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Cushion|Natural|GIA

1.05ct J SI1 Cushion Natural Diamond

VG • J/SI1 • GIA 6147515389

Certificate GIA 6147515389

Diamond specifications and retailer prices

From $2,921 AUD
$2,047 USD
As of November 1, 2026
Save $1,377 AUD (32%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,298 AUD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 1.05ct natural cushion diamond

This 1.05ct natural cushion sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6147515389. Listed at 2 retailers as of November 1, 2026, with prices from $2,921 to $4,298, a $1,377 spread on the same certified stone. 77 Diamonds lists it at $4,298. 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

1.05
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6147515389
Dimensions6.43 × 5.36 × 3.86 mm
L/W Ratio1.20
Top View
6.43 mm5.36 mm1.05 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 6147515389
Side View
Table 61.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 72.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 1
Current: $4,298 AUD|Low: $4,234 AUD|High: $4,334 AUD|Avg: $4,303 AUD|+1.4%
November 1, 2026
77 Diamonds$4,298 AUD

31 data points across 1 retailer

2 retailers$2,921 AUD to $4,298 AUD

B
Cheapest Retailer
-
$2,921 AUD
$2,047 USD
Most Expensive
C
77 Diamonds
CUSZZBTVTUQP · Nov 1
$4,298 AUD
£2,372 GBP
View
1 more retailer has this diamond
Prices start from $2,921 AUDSave up to $1,377 AUD

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.

B
1.05ct Cushion
$2,921 AUD