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Cushion|Natural|GIA

1.15ct J SI1 Cushion Natural Diamond

GD • J/SI1 • GIA 6512646165

Certificate GIA 6512646165

Diamond specifications and retailer prices

From £2,061 GBP
A$4,254 AUD
As of November 2, 2026
Save £2,058 GBP (50%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,119 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.15ct natural cushion diamond

This 1.15ct 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 6512646165. Listed at 8 retailers as of November 2, 2026, with prices from £2,061 to £4,119, a £2,058 spread on the same certified stone. MOH London lists it at £4,119. 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

1.15
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6512646165
Dimensions7.04 × 5.24 × 3.45 mm
L/W Ratio1.34
Girdle conditionFaceted
Key to symbols
Crystal, Pinpoint
Top View
7.04 mm5.24 mm1.15 ctJ / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6512646165
Side View
Table 64.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 65.8%

Caratlytics Score

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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 2
Current: £4,119 GBP|Low: £2,215 GBP|High: £4,169 GBP|Avg: £2,777 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 6£2,245 GBP
Retailer 4£2,247 GBP
Retailer 3£2,574 GBP
Retailer 5£2,631 GBP
Retailer 2£2,883 GBP
MOH London£4,119 GBP

43 data points across 6 retailers

8 retailers£2,061 GBP to £4,119 GBP

B
Cheapest Retailer
-
£2,061 GBP
A$4,254 AUD
B
Retailer 2
-
£2,245 GBP
$3,012 USD
View
B
Retailer 3
-
£2,247 GBP
$3,015 USD
View
B
Retailer 4
-
£2,574 GBP
View
Retailer 5
-
£2,631 GBP
A$5,432 AUD
View
Price last confirmed 25 days ago
C
Retailer 6
-
£2,729 GBP
$3,662 USD
View
C
Retailer 7
-
£2,883 GBP
€3,684 EUR
View
Most Expensive
C
MOH London
C085340B7 · Nov 2
£4,119 GBP
View
7 more retailers have this diamond
Prices start from £2,061 GBPSave up to £2,058 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
1.15ct Cushion
£2,061 GBP