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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 $31,287 NZD
As of November 6, 2026
Save $10,924 NZD (26%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $42,211 NZD 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 $31,287 to $42,211, a $10,924 spread on the same certified stone. Blue Nile lists it at $42,211. 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: $42,211 NZD|Low: $31,287 NZD|High: $42,368 NZD|Avg: $35,248 NZD|-0.4%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 3$31,287 NZD
Retailer 2$31,361 NZD
Retailer 6$32,918 NZD
Retailer 5$34,931 NZD
Retailer 4$37,315 NZD
Retailer 7$39,440 NZD
Blue Nile$42,211 NZD

44 data points across 7 retailers

8 retailers$31,287 NZD to $42,211 NZD

A
Cheapest Retailer
-
$31,287 NZD
A
Retailer 2
-
$31,361 NZD
View
B+
Retailer 3
-
$32,918 NZD
View
Final sale: no returns
B+
Retailer 4
-
$34,687 NZD
View
Retailer 5
-
$34,931 NZD
View
Price last confirmed 26 days ago
B+
Retailer 6
-
$37,315 NZD
View
B
Retailer 7
-
$39,440 NZD
View
Most Expensive
B
Blue Nile
30380912 · Oct 31
$42,211 NZD
$23,400 USD
View
7 more retailers have this diamond
Prices start from $31,287 NZDSave up to $10,924 NZD

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
$31,287 NZD