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Cushion|Natural|GIA

1.71ct J SI1 Cushion Natural Diamond

VG • J/SI1 • GIA 2158274503

Certificate GIA 2158274503

Diamond specifications and retailer prices

From £5,504 GBP
$7,375 USD
As of October 28, 2026
Save £2,161 GBP (28%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £10,187 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.71ct natural cushion diamond

This 1.71ct natural cushion sits in the one-and-a-half to two 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 2158274503. Listed at 9 retailers as of October 28, 2026, with a 39% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.71
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2158274503
Dimensions6.88 × 6.65 × 4.41 mm
L/W Ratio1.03
Culet sizeNone
Top View
6.88 mm6.65 mm1.71 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 2158274503
Side View
Table 67.0%CrownGirdle: VTN-THKPavilionCulet: NoneDepth 66.3%

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: Oct 28
Current: £10,187 GBP|Low: £5,384 GBP|High: £10,310 GBP|Avg: £7,186 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 4£5,504 GBP
Retailer 5£5,922 GBP
Retailer 6£6,886 GBP
Retailer 3£6,895 GBP
Retailer 7£7,307 GBP
Retailer 2£7,665 GBP
MOH London£10,187 GBP

41 data points across 7 retailers

9 retailers£5,504 GBP to £7,665 GBP

B
Cheapest Retailer
-
£5,504 GBP
$7,375 USD
B
Retailer 2
-
£5,922 GBP
$7,935 USD
View
Final sale: no returns
C
Retailer 3
-
£6,886 GBP
$9,226 USD
View
B
Retailer 4
-
£6,895 GBP
View
C
Retailer 5
-
£7,307 GBP
$9,790 USD
View
C
Retailer 6
-
£7,307 GBP
$9,790 USD
View
C
Retailer 7
-
£7,553 GBP
$10,120 USD
View
B
Retailer 8
-
£7,665 GBP
€9,781 EUR
View
Most Expensive
MOH London
466CBE57A · Nov 1
£10,187 GBP
View
Price under review
8 more retailers have this diamond
Prices start from £5,504 GBPSave up to £2,161 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
1.71ct Cushion
£5,504 GBP