adiamor · As of November 5, 2026
View at Adiamor

About this 0.9ct natural cushion diamond

This 0.9ct natural cushion sits in the just-under-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 6285677170. Listed at 16 retailers as of November 5, 2026, with prices from HK$4,224 to HK$18,692, a HK$14,468 spread on the same certified stone. Adiamor lists it at HK$18,692. 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

0.90
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6285677170
Dimensions5.26 × 5.21 × 3.84 mm
L/W Ratio1.01
Top View
5.26 mm5.21 mm0.90 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6285677170
Side View
Table 54.0%CrownGirdle: THK-THKPavilionCulet: NoneDepth 73.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$7,375 HKD|Low: HK$4,224 HKD|High: HK$12,132 HKD|Avg: HK$7,850 HKD|+2.5%
Retailer 1
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 7, 2026
Retailer 8HK$4,224 HKD
Retailer 2HK$4,514 HKD
Retailer 7HK$6,152 HKD
Retailer 4HK$6,199 HKD
Retailer 11HK$6,223 HKD
Retailer 14HK$6,286 HKD
Retailer 6HK$6,724 HKD
Retailer 15HK$6,960 HKD
Retailer 5HK$7,007 HKD
Retailer 1HK$7,375 HKD
Retailer 3HK$7,524 HKD
Retailer 10HK$8,707 HKD
Retailer 12HK$9,076 HKD
Retailer 13HK$11,333 HKD
Retailer 9HK$11,858 HKD

26 data points across 15 retailers

16 retailersHK$4,224 HKD to HK$18,692 HKD

A
Cheapest Retailer
-
HK$4,224 HKD
A
Retailer 2
-
HK$4,514 HKD
View
B+
Retailer 3
-
HK$6,152 HKD
View
Retailer 4
-
HK$6,199 HKD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
HK$6,223 HKD
View
B+
Retailer 6
-
HK$6,286 HKD
View
B+
Retailer 7
-
HK$6,724 HKD
View
B+
Retailer 8
-
HK$6,960 HKD
View
B+
Retailer 9
-
HK$7,007 HKD
View
B+
Retailer 10
-
HK$7,375 HKD
View
B+
Retailer 11
-
HK$7,524 HKD
View
B+
Retailer 12
-
HK$8,707 HKD
View
B+
Retailer 13
-
HK$9,076 HKD
View
B
Retailer 14
-
HK$11,333 HKD
View
B
Retailer 15
-
HK$11,858 HKD
View
Most Expensive
B
Adiamor
D-51268865 · Nov 5
HK$18,692 HKD
$2,385 USD
View
15 more retailers have this diamond
Prices start from HK$4,224 HKDSave up to HK$14,468 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
0.90ct Cushion
HK$4,224 HKD