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Round|Natural|GIA

1.00ct I SI2 Round Natural Diamond

VG • I/SI2 • GIA 2454952844

Certificate GIA 2454952844

Diamond specifications and retailer prices

From £1,175 GBP
As of October 31, 2026
Save £2,218 GBP (65%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,393 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 2454952844. Listed at 18 retailers as of October 31, 2026, with prices from £1,175 to £3,393, a £2,218 spread on the same certified stone. NZ Jewellers lists it at £3,393. 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
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle38°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2454952844
Dimensions6.27 × 6.19 × 4.02 mm
L/W Ratio1.01
Top View
6.27 mm6.19 mm1.00 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2454952844
Side View
Table 58.0%Crown 38°Girdle: STK-THKPavilion 40.6°Culet: NoneDepth 64.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £1,645 GBP|Low: £1,123 GBP|High: £2,878 GBP|Avg: £1,680 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8£1,175 GBP
Retailer 9£1,179 GBP
Retailer 7£1,470 GBP
Retailer 11£1,498 GBP
Retailer 10£1,505 GBP
Retailer 1£1,645 GBP
Retailer 2£1,698 GBP
Retailer 4£1,753 GBP
Retailer 3£1,768 GBP
Retailer 6£1,991 GBP
Retailer 5£2,835 GBP

44 data points across 11 retailers

18 retailers£1,175 GBP to £3,393 GBP

A
Cheapest Retailer
-
£1,175 GBP
A
Retailer 2
-
£1,179 GBP
View
B+
Retailer 3
-
£1,435 GBP
View
A
Retailer 4
-
£1,470 GBP
View
B+
Retailer 5
-
£1,498 GBP
View
Final sale: no returns
B+
Retailer 6
-
£1,505 GBP
View
B+
Retailer 7
-
£1,578 GBP
View
B+
Retailer 8
-
£1,623 GBP
View
B+
Retailer 9
-
£1,645 GBP
View
B+
Retailer 10
-
£1,698 GBP
View
B+
Retailer 11
-
£1,726 GBP
View
B+
Retailer 12
-
£1,753 GBP
View
B+
Retailer 13
-
£1,768 GBP
View
B+
Retailer 14
-
£1,872 GBP
View
B+
Retailer 15
-
£1,991 GBP
View
B
Retailer 16
-
£2,588 GBP
View
B
Retailer 17
-
£2,835 GBP
View
Most Expensive
C
NZ Jewellers
eddb234b-b907-40a4-b894-285018945c26 · Nov 5
£3,393 GBP
$4,567 USD
View
17 more retailers have this diamond
Prices start from £1,175 GBPSave up to £2,218 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
1.00ct Round
£1,175 GBP