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Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 5242081367

Certificate GIA 5242081367

Diamond specifications and retailer prices

From £2,041 GBP
HK$21,400 HKD
As of November 2, 2026
Save £2,741 GBP (57%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £4,782 GBP at MOH London · As of November 1, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5242081367. Listed at 22 retailers as of November 1, 2026, with prices from £2,041 to £4,782, a £2,741 spread on the same certified stone. MOH London lists it at £4,782. 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

1.51
Carat
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5242081367
Dimensions6.70 × 6.32 × 4.35 mm
L/W Ratio1.06
Girdle conditionFaceted
Top View
6.70 mm6.32 mm1.51 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5242081367
Side View
Table 67.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 68.8%

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: £4,782 GBP|Low: £1,908 GBP|High: £4,782 GBP|Avg: £2,794 GBP|+1.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 2, 2026
Retailer 13£2,041 GBP
Retailer 10£2,083 GBP
Retailer 6£2,175 GBP
Retailer 8£2,192 GBP
Retailer 21£2,337 GBP
Retailer 4£2,338 GBP
Retailer 5£2,338 GBP
Retailer 7£2,400 GBP
Retailer 18£2,431 GBP
Retailer 17£2,473 GBP
Retailer 20£2,519 GBP
Retailer 19£2,617 GBP
Retailer 12£2,672 GBP
Retailer 15£2,758 GBP
Retailer 11£2,798 GBP
Retailer 2£2,987 GBP
Retailer 14£3,011 GBP
Retailer 16£3,278 GBP
Retailer 3£3,515 GBP
Retailer 9£4,228 GBP
MOH London£4,782 GBP

21 data points across 21 retailers

22 retailers£2,041 GBP to £4,782 GBP

A
Cheapest Retailer
-
£2,041 GBP
HK$21,400 HKD
A
Retailer 2
-
£2,083 GBP
$2,795 USD
View
A
Retailer 3
-
£2,175 GBP
$2,919 USD
View
A
Retailer 4
-
£2,192 GBP
$2,941 USD
View
A
Retailer 5
-
£2,337 GBP
€2,987 EUR
View
A
Retailer 6
-
£2,338 GBP
$3,137 USD
View
A
Retailer 7
-
£2,338 GBP
$3,138 USD
View
A
Retailer 8
-
£2,400 GBP
$3,220 USD
View
A
Retailer 9
-
£2,431 GBP
$3,262 USD
View
Final sale: no returns
A
Retailer 10
-
£2,473 GBP
$3,319 USD
View
A
Retailer 11
-
£2,519 GBP
$3,380 USD
View
A
Retailer 12
-
£2,617 GBP
View
Retailer 13
-
£2,672 GBP
SGD 4,846 SGD
View
Price last confirmed 14 days ago
Retailer 14
-
£2,753 GBP
€3,518 EUR
View
Price last confirmed 14 days ago
A
Retailer 15
-
£2,758 GBP
View
A
Retailer 16
-
£2,987 GBP
$4,008 USD
View
Retailer 17
-
£3,011 GBP
A$6,216 AUD
View
Price last confirmed 24 days ago
B+
Retailer 18
-
£3,278 GBP
€4,189 EUR
View
B+
Retailer 19
-
£3,515 GBP
ZAR 76,198 ZAR
View
Retailer 20
-
£4,124 GBP
$5,534 USD
View
Price last confirmed 13 days ago
B+
Retailer 21
-
£4,228 GBP
$5,674 USD
View
Most Expensive
B+
MOH London
83C7A565F · Nov 1
£4,782 GBP
View
21 more retailers have this diamond
Prices start from £2,041 GBPSave up to £2,741 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
£2,041 GBP