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Cushion|Natural|GIA

3.00ct H SI2 Cushion Natural Diamond

VG • H/SI2 • GIA 6545978868

Certificate GIA 6545978868

Diamond specifications and retailer prices

From £16,941 GBP
As of November 6, 2026
Save £3,338 GBP (16%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £20,279 GBP at Blue Nile · As of November 3, 2026
View at Blue Nile

About this 3ct natural cushion diamond

This 3ct natural cushion sits in the three to five carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6545978868. Listed at 3 retailers as of November 3, 2026, with prices from £16,941 to £20,279, a £3,338 spread on the same certified stone. Blue Nile lists it at £20,279. 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

3.00
Carat
H
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30°
Pavilion angle55.2°
OriginNatural
Grading LabGIA
CertificateGIA 6545978868
Dimensions9.59 × 7.73 × 5.27 mm
L/W Ratio1.24
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Pinpoint
Top View
9.59 mm7.73 mm3.00 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545978868
Side View
Table 70.0%Crown 30°Girdle: STK-VTKPavilion 55.2°Culet: NDepth 68.2%

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: £20,279 GBP|Low: £16,941 GBP|High: £21,512 GBP|Avg: £19,983 GBP|-5.7%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2£16,941 GBP
Retailer 3£18,828 GBP
Blue Nile£20,279 GBP
Retailer 4£21,213 GBP

42 data points across 4 retailers

3 retailers£16,941 GBP to £20,279 GBP

A
Cheapest Retailer
-
£16,941 GBP
B+
Retailer 2
-
£18,828 GBP
View
Most Expensive
B+
Blue Nile
28820832 · Nov 3
£20,279 GBP
$27,143 USD
View
2 more retailers have this diamond
Prices start from £16,941 GBPSave up to £3,338 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
3.00ct Cushion
£16,941 GBP