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Cushion|Natural|GIA

1.17ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 2141389121

Certificate GIA 2141389121

Diamond specifications and retailer prices

From £2,800 GBP
$3,758 USD
As of November 1, 2026
Save £1,518 GBP (35%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,319 GBP at Cape Diamonds · As of October 31, 2026
View at Cape Diamonds

About this 1.17ct natural cushion diamond

This 1.17ct 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 2141389121. Listed at 10 retailers as of October 31, 2026, with prices from £2,800 to £4,319, a £1,518 spread on the same certified stone. Cape Diamonds lists it at £4,319. 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

1.17
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2141389121
Dimensions6.31 × 5.75 × 4.67 mm
L/W Ratio1.10
Top View
6.31 mm5.75 mm1.17 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2141389121
Side View
Table 60.0%CrownGirdle: ThinPavilionCulet: NoneDepth 81.3%

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 1
Current: £4,319 GBP|Low: £2,800 GBP|High: £4,319 GBP|Avg: £3,521 GBP|+3.3%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 8£2,800 GBP
Retailer 5£2,865 GBP
Retailer 6£3,183 GBP
Retailer 2£3,427 GBP
Retailer 3£3,494 GBP
Retailer 7£3,542 GBP
Retailer 9£3,879 GBP
Retailer 4£3,976 GBP
Cape Diamonds£4,319 GBP

32 data points across 9 retailers

10 retailers£2,800 GBP to £4,319 GBP

B
Cheapest Retailer
-
£2,800 GBP
$3,758 USD
B
Retailer 2
-
£2,865 GBP
$3,845 USD
View
B
Retailer 3
-
£3,168 GBP
$4,251 USD
View
Retailer 4
-
£3,183 GBP
$4,271 USD
View
Price last confirmed 21 days ago
B
Retailer 5
-
£3,427 GBP
View
B
Retailer 6
-
£3,494 GBP
View
Retailer 7
-
£3,542 GBP
A$7,312 AUD
View
Price last confirmed 24 days ago
Retailer 8
-
£3,879 GBP
$5,206 USD
View
Price last confirmed 10 days ago
B
Retailer 9
-
£3,976 GBP
€5,081 EUR
View
Most Expensive
B
Cape Diamonds
cert_2141389121 · Oct 31
£4,319 GBP
ZAR 93,622 ZAR
View
9 more retailers have this diamond
Prices start from £2,800 GBPSave up to £1,518 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
1.17ct Cushion
£2,800 GBP