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Cushion|Natural|GIA

0.90ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 6512878823

Certificate GIA 6512878823

Diamond specifications and retailer prices

From €475 EUR
As of November 6, 2026
Save €705 EUR (60%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €1,180 EUR 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 6512878823. Listed at 8 retailers as of November 4, 2026, with prices from €475 to €1,180, a €705 spread on the same certified stone. MOH London lists it at €1,180. 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
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6512878823
Dimensions5.72 × 5.71 × 3.81 mm
L/W Ratio1.00
Top View
5.72 mm5.71 mm0.90 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6512878823
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.8%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: €1,180 EUR|Low: €475 EUR|High: €1,196 EUR|Avg: €775 EUR|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 3€475 EUR
Retailer 6€550 EUR
Retailer 5€675 EUR
Retailer 2€773 EUR
Retailer 4€911 EUR
MOH London€1,180 EUR

44 data points across 6 retailers

8 retailers€475 EUR to €1,180 EUR

A
Cheapest Retailer
-
€475 EUR
B+
Retailer 2
-
€550 EUR
View
B+
Retailer 3
-
€675 EUR
View
B+
Retailer 4
-
€682 EUR
View
B+
Retailer 5
-
€773 EUR
View
B+
Retailer 6
-
€909 EUR
View
B+
Retailer 7
-
€911 EUR
View
Most Expensive
B
MOH London
92853AFB3 · Nov 4
€1,180 EUR
£1,037 GBP
View
7 more retailers have this diamond
Prices start from €475 EURSave up to €705 EUR

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
0.90ct Cushion
€475 EUR