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Round|Natural|GIA

1.00ct M I1 Round Natural Diamond

GD • M/I1 • GIA 1478188764

Certificate GIA 1478188764

Diamond specifications and retailer prices

From £684 GBP
As of November 4, 2026
Save £488 GBP (42%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,173 GBP at Yorxs · As of November 5, 2026
View at Yorxs

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded M colour (faint-tinted) and I1 clarity (included), with a standard cut grade and certified by GIA 1478188764. Listed at 3 retailers as of November 4, 2026, with prices from £684 to £1,173, a £488 spread on the same certified stone. Yorxs lists it at £1,173. 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

1.00
Carat
M
Colour
I1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle37°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1478188764
Dimensions6.20 × 6.27 × 4.05 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Key to symbols
Twinning Wisp, Cavity, Feather, Crystal, Indented Natural, Needle, Natural
Top View
6.20 mm6.27 mm1.00 ctM / I1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1478188764
Side View
Table 58.0%Crown 37°GirdlePavilion 41.2°Culet: NoneDepth 65.0%

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: £684 GBP|Low: £675 GBP|High: £1,187 GBP|Avg: £965 GBP|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Yorxs
November 5, 2026
Retailer 1£684 GBP
Retailer 2£874 GBP
Retailer 3£968 GBP
Retailer 4£1,085 GBP
Yorxs£1,173 GBP

19 data points across 5 retailers

3 retailers£684 GBP to £1,173 GBP

B+
Cheapest Retailer
-
£684 GBP
B
Retailer 2
-
£874 GBP
View
Most Expensive
C
Yorxs
596850276 · Nov 5
£1,173 GBP
€1,503 EUR
View
2 more retailers have this diamond
Prices start from £684 GBPSave up to £488 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+
1.00ct Round
£684 GBP