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Cushion|Natural|GIA

1.15ct J SI1 Cushion Natural Diamond

ID • J/SI1 • GIA 6462866552

Certificate GIA 6462866552

Diamond specifications and retailer prices

From £894 GBP
$1,200 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: £894 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1.15ct natural cushion diamond

This 1.15ct natural cushion sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6462866552. Listed at a single retailer as of November 2, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.15
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6462866552
Dimensions6.29 × 5.81 × 3.98 mm
L/W Ratio1.08
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Cloud, Feather, Etch Channel, Needle, Natural
Top View
6.29 mm5.81 mm1.15 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6462866552
Side View
Table 60.0%CrownGirdlePavilionCulet: NoneDepth 68.5%

Caratlytics Score

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

Last verified: Nov 2
Current: £894 GBP|Low: £879 GBP|High: £1,339 GBP|Avg: £1,016 GBP|+1.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
June 12, 2026
Brilliant Earth£894 GBP
Retailer 4£1,004 GBP
Retailer 2£1,004 GBP
Retailer 3£1,339 GBP

26 data points across 4 retailers

1 retailer

A
Brilliant Earth
16607156Y · Nov 2
£894 GBP
$1,200 USD
View

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
1.15ct Cushion
£894 GBP