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Cushion|Natural|GIA

1.51ct M SI1 Cushion Natural Diamond

M/SI1 • GIA 7556422306

Certificate GIA 7556422306

Diamond specifications and retailer prices

From £1,996 GBP
As of November 6, 2026
Save £1,083 GBP (35%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £3,079 GBP at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

About this 1.51ct natural cushion diamond

This 1.51ct 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 7556422306. Listed at 7 retailers as of November 5, 2026, with prices from £1,996 to £3,079, a £1,083 spread on the same certified stone. Cape Diamonds lists it at £3,079. 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

1.51
Carat
M
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7556422306
Dimensions7.92 × 5.63 × 3.62 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Pinpoint
Top View
7.92 mm5.63 mm1.51 ctM / SI1
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7556422306
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 64.2%

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: £3,079 GBP|Low: £1,996 GBP|High: £3,337 GBP|Avg: £2,638 GBP|-7.7%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2£1,996 GBP
Retailer 5£2,436 GBP
Retailer 3£2,513 GBP
Retailer 7£2,544 GBP
Retailer 6£2,630 GBP
Retailer 4£2,936 GBP
Cape Diamonds£3,079 GBP

41 data points across 7 retailers

7 retailers£1,996 GBP to £3,079 GBP

B+
Cheapest Retailer
-
£1,996 GBP
B
Retailer 2
-
£2,436 GBP
View
B
Retailer 3
-
£2,513 GBP
View
Retailer 4
-
£2,544 GBP
View
Price last confirmed 9 days ago
B
Retailer 5
-
£2,630 GBP
View
B
Retailer 6
-
£2,936 GBP
View
Most Expensive
C
Cape Diamonds
cert_7556422306 · Nov 5
£3,079 GBP
ZAR 66,571 ZAR
View
6 more retailers have this diamond
Prices start from £1,996 GBPSave up to £1,083 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+
1.51ct Cushion
£1,996 GBP