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Round|Natural|GIA

1.00ct F SI2 Round Natural Diamond

VG • F/SI2 • GIA 6421088086

Certificate GIA 6421088086

Diamond specifications and retailer prices

From £1,243 GBP
As of November 6, 2026
Save £2,247 GBP (64%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,490 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 6421088086. Listed at 18 retailers as of November 5, 2026, with prices from £1,243 to £3,490, a £2,247 spread on the same certified stone. NZ Jewellers lists it at £3,490. 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
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6421088086
Dimensions6.30 × 6.21 × 4.01 mm
L/W Ratio1.01
Top View
6.30 mm6.21 mm1.00 ctF / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6421088086
Side View
Table 56.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 64.1%

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: £3,490 GBP|Low: £1,224 GBP|High: £3,565 GBP|Avg: £1,831 GBP|-2.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 15£1,243 GBP
Retailer 16£1,340 GBP
Retailer 4£1,508 GBP
Retailer 2£1,509 GBP
Retailer 7£1,541 GBP
Retailer 8£1,581 GBP
Retailer 6£1,659 GBP
Retailer 9£1,669 GBP
Retailer 18£1,669 GBP
Retailer 10£1,683 GBP
Retailer 11£1,724 GBP
Retailer 5£1,746 GBP
Retailer 17£1,773 GBP
Retailer 12£1,803 GBP
Retailer 3£1,926 GBP
Retailer 13£2,069 GBP
Retailer 14£2,924 GBP
NZ Jewellers£3,490 GBP

31 data points across 18 retailers

18 retailers£1,243 GBP to £3,490 GBP

A
Cheapest Retailer
-
£1,243 GBP
A
Retailer 2
-
£1,340 GBP
View
A
Retailer 3
-
£1,508 GBP
View
A
Retailer 4
-
£1,509 GBP
View
B+
Retailer 5
-
£1,541 GBP
View
Final sale: no returns
A
Retailer 6
-
£1,581 GBP
View
B+
Retailer 7
-
£1,659 GBP
View
Retailer 8
-
£1,669 GBP
View
Price last confirmed 8 days ago
A
Retailer 9
-
£1,669 GBP
View
A
Retailer 10
-
£1,724 GBP
View
B+
Retailer 11
-
£1,746 GBP
View
A
Retailer 12
-
£1,773 GBP
View
A
Retailer 13
-
£1,803 GBP
View
B+
Retailer 14
-
£1,926 GBP
View
B+
Retailer 15
-
£2,069 GBP
View
B
Retailer 16
-
£2,924 GBP
View
B
Retailer 17
-
£3,415 GBP
View
Most Expensive
B
NZ Jewellers
bed3291e-ec80-4058-af36-13a7973dc738 · Nov 5
£3,490 GBP
$4,671 USD
View
17 more retailers have this diamond
Prices start from £1,243 GBPSave up to £2,247 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
£1,243 GBP