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Round|Natural|GIA

1.00ct F SI2 Round Natural Diamond

VG • F/SI2 • GIA 1439308520

Certificate GIA 1439308520

Diamond specifications and retailer prices

From £1,576 GBP
As of November 6, 2026
Save £2,997 GBP (66%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,573 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 F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 1439308520. Listed at 18 retailers as of November 5, 2026, with prices from £1,576 to £4,573, a £2,997 spread on the same certified stone. NZ Jewellers lists it at £4,573. 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
F
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle42°
OriginNatural
Grading LabGIA
CertificateGIA 1439308520
Dimensions6.33 × 6.23 × 4.02 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Crystal, Knot, Cloud, Needle, Indented Natural, Natural
Top View
6.33 mm6.23 mm1.00 ctF / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1439308520
Side View
Table 60.0%Crown 35°Girdle: THN-THKPavilion 42°Culet: NoneDepth 63.9%

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: Nov 6
Current: £1,576 GBP|Low: £1,524 GBP|High: £3,702 GBP|Avg: £2,221 GBP|-2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1£1,576 GBP
Retailer 6£1,606 GBP
Retailer 8£1,928 GBP
Retailer 7£2,019 GBP
Retailer 2£2,229 GBP
Retailer 9£2,271 GBP
Retailer 3£2,302 GBP
Retailer 5£2,471 GBP
Retailer 4£3,648 GBP

42 data points across 9 retailers

18 retailers£1,576 GBP to £4,573 GBP

A
Cheapest Retailer
-
£1,576 GBP
A
Retailer 2
-
£1,606 GBP
View
B+
Retailer 3
-
£1,884 GBP
View
B+
Retailer 4
-
£1,928 GBP
View
B+
Retailer 5
-
£2,019 GBP
View
Final sale: no returns
Retailer 6
-
£2,062 GBP
View
Price last confirmed 109 days ago
Retailer 7
-
£2,188 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£2,188 GBP
View
B+
Retailer 9
-
£2,229 GBP
View
B+
Retailer 10
-
£2,271 GBP
View
B+
Retailer 11
-
£2,294 GBP
View
B+
Retailer 12
-
£2,302 GBP
View
B+
Retailer 13
-
£2,471 GBP
View
B
Retailer 14
-
£2,524 GBP
View
B
Retailer 15
-
£3,151 GBP
View
B
Retailer 16
-
£3,648 GBP
View
B
Retailer 17
-
£3,893 GBP
View
Most Expensive
C
NZ Jewellers
1efb18db-5499-4377-abda-6f3a6570f74b · Nov 5
£4,573 GBP
$6,121 USD
View
17 more retailers have this diamond
Prices start from £1,576 GBPSave up to £2,997 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
£1,576 GBP