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Cushion|Natural|GIA

1.81ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 7451255837

Certificate GIA 7451255837

Diamond specifications and retailer prices

From £1,974 GBP
As of November 4, 2026
Save £2,316 GBP (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,290 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.81ct natural cushion diamond

This 1.81ct natural cushion sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7451255837. Listed at 14 retailers as of November 4, 2026, with prices from £1,974 to £4,290, a £2,316 spread on the same certified stone. MOH London lists it at £4,290. 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

1.81
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7451255837
Dimensions6.80 × 6.65 × 4.52 mm
L/W Ratio1.02
Top View
6.80 mm6.65 mm1.81 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7451255837
Side View
Table 65.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.0%

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 4
Current: £4,290 GBP|Low: £1,974 GBP|High: £4,348 GBP|Avg: £2,747 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7£1,974 GBP
Retailer 6£2,264 GBP
Retailer 8£2,330 GBP
Retailer 2£2,471 GBP
Retailer 9£2,489 GBP
Retailer 5£2,663 GBP
Retailer 3£2,966 GBP
Retailer 4£3,139 GBP
MOH London£4,290 GBP

38 data points across 9 retailers

14 retailers£1,974 GBP to £4,290 GBP

A
Cheapest Retailer
-
£1,974 GBP
A
Retailer 2
-
£2,087 GBP
View
B+
Retailer 3
-
£2,264 GBP
View
Retailer 4
-
£2,330 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£2,333 GBP
View
B+
Retailer 6
-
£2,346 GBP
View
A
Retailer 7
-
£2,471 GBP
View
B+
Retailer 8
-
£2,489 GBP
View
B+
Retailer 9
-
£2,508 GBP
View
B+
Retailer 10
-
£2,663 GBP
View
Retailer 11
-
£2,914 GBP
View
Price last confirmed 14 days ago
B+
Retailer 12
-
£2,966 GBP
View
B+
Retailer 13
-
£3,139 GBP
View
Most Expensive
B
MOH London
9C11DC99E · Nov 4
£4,290 GBP
View
13 more retailers have this diamond
Prices start from £1,974 GBPSave up to £2,316 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
1.81ct Cushion
£1,974 GBP