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Cushion|Natural|GIA

0.90ct E SI1 Cushion Natural Diamond

VG • E/SI1 • GIA 2185397505

Certificate GIA 2185397505

Diamond specifications and retailer prices

From HK$6,199 HKD
$790 USD
As of October 28, 2026
Save HK$8,061 HKD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$15,079 HKD at Moon Ocean · As of September 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 E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2185397505. Listed at 15 retailers as of October 28, 2026, with a 130% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.90
Carat
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryGood
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2185397505
Dimensions5.36 × 5.07 × 3.89 mm
L/W Ratio1.06
Top View
5.36 mm5.07 mm0.90 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceStrong
CertificateGIA 2185397505
Side View
Table 66.0%CrownGirdle: Ext. ThickPavilionCulet: NDepth 76.6%

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 28
Current: HK$15,079 HKD|Low: HK$5,932 HKD|High: HK$65,628 HKD|Avg: HK$11,217 HKD|-77.0%
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
Retailer 17
October 30, 2026
Retailer 12HK$6,199 HKD
Retailer 14HK$6,465 HKD
Retailer 7HK$6,488 HKD
Retailer 16HK$7,015 HKD
Retailer 4HK$7,093 HKD
Retailer 6HK$7,580 HKD
Retailer 17HK$8,097 HKD
Retailer 13HK$8,239 HKD
Retailer 2HK$9,071 HKD
Retailer 5HK$9,334 HKD
Retailer 8HK$9,478 HKD
Retailer 11HK$11,312 HKD
Retailer 15HK$11,642 HKD
Retailer 3HK$13,651 HKD
Retailer 10HK$14,260 HKD
Moon OceanHK$15,079 HKD
Retailer 9HK$27,086 HKD

46 data points across 17 retailers

15 retailersHK$6,199 HKD to HK$14,260 HKD

A
Cheapest Retailer
-
HK$6,199 HKD
$790 USD
A
Retailer 2
-
HK$6,465 HKD
$824 USD
View
Final sale: no returns
A
Retailer 3
-
HK$6,488 HKD
$827 USD
View
B+
Retailer 4
-
HK$7,015 HKD
$894 USD
View
B+
Retailer 5
-
HK$7,093 HKD
$904 USD
View
B+
Retailer 6
-
HK$7,580 HKD
$966 USD
View
B+
Retailer 7
-
HK$8,097 HKD
$1,032 USD
View
B+
Retailer 8
-
HK$8,239 HKD
$1,050 USD
View
B+
Retailer 9
-
HK$9,071 HKD
£910 GBP
View
B+
Retailer 10
-
HK$9,478 HKD
$1,208 USD
View
B+
Retailer 11
-
HK$11,312 HKD
ZAR 23,290 ZAR
View
Retailer 12
-
HK$11,642 HKD
A$2,283 AUD
View
Price last confirmed 26 days ago
B+
Retailer 13
-
HK$13,651 HKD
CA$2,416 CAD
View
B+
Retailer 14
-
HK$14,260 HKD
£1,431 GBP
View
Most Expensive
Moon Ocean
NVN-C29FD9320-505 · Sep 30
HK$15,079 HKD
£1,513 GBP
View
Price last confirmed 30 days ago
14 more retailers have this diamond
Prices start from HK$6,199 HKDSave up to HK$8,061 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$6,199 HKD