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Cushion|Natural|GIA

1.06ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 2478803886

Certificate GIA 2478803886

Diamond specifications and retailer prices

From £1,205 GBP
$1,615 USD
As of October 31, 2026
Save £116 GBP (9%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £1,321 GBP at Jared · As of November 2, 2026
View at Jared

About this 1.06ct natural cushion diamond

This 1.06ct 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 2478803886. Listed at 4 retailers as of October 31, 2026, with a relatively tight 10% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.06
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2478803886
Dimensions6.57 × 5.85 × 3.71 mm
L/W Ratio1.12
Top View
6.57 mm5.85 mm1.06 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2478803886
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £1,321 GBP|Low: £1,205 GBP|High: £1,668 GBP|Avg: £1,422 GBP|-7.3%
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
September 26, 2026
Retailer 2£1,205 GBP
Retailer 3£1,284 GBP
Retailer 4£1,284 GBP
Jared£1,321 GBP
Retailer 6£1,328 GBP
Retailer 5£1,668 GBP

9 data points across 6 retailers

4 retailers£1,205 GBP to £1,321 GBP

B+
Cheapest Retailer
-
£1,205 GBP
$1,615 USD
B+
Retailer 2
-
£1,284 GBP
$1,720 USD
View
B+
Retailer 3
-
£1,284 GBP
$1,720 USD
View
Most Expensive
B+
Jared
149163172 · Nov 2
£1,321 GBP
$1,770 USD
View
3 more retailers have this diamond
Prices start from £1,205 GBPSave up to £116 GBP

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+
1.06ct Cushion
£1,205 GBP