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Cushion|Natural|GIA

1.05ct J SI1 Cushion Natural Diamond

ID • J/SI1 • GIA 2235390877

Certificate GIA 2235390877

Diamond specifications and retailer prices

From £1,026 GBP
$1,377 USD
As of November 1, 2026
Save £1,115 GBP (52%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,141 GBP at MOH London · As of November 2, 2026
View at MOH London

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2235390877. Listed at 12 retailers as of November 1, 2026, with prices from £1,026 to £2,141, a £1,115 spread on the same certified stone. MOH London lists it at £2,141. 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

1.05
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2235390877
Dimensions6.08 × 5.45 × 3.74 mm
L/W Ratio1.12
Girdle conditionFaceted
Top View
6.08 mm5.45 mm1.05 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2235390877
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 68.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £2,141 GBP|Low: £1,030 GBP|High: £2,166 GBP|Avg: £1,434 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 6£1,030 GBP
Retailer 5£1,107 GBP
Retailer 7£1,140 GBP
Retailer 3£1,369 GBP
Retailer 4£1,594 GBP
Retailer 2£1,668 GBP
MOH London£2,141 GBP

43 data points across 7 retailers

12 retailers£1,026 GBP to £2,141 GBP

A
Cheapest Retailer
-
£1,026 GBP
$1,377 USD
A
Retailer 2
-
£1,030 GBP
$1,382 USD
View
A
Retailer 3
-
£1,059 GBP
A$2,187 AUD
View
A
Retailer 4
-
£1,068 GBP
$1,433 USD
View
B+
Retailer 5
-
£1,107 GBP
$1,486 USD
View
B+
Retailer 6
-
£1,140 GBP
$1,530 USD
View
B+
Retailer 7
-
£1,166 GBP
$1,565 USD
View
B+
Retailer 8
-
£1,339 GBP
$1,797 USD
View
B+
Retailer 9
-
£1,369 GBP
View
Retailer 10
-
£1,594 GBP
A$3,292 AUD
View
Price last confirmed 28 days ago
B+
Retailer 11
-
£1,668 GBP
€2,132 EUR
View
Most Expensive
B
MOH London
FFDE4FBC7 · Nov 2
£2,141 GBP
View
11 more retailers have this diamond
Prices start from £1,026 GBPSave up to £1,115 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.

A
1.05ct Cushion
£1,026 GBP