CaratHunter
Plans
Cushion|Natural|GIA

3.00ct H SI2 Cushion Natural Diamond

EX • H/SI2 • GIA 127

Certificate GIA 127

Diamond specifications and retailer prices

From £21,778 GBP
As of November 6, 2026
Save £3,718 GBP (15%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £25,496 GBP at Blue Nile · As of November 5, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 3 retailers as of November 5, 2026, with prices from £21,778 to £25,496, a £3,718 spread on the same certified stone. Blue Nile lists it at £25,496. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.00
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 127
Dimensions8.82 × 7.85 × 5.46 mm
L/W Ratio1.12
Top View
8.82 mm7.85 mm3.00 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 127
Side View
Table 62.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 69.6%

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: £25,496 GBP|Low: £21,778 GBP|High: £25,496 GBP|Avg: £23,206 GBP
Blue Nile
Retailer 2
Retailer 3
September 26, 2026
Retailer 2£21,778 GBP
Retailer 3£23,488 GBP
Blue Nile£25,496 GBP

2 data points across 3 retailers

3 retailers£21,778 GBP to £25,496 GBP

B+
Cheapest Retailer
-
£21,778 GBP
B+
Retailer 2
-
£23,488 GBP
View
Most Expensive
B
Blue Nile
15760210 · Nov 5
£25,496 GBP
$34,126 USD
View
2 more retailers have this diamond
Prices start from £21,778 GBPSave up to £3,718 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+
3.00ct Cushion
£21,778 GBP