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Cushion|Natural|GIA

0.90ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 1379395697

Certificate GIA 1379395697

Diamond specifications and retailer prices

From £988 GBP
As of November 6, 2026
Save £1,135 GBP (53%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,123 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 0.9ct natural cushion diamond

This 0.9ct natural cushion sits in the just-under-one-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 1379395697. Listed at 9 retailers as of November 4, 2026, with prices from £988 to £2,123, a £1,135 spread on the same certified stone. MOH London lists it at £2,123. 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

0.90
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1379395697
Dimensions5.66 × 5.21 × 3.64 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizeNone
Top View
5.66 mm5.21 mm0.90 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1379395697
Side View
Table 62.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 69.8%

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: £2,123 GBP|Low: £1,020 GBP|High: £2,154 GBP|Avg: £1,352 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4£1,020 GBP
Retailer 7£1,030 GBP
Retailer 6£1,035 GBP
Retailer 5£1,226 GBP
Retailer 3£1,347 GBP
Retailer 2£1,650 GBP
MOH London£2,123 GBP

42 data points across 7 retailers

9 retailers£988 GBP to £2,123 GBP

B+
Cheapest Retailer
-
£988 GBP
B+
Retailer 2
-
£1,006 GBP
View
Retailer 3
-
£1,020 GBP
View
Price last confirmed 17 days ago
B+
Retailer 4
-
£1,030 GBP
View
B+
Retailer 5
-
£1,035 GBP
View
B
Retailer 6
-
£1,226 GBP
View
B
Retailer 7
-
£1,347 GBP
View
B
Retailer 8
-
£1,650 GBP
View
Most Expensive
B
MOH London
6991929C8 · Nov 4
£2,123 GBP
View
8 more retailers have this diamond
Prices start from £988 GBPSave up to £1,135 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+
0.90ct Cushion
£988 GBP