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Cushion|Natural|GIA

1.13ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 1172401107

Certificate GIA 1172401107

Diamond specifications and retailer prices

From £2,688 GBP
$3,607 USD
As of November 1, 2026
Save £1,106 GBP (29%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £3,794 GBP at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 1.13ct natural cushion diamond

This 1.13ct 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 1172401107. Listed at 3 retailers as of November 1, 2026, with prices from £2,688 to £3,794, a £1,106 spread on the same certified stone. 77 Diamonds lists it at £3,794. 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

1.13
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1172401107
Dimensions6.44 × 5.58 × 3.90 mm
L/W Ratio1.15
Top View
6.44 mm5.58 mm1.13 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 1172401107
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 70.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 1
Current: £3,794 GBP|Low: £3,715 GBP|High: £3,807 GBP|Avg: £3,779 GBP|+0.7%
November 2, 2026
77 Diamonds£3,794 GBP

33 data points across 1 retailer

3 retailers£2,688 GBP to £3,794 GBP

B
Cheapest Retailer
-
£2,688 GBP
$3,607 USD
B
Retailer 2
-
£2,715 GBP
$3,644 USD
View
Most Expensive
B
77 Diamonds
CUSZDCQECJBH · Nov 2
£3,794 GBP
View
2 more retailers have this diamond
Prices start from £2,688 GBPSave up to £1,106 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
1.13ct Cushion
£2,688 GBP