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Cushion|Natural|GIA

1.00ct J SI1 Cushion Natural Diamond

VG • J/SI1 • GIA 6271512387

Certificate GIA 6271512387

Diamond specifications and retailer prices

From £1,726 GBP
As of November 6, 2026
Save £1,915 GBP (53%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £3,641 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6271512387. Listed at 22 retailers as of November 4, 2026, with prices from £1,726 to £3,641, a £1,915 spread on the same certified stone. MOH London lists it at £3,641. 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

1.00
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6271512387
Dimensions6.03 × 5.49 × 3.84 mm
L/W Ratio1.10
Top View
6.03 mm5.49 mm1.00 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6271512387
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 69.8%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,641 GBP|Low: £1,521 GBP|High: £3,695 GBP|Avg: £2,217 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 3£1,726 GBP
Retailer 7£1,745 GBP
Retailer 10£1,771 GBP
Retailer 8£1,825 GBP
Retailer 4£1,950 GBP
Retailer 11£1,978 GBP
Retailer 12£2,146 GBP
Retailer 5£2,297 GBP
Retailer 2£2,393 GBP
Retailer 9£2,445 GBP
Retailer 6£2,664 GBP
MOH London£3,641 GBP

45 data points across 12 retailers

22 retailers£1,726 GBP to £3,641 GBP

B
Cheapest Retailer
-
£1,726 GBP
Retailer 2
-
£1,745 GBP
View
Price last confirmed 10 days ago
B
Retailer 3
-
£1,771 GBP
View
B
Retailer 4
-
£1,777 GBP
View
B
Retailer 5
-
£1,825 GBP
View
Final sale: no returns
B
Retailer 6
-
£1,834 GBP
View
B
Retailer 7
-
£1,866 GBP
View
B
Retailer 8
-
£1,874 GBP
View
B
Retailer 9
-
£1,950 GBP
View
Retailer 10
-
£1,978 GBP
View
Price last confirmed 9 days ago
B
Retailer 11
-
£2,145 GBP
View
B
Retailer 12
-
£2,146 GBP
View
B
Retailer 13
-
£2,161 GBP
View
B
Retailer 14
-
£2,264 GBP
View
B
Retailer 15
-
£2,264 GBP
View
B
Retailer 16
-
£2,297 GBP
View
B
Retailer 17
-
£2,338 GBP
View
B
Retailer 18
-
£2,393 GBP
View
Retailer 19
-
£2,445 GBP
View
Price last confirmed 31 days ago
Retailer 20
-
£2,534 GBP
View
Price last confirmed 15 days ago
B
Retailer 21
-
£2,664 GBP
View
Most Expensive
B
MOH London
0ECEBF537 · Nov 4
£3,641 GBP
View
21 more retailers have this diamond
Prices start from £1,726 GBPSave up to £1,915 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
1.00ct Cushion
£1,726 GBP