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Cushion|Natural|GIA

3.50ct M SI1 Cushion Natural Diamond

M/SI1 • GIA 1555767528

Certificate GIA 1555767528

Diamond specifications and retailer prices

From £12,361 GBP
As of November 7, 2026
Save £2,368 GBP (16%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £14,729 GBP at Cape Diamonds · As of November 6, 2026
View at Cape Diamonds

About this 3.5ct natural cushion diamond

This 3.5ct natural cushion sits in the three to five carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included) and certified by GIA 1555767528. Listed at 6 retailers as of November 6, 2026, with prices from £12,361 to £14,729, a £2,368 spread on the same certified stone. Cape Diamonds lists it at £14,729. 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

3.50
Carat
M
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555767528
Dimensions12.03 × 8.38 × 3.95 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural
Top View
12.03 mm8.38 mm3.50 ctM / SI1
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555767528
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 47.2%

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: Nov 7
Current: £14,729 GBP|Low: £12,361 GBP|High: £15,949 GBP|Avg: £13,749 GBP|-7.7%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5£12,361 GBP
Retailer 2£12,640 GBP
Retailer 6£12,799 GBP
Retailer 3£13,804 GBP
Retailer 4£14,032 GBP
Cape Diamonds£14,729 GBP

45 data points across 6 retailers

6 retailers£12,361 GBP to £14,729 GBP

B
Cheapest Retailer
-
£12,361 GBP
B
Retailer 2
-
£12,640 GBP
View
Retailer 3
-
£12,799 GBP
View
Price last confirmed 22 days ago
B
Retailer 4
-
£13,804 GBP
View
B
Retailer 5
-
£14,032 GBP
View
Most Expensive
B
Cape Diamonds
cert_1555767528 · Nov 6
£14,729 GBP
ZAR 318,481 ZAR
View
5 more retailers have this diamond
Prices start from £12,361 GBPSave up to £2,368 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
3.50ct Cushion
£12,361 GBP