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Cushion|Natural|GIA

0.80ct J SI2 Cushion Natural Diamond

VG • J/SI2 • GIA 6545064075

Certificate GIA 6545064075

Diamond specifications and retailer prices

From $1,113 AUD
£616 GBP
As of November 2, 2026
Save $84 AUD (7%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,197 AUD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 0.8ct natural cushion diamond

This 0.8ct natural cushion sits in the just-under-one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6545064075. Listed at 3 retailers as of October 31, 2026, with a relatively tight 8% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

0.80
Carat
J
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle30.3°
Pavilion angle54.1°
OriginNatural
Grading LabGIA
CertificateGIA 6545064075
Dimensions6.18 × 5.05 × 3.45 mm
L/W Ratio1.22
Top View
6.18 mm5.05 mm0.80 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6545064075
Side View
Table 66.0%Crown 30.3°Girdle: MED-THKPavilion 54.1°Culet: NoneDepth 68.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: $1,197 AUD|Low: $1,041 AUD|High: $1,260 AUD|Avg: $1,175 AUD|-1.6%
Blue Nile
Retailer 2
Retailer 3
November 2, 2026
Retailer 2$1,113 AUD
Retailer 3$1,182 AUD
Blue Nile$1,197 AUD

35 data points across 3 retailers

3 retailers$1,113 AUD to $1,197 AUD

A
Cheapest Retailer
-
$1,113 AUD
£616 GBP
B+
Retailer 2
-
$1,182 AUD
$830 USD
View
Most Expensive
B+
Blue Nile
27411220 · Oct 31
$1,197 AUD
$841 USD
View
2 more retailers have this diamond
Prices start from $1,113 AUDSave up to $84 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.

A
0.80ct Cushion
$1,113 AUD