CaratHunter
Plans
Cushion|Natural|GIA

1.50ct M SI1 Cushion Natural Diamond

M/SI1 • GIA 3555312495

Certificate GIA 3555312495

Diamond specifications and retailer prices

From £1,650 GBP
As of November 6, 2026
Save £881 GBP (35%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £2,530 GBP at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

About this 1.5ct natural cushion diamond

This 1.5ct natural cushion sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included) and certified by GIA 3555312495. Listed at 6 retailers as of November 5, 2026, with prices from £1,650 to £2,530, a £881 spread on the same certified stone. Cape Diamonds lists it at £2,530. 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

1.50
Carat
M
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3555312495
Dimensions7.54 × 5.40 × 3.76 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
7.54 mm5.40 mm1.50 ctM / SI1
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3555312495
Side View
Table 69.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 69.7%

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: £2,530 GBP|Low: £1,650 GBP|High: £2,727 GBP|Avg: £2,194 GBP|-5.9%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 2£1,650 GBP
Retailer 4£2,036 GBP
Retailer 6£2,084 GBP
Retailer 5£2,179 GBP
Retailer 3£2,413 GBP
Cape Diamonds£2,530 GBP

45 data points across 6 retailers

6 retailers£1,650 GBP to £2,530 GBP

B+
Cheapest Retailer
-
£1,650 GBP
B
Retailer 2
-
£2,036 GBP
View
Retailer 3
-
£2,084 GBP
View
Price last confirmed 9 days ago
B
Retailer 4
-
£2,179 GBP
View
B
Retailer 5
-
£2,413 GBP
View
Most Expensive
B
Cape Diamonds
cert_3555312495 · Nov 5
£2,530 GBP
ZAR 54,716 ZAR
View
5 more retailers have this diamond
Prices start from £1,650 GBPSave up to £881 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+
1.50ct Cushion
£1,650 GBP