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Cushion|Natural|GIA

1.06ct J SI1 Cushion Natural Diamond

ID • J/SI1 • GIA 1259302726

Certificate GIA 1259302726

Diamond specifications and retailer prices

From £2,261 GBP
$3,034 USD
As of October 31, 2026
Save £198 GBP (8%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,459 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 1259302726. Listed at 4 retailers as of October 31, 2026, with a relatively tight 9% 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1259302726
Dimensions5.84 × 5.69 × 3.83 mm
L/W Ratio1.03
Top View
5.84 mm5.69 mm1.06 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1259302726
Side View
Table 62.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 67.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
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Price History

Last verified: Oct 31
Current: £2,459 GBP|Low: £2,261 GBP|High: £2,459 GBP|Avg: £2,395 GBP
Jared
Retailer 2
Retailer 3
Retailer 4
September 26, 2026
Retailer 2£2,261 GBP
Retailer 3£2,385 GBP
Retailer 4£2,385 GBP
Jared£2,459 GBP

4 data points across 4 retailers

4 retailers£2,261 GBP to £2,459 GBP

B
Cheapest Retailer
-
£2,261 GBP
$3,034 USD
B
Retailer 2
-
£2,385 GBP
$3,200 USD
View
B
Retailer 3
-
£2,385 GBP
$3,200 USD
View
Most Expensive
B
Jared
135947989 · Nov 2
£2,459 GBP
$3,300 USD
View
3 more retailers have this diamond
Prices start from £2,261 GBPSave up to £198 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
£2,261 GBP