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Cushion|Natural|GIA

1.29ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 5553493585

Certificate GIA 5553493585

Diamond specifications and retailer prices

From £1,267 GBP
As of November 6, 2026
Save £1,132 GBP (47%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,399 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.29ct natural cushion diamond

This 1.29ct natural cushion sits in the one-and-a-quarter to one-and-a-half 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 5553493585. Listed at 4 retailers as of November 4, 2026, with prices from £1,267 to £2,399, a £1,132 spread on the same certified stone. MOH London lists it at £2,399. 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

1.29
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553493585
Dimensions6.01 × 5.99 × 4.17 mm
L/W Ratio1.00
Key to symbols
Crystal, Feather
Top View
6.01 mm5.99 mm1.29 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553493585
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,399 GBP|Low: £1,132 GBP|High: £2,742 GBP|Avg: £1,794 GBP|-12.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4£1,267 GBP
Retailer 3£1,414 GBP
Retailer 2£1,808 GBP
MOH London£2,399 GBP

27 data points across 4 retailers

4 retailers£1,267 GBP to £2,399 GBP

A
Cheapest Retailer
-
£1,267 GBP
Final sale: no returns
A
Retailer 2
-
£1,414 GBP
View
B+
Retailer 3
-
£1,808 GBP
View
Most Expensive
B
MOH London
95C28DB09 · Nov 4
£2,399 GBP
View
3 more retailers have this diamond
Prices start from £1,267 GBPSave up to £1,132 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
1.29ct Cushion
£1,267 GBP