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Cushion|Natural|GIA

3.05ct J SI1 Cushion Natural Diamond

GD • J/SI1 • GIA 1558793905

Certificate GIA 1558793905

Diamond specifications and retailer prices

From HK$135,932 HKD
As of November 6, 2026
Save HK$47,463 HKD (26%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$183,395 HKD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 3.05ct natural cushion diamond

This 3.05ct natural cushion sits in the three to five carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1558793905. Listed at 8 retailers as of October 31, 2026, with prices from HK$135,932 to HK$183,395, a HK$47,463 spread on the same certified stone. Blue Nile lists it at HK$183,395. 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

3.05
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1558793905
Dimensions9.77 × 7.49 × 5.11 mm
L/W Ratio1.30
Top View
9.77 mm7.49 mm3.05 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1558793905
Side View
Table 62.0%CrownGirdle: THK-XTKPavilionCulet: NoneDepth 68.3%

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$183,395 HKD|Low: HK$135,932 HKD|High: HK$184,077 HKD|Avg: HK$153,143 HKD|-0.4%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 3HK$135,932 HKD
Retailer 2HK$136,253 HKD
Retailer 6HK$143,017 HKD
Retailer 5HK$151,763 HKD
Retailer 4HK$162,124 HKD
Retailer 7HK$171,357 HKD
Blue NileHK$183,395 HKD

44 data points across 7 retailers

8 retailersHK$135,932 HKD to HK$183,395 HKD

A
Cheapest Retailer
-
HK$135,932 HKD
A
Retailer 2
-
HK$136,253 HKD
View
B+
Retailer 3
-
HK$143,017 HKD
View
Final sale: no returns
B+
Retailer 4
-
HK$150,705 HKD
View
Retailer 5
-
HK$151,763 HKD
View
Price last confirmed 26 days ago
B+
Retailer 6
-
HK$162,124 HKD
View
B
Retailer 7
-
HK$171,357 HKD
View
Most Expensive
B
Blue Nile
30380912 · Oct 31
HK$183,395 HKD
$23,400 USD
View
7 more retailers have this diamond
Prices start from HK$135,932 HKDSave up to HK$47,463 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
3.05ct Cushion
HK$135,932 HKD