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Round|Natural|GIA

1.00ct I SI2 Round Natural Diamond

VG • I/SI2 • GIA 5446385330

Certificate GIA 5446385330

Diamond specifications and retailer prices

From £1,259 GBP
As of October 31, 2026
Save £2,366 GBP (65%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,625 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 5446385330. Listed at 19 retailers as of October 31, 2026, with prices from £1,259 to £3,625, a £2,366 spread on the same certified stone. NZ Jewellers lists it at £3,625. 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
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle40°
OriginNatural
Grading LabGIA
CertificateGIA 5446385330
Dimensions6.28 × 6.24 × 3.99 mm
L/W Ratio1.01
Top View
6.28 mm6.24 mm1.00 ctI / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5446385330
Side View
Table 55.0%Crown 38°Girdle: MED-THKPavilion 40°Culet: NoneDepth 63.8%

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: £1,761 GBP|Low: £1,204 GBP|High: £3,074 GBP|Avg: £1,804 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8£1,259 GBP
Retailer 9£1,265 GBP
Retailer 3£1,425 GBP
Retailer 10£1,600 GBP
Retailer 7£1,628 GBP
Retailer 1£1,761 GBP
Retailer 2£1,814 GBP
Retailer 4£1,873 GBP
Retailer 6£2,135 GBP
Retailer 5£3,029 GBP

44 data points across 10 retailers

19 retailers£1,259 GBP to £3,625 GBP

A
Cheapest Retailer
-
£1,259 GBP
A
Retailer 2
-
£1,265 GBP
View
B+
Retailer 3
-
£1,425 GBP
View
B+
Retailer 4
-
£1,534 GBP
View
B+
Retailer 5
-
£1,600 GBP
View
Final sale: no returns
A
Retailer 6
-
£1,628 GBP
View
B+
Retailer 7
-
£1,675 GBP
View
Retailer 8
-
£1,732 GBP
View
Price last confirmed 109 days ago
Retailer 9
-
£1,734 GBP
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£1,734 GBP
View
B+
Retailer 11
-
£1,761 GBP
View
B+
Retailer 12
-
£1,814 GBP
View
B+
Retailer 13
-
£1,837 GBP
View
B+
Retailer 14
-
£1,873 GBP
View
B+
Retailer 15
-
£2,001 GBP
View
B+
Retailer 16
-
£2,135 GBP
View
B
Retailer 17
-
£2,588 GBP
View
B
Retailer 18
-
£3,029 GBP
View
Most Expensive
C
NZ Jewellers
f6636306-9ff9-4a72-ade3-2fcc32f6cb24 · Nov 5
£3,625 GBP
$4,879 USD
View
18 more retailers have this diamond
Prices start from £1,259 GBPSave up to £2,366 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
£1,259 GBP