CaratHunter
Plans
Cushion|Natural|GIA

1.00ct J SI1 Cushion Natural Diamond

GD • J/SI1 • GIA 6542807611

Certificate GIA 6542807611

Diamond specifications and retailer prices

From £649 GBP
As of November 6, 2026
Save £947 GBP (59%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,596 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6542807611. Listed at 16 retailers as of November 4, 2026, with prices from £649 to £1,596, a £947 spread on the same certified stone. MOH London lists it at £1,596. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542807611
Dimensions6.26 × 5.03 × 3.52 mm
L/W Ratio1.24
Top View
6.26 mm5.03 mm1.00 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542807611
Side View
Table 66.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 70.0%

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 6
Current: £1,596 GBP|Low: £649 GBP|High: £1,648 GBP|Avg: £961 GBP|-3.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 2£649 GBP
Retailer 4£682 GBP
Retailer 15£838 GBP
Retailer 12£840 GBP
Retailer 8£847 GBP
Retailer 6£873 GBP
Retailer 7£873 GBP
Retailer 3£956 GBP
Retailer 14£963 GBP
Retailer 5£973 GBP
Retailer 13£975 GBP
Retailer 10£980 GBP
Retailer 11£1,065 GBP
Retailer 9£1,215 GBP
MOH London£1,596 GBP

20 data points across 15 retailers

16 retailers£649 GBP to £1,596 GBP

A
Cheapest Retailer
-
£649 GBP
A
Retailer 2
-
£682 GBP
View
Final sale: no returns
B+
Retailer 3
-
£838 GBP
View
B+
Retailer 4
-
£840 GBP
View
B+
Retailer 5
-
£847 GBP
View
B+
Retailer 6
-
£873 GBP
View
Retailer 7
-
£873 GBP
View
Price last confirmed 9 days ago
B+
Retailer 8
-
£956 GBP
View
B+
Retailer 9
-
£963 GBP
View
B+
Retailer 10
-
£973 GBP
View
B+
Retailer 11
-
£975 GBP
View
B+
Retailer 12
-
£980 GBP
View
B+
Retailer 13
-
£1,065 GBP
View
B+
Retailer 14
-
£1,215 GBP
View
Retailer 15
-
£1,227 GBP
View
Price last confirmed 34 days ago
Most Expensive
B
MOH London
64E8683CE · Nov 4
£1,596 GBP
View
15 more retailers have this diamond
Prices start from £649 GBPSave up to £947 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
1.00ct Cushion
£649 GBP