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Round|Natural|GIA

3.05ct I SI2 Round Natural Diamond

ID • I/SI2 • GIA 77

Certificate GIA 77

Diamond specifications and retailer prices

From £25,476 GBP
As of November 4, 2026
Save £4,141 GBP (14%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £29,617 GBP at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 3.05ct natural round diamond

This 3.05ct natural round sits in the three to five carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 3 retailers as of November 4, 2026, with prices from £25,476 to £29,617, a £4,141 spread on the same certified stone. Blue Nile lists it at £29,617. 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

3.05
Carat
I
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 77
Dimensions9.31 × 9.36 × 5.72 mm
L/W Ratio1.01
Top View
9.31 mm9.36 mm3.05 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 77
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.3%

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 4
Current: £29,617 GBP|Low: £25,476 GBP|High: £29,617 GBP|Avg: £26,915 GBP
Blue Nile
Retailer 2
Retailer 3
September 26, 2026
Retailer 2£25,476 GBP
Retailer 3£27,003 GBP
Blue Nile£29,617 GBP

2 data points across 3 retailers

3 retailers£25,476 GBP to £29,617 GBP

B+
Cheapest Retailer
-
£25,476 GBP
B
Retailer 2
-
£27,003 GBP
View
Most Expensive
B
Blue Nile
14974596 · Nov 5
£29,617 GBP
$39,862 USD
View
2 more retailers have this diamond
Prices start from £25,476 GBPSave up to £4,141 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+
3.05ct Round
£25,476 GBP