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Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

VG • I/SI1 • GIA 5172058360

Certificate GIA 5172058360

Diamond specifications and retailer prices

From £2,913 GBP
$3,909 USD
As of November 2, 2026
Save £3,221 GBP (53%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £6,134 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded I 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 5172058360. Listed at 23 retailers as of October 29, 2026, with prices from £2,913 to £6,134, a £3,221 spread on the same certified stone. MOH London lists it at £6,134. 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

1.51
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5172058360
Dimensions6.59 × 6.23 × 4.30 mm
L/W Ratio1.06
Top View
6.59 mm6.23 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceMedium
CertificateGIA 5172058360
Side View
Table 66.0%CrownGirdle: STK-EXTPavilionCulet: NoneDepth 69.0%

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 2
Current: £6,134 GBP|Low: £3,051 GBP|High: £6,175 GBP|Avg: £4,041 GBP|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8£3,051 GBP
Retailer 6£3,089 GBP
Retailer 9£3,470 GBP
Retailer 2£3,635 GBP
Retailer 4£3,824 GBP
Retailer 7£3,862 GBP
Retailer 3£4,333 GBP
Retailer 5£4,709 GBP
MOH London£6,134 GBP

36 data points across 9 retailers

23 retailers£2,913 GBP to £6,134 GBP

A
Cheapest Retailer
-
£2,913 GBP
$3,909 USD
B+
Retailer 2
-
£2,993 GBP
$4,016 USD
View
B+
Retailer 3
-
£3,026 GBP
$4,061 USD
View
B+
Retailer 4
-
£3,051 GBP
$4,094 USD
View
Final sale: no returns
B+
Retailer 5
-
£3,062 GBP
$4,110 USD
View
Retailer 6
-
£3,089 GBP
$4,145 USD
View
Price last confirmed 14 days ago
B+
Retailer 7
-
£3,277 GBP
CA$6,108 CAD
View
B+
Retailer 8
-
£3,279 GBP
$4,400 USD
View
B+
Retailer 9
-
£3,470 GBP
$4,657 USD
View
B+
Retailer 10
-
£3,635 GBP
View
B+
Retailer 11
-
£3,648 GBP
$4,896 USD
View
B+
Retailer 12
-
£3,654 GBP
$4,904 USD
View
B+
Retailer 13
-
£3,663 GBP
$4,916 USD
View
B+
Retailer 14
-
£3,824 GBP
View
Retailer 15
-
£3,862 GBP
A$7,973 AUD
View
Price last confirmed 23 days ago
B+
Retailer 16
-
£3,897 GBP
$5,230 USD
View
B+
Retailer 17
-
£3,897 GBP
$5,230 USD
View
B
Retailer 18
-
£4,024 GBP
$5,400 USD
View
Retailer 19
-
£4,228 GBP
$5,674 USD
View
Price last confirmed 10 days ago
B
Retailer 20
-
£4,333 GBP
€5,538 EUR
View
B
Retailer 21
-
£4,709 GBP
ZAR 102,081 ZAR
View
B
Retailer 22
-
£5,545 GBP
$7,441 USD
View
Most Expensive
B
MOH London
24751E2B7 · Oct 29
£6,134 GBP
View
22 more retailers have this diamond
Prices start from £2,913 GBPSave up to £3,221 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
1.51ct Cushion
£2,913 GBP