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Cushion|Natural|GIA

0.90ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 1543517429

Certificate GIA 1543517429

Diamond specifications and retailer prices

From HK$5,624 HKD
As of October 31, 2026
Save HK$7,977 HKD (59%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$13,600 HKD at Moon Ocean · As of October 30, 2026
View at Moon Ocean

About this 0.9ct natural cushion diamond

This 0.9ct natural cushion sits in the just-under-one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1543517429. Listed at 18 retailers as of October 30, 2026, with prices from HK$5,624 to HK$13,600, a HK$7,977 spread on the same certified stone. Moon Ocean lists it at HK$13,600. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Pavilion angle39.9°
OriginNatural
Grading LabGIA
CertificateGIA 1543517429
Dimensions5.80 × 5.57 × 3.69 mm
L/W Ratio1.04
Girdle conditionFaceted
Top View
5.80 mm5.57 mm0.90 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1543517429
Side View
Table 66.0%CrownGirdle: MED-VTKPavilion 39.9°Culet: NoneDepth 66.2%

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: Oct 31
Current: HK$13,600 HKD|Low: HK$5,523 HKD|High: HK$13,971 HKD|Avg: HK$9,002 HKD|-2.5%
Moon Ocean
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 1, 2026
Retailer 11HK$5,624 HKD
Retailer 10HK$6,394 HKD
Retailer 9HK$7,453 HKD
Retailer 16HK$7,704 HKD
Retailer 6HK$7,786 HKD
Retailer 2HK$8,098 HKD
Retailer 14HK$8,277 HKD
Retailer 8HK$8,488 HKD
Retailer 15HK$8,599 HKD
Retailer 7HK$9,108 HKD
Retailer 5HK$9,164 HKD
Retailer 12HK$9,927 HKD
Retailer 13HK$10,321 HKD
Retailer 4HK$11,620 HKD
Retailer 3HK$12,973 HKD
Moon OceanHK$13,600 HKD

25 data points across 16 retailers

18 retailersHK$5,624 HKD to HK$13,600 HKD

A
Cheapest Retailer
-
HK$5,624 HKD
A
Retailer 2
-
HK$6,394 HKD
$815 USD
View
Final sale: no returns
A
Retailer 3
-
HK$7,453 HKD
$950 USD
View
A
Retailer 4
-
HK$7,704 HKD
$982 USD
View
Retailer 5
-
HK$7,786 HKD
SGD 1,341 SGD
View
Price last confirmed 9 days ago
A
Retailer 6
-
HK$8,098 HKD
£813 GBP
View
B+
Retailer 7
-
HK$8,277 HKD
$1,055 USD
View
A
Retailer 8
-
HK$8,488 HKD
SGD 1,462 SGD
View
B+
Retailer 9
-
HK$8,599 HKD
$1,096 USD
View
B+
Retailer 10
-
HK$9,108 HKD
$1,161 USD
View
B+
Retailer 11
-
HK$9,164 HKD
$1,168 USD
View
B+
Retailer 12
-
HK$9,927 HKD
€1,205 EUR
View
B+
Retailer 13
-
HK$10,321 HKD
ZAR 21,251 ZAR
View
B+
Retailer 14
-
HK$10,444 HKD
A$2,048 AUD
View
Retailer 15
-
HK$10,776 HKD
A$2,113 AUD
View
Price last confirmed 28 days ago
Retailer 16
-
HK$11,620 HKD
$1,481 USD
View
Price last confirmed 8 days ago
Retailer 17
-
HK$12,973 HKD
£1,302 GBP
View
Price last confirmed 11 days ago
Most Expensive
B
Moon Ocean
NVN-557560A9C-429 · Oct 30
HK$13,600 HKD
£1,365 GBP
View
17 more retailers have this diamond
Prices start from HK$5,624 HKDSave up to HK$7,977 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$5,624 HKD