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Cushion|Natural|GIA

3.09ct I SI1 Cushion Natural Diamond

GD • I/SI1 • GIA 6542740100

Certificate GIA 6542740100

Diamond specifications and retailer prices

From £15,073 GBP
As of November 6, 2026
Save £727 GBP (5%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £15,800 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 3.09ct natural cushion diamond

This 3.09ct natural cushion sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6542740100. Listed at 2 retailers as of November 6, 2026, with a relatively tight 5% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

3.09
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle57.2°
OriginNatural
Grading LabGIA
CertificateGIA 6542740100
Dimensions9.07 × 7.56 × 5.29 mm
L/W Ratio1.20
Top View
9.07 mm7.56 mm3.09 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542740100
Side View
Table 65.0%Crown 38.3°Girdle: Very ThickPavilion 57.2°Culet: NoneDepth 70.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £15,800 GBP|Low: £15,073 GBP|High: £17,235 GBP|Avg: £16,059 GBP|-3.1%
77 Diamonds
Retailer 2
November 6, 2026
Retailer 2£15,073 GBP
77 Diamonds£15,800 GBP

30 data points across 2 retailers

2 retailers£15,073 GBP to £15,800 GBP

A
Cheapest Retailer
-
£15,073 GBP
Most Expensive
B+
77 Diamonds
CUSCPPJRE4DYR · Nov 6
£15,800 GBP
View
1 more retailer has this diamond
Prices start from £15,073 GBPSave up to £727 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
3.09ct Cushion
£15,073 GBP