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Cushion|Natural|GIA

3.51ct H SI1 Cushion Natural Diamond

VG • H/SI1 • GIA 3555137190

Certificate GIA 3555137190

Diamond specifications and retailer prices

From £24,529 GBP
As of November 6, 2026
Save £20,944 GBP (46%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £45,473 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 3.51ct natural cushion diamond

This 3.51ct natural cushion sits in the three to five carat band, graded H 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 3555137190. Listed at 11 retailers as of November 4, 2026, with prices from £24,529 to £45,473, a £20,944 spread on the same certified stone. MOH London lists it at £45,473. 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

3.51
Carat
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle55.6°
OriginNatural
Grading LabGIA
CertificateGIA 3555137190
Dimensions10.14 × 8.17 × 5.56 mm
L/W Ratio1.24
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
10.14 mm8.17 mm3.51 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555137190
Side View
Table 69.0%Crown 32.4°Girdle: THK-VTKPavilion 55.6°Culet: NoneDepth 68.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £45,473 GBP|Low: £24,214 GBP|High: £45,655 GBP|Avg: £30,859 GBP|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 4, 2026
Retailer 4£24,214 GBP
Retailer 3£24,529 GBP
Retailer 10£26,844 GBP
Retailer 11£29,016 GBP
Retailer 12£31,667 GBP
Retailer 7£31,812 GBP
Retailer 9£31,812 GBP
Retailer 8£32,873 GBP
Retailer 2£33,523 GBP
Retailer 6£35,268 GBP
Retailer 5£35,276 GBP
MOH London£45,473 GBP

28 data points across 12 retailers

11 retailers£24,529 GBP to £45,473 GBP

B+
Cheapest Retailer
-
£24,529 GBP
B+
Retailer 2
-
£26,844 GBP
View
B+
Retailer 3
-
£29,016 GBP
View
B
Retailer 4
-
£31,667 GBP
View
B
Retailer 5
-
£31,812 GBP
View
B
Retailer 6
-
£31,812 GBP
View
B
Retailer 7
-
£32,873 GBP
View
B
Retailer 8
-
£33,523 GBP
View
B
Retailer 9
-
£35,268 GBP
View
B
Retailer 10
-
£35,276 GBP
View
Most Expensive
B
MOH London
74892BBF9 · Nov 4
£45,473 GBP
View
10 more retailers have this diamond
Prices start from £24,529 GBPSave up to £20,944 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+
3.51ct Cushion
£24,529 GBP