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Round|Natural|GIA

3.05ct K SI1 Round Natural Diamond

GD • K/SI1 • GIA 5231781775

Certificate GIA 5231781775

Diamond specifications and retailer prices

From £11,239 GBP
As of November 4, 2026
Save £4,598 GBP (29%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £15,838 GBP at Ritani · As of November 4, 2026
View at Ritani

About this 3.05ct natural round diamond

This 3.05ct natural round sits in the three to five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 5231781775. Listed at 6 retailers as of November 4, 2026, with prices from £11,239 to £15,838, a £4,598 spread on the same certified stone. Ritani lists it at £15,838. 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

3.05
Carat
K
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceStrong
Crown angle36°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 5231781775
Dimensions9.05 × 9.27 × 5.78 mm
L/W Ratio1.02
Top View
9.05 mm9.27 mm3.05 ctK / SI1
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceStrong
CertificateGIA 5231781775
Side View
Table 61.0%Crown 36°Girdle: STK-THKPavilion 41.8°Culet: Very SmallDepth 63.1%

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: £13,087 GBP|Low: £11,107 GBP|High: £15,838 GBP|Avg: £13,313 GBP|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Ritani
November 6, 2026
Retailer 5£11,239 GBP
Retailer 4£11,766 GBP
Retailer 3£12,523 GBP
Retailer 1£13,087 GBP
Retailer 2£14,870 GBP
Ritani£15,838 GBP

41 data points across 6 retailers

6 retailers£11,239 GBP to £15,838 GBP

B+
Cheapest Retailer
-
£11,239 GBP
B+
Retailer 2
-
£11,766 GBP
View
B+
Retailer 3
-
£12,523 GBP
View
B+
Retailer 4
-
£13,087 GBP
View
B+
Retailer 5
-
£14,870 GBP
View
Most Expensive
B
Ritani
D-5PY649W4GF · Nov 4
£15,838 GBP
$21,316 USD
View
5 more retailers have this diamond
Prices start from £11,239 GBPSave up to £4,598 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
£11,239 GBP