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Round|Natural|GIA

1.00ct F SI2 Round Natural Diamond

VG • F/SI2 • GIA 6401807782

Certificate GIA 6401807782

Diamond specifications and retailer prices

From £1,281 GBP
As of November 6, 2026
Save £2,310 GBP (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,591 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 6401807782. Listed at 19 retailers as of November 5, 2026, with prices from £1,281 to £3,591, a £2,310 spread on the same certified stone. NZ Jewellers lists it at £3,591. 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
FluorescenceNone
Crown angle37.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6401807782
Dimensions6.29 × 6.20 × 3.99 mm
L/W Ratio1.01
Top View
6.29 mm6.20 mm1.00 ctF / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6401807782
Side View
Table 58.0%Crown 37.5°Girdle: STK-THKPavilion 40.6°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: £1,552 GBP|Low: £1,182 GBP|High: £3,045 GBP|Avg: £1,757 GBP|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6£1,281 GBP
Retailer 4£1,367 GBP
Retailer 7£1,406 GBP
Retailer 8£1,436 GBP
Retailer 1£1,552 GBP
Retailer 9£1,628 GBP
Retailer 2£1,856 GBP
Retailer 5£2,096 GBP
Retailer 3£3,001 GBP

41 data points across 9 retailers

19 retailers£1,281 GBP to £3,591 GBP

A
Cheapest Retailer
-
£1,281 GBP
A
Retailer 2
-
£1,367 GBP
View
A
Retailer 3
-
£1,394 GBP
View
A
Retailer 4
-
£1,406 GBP
View
B+
Retailer 5
-
£1,436 GBP
View
Final sale: no returns
A
Retailer 6
-
£1,514 GBP
View
A
Retailer 7
-
£1,552 GBP
View
A
Retailer 8
-
£1,556 GBP
View
Retailer 9
-
£1,556 GBP
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£1,628 GBP
View
B+
Retailer 11
-
£1,795 GBP
View
B+
Retailer 12
-
£1,808 GBP
View
B+
Retailer 13
-
£1,808 GBP
View
B+
Retailer 14
-
£1,856 GBP
View
B+
Retailer 15
-
£1,868 GBP
View
B+
Retailer 16
-
£2,096 GBP
View
B
Retailer 17
-
£3,001 GBP
View
B
Retailer 18
-
£3,454 GBP
View
Most Expensive
B
NZ Jewellers
63dd54fe-2527-4189-b675-5507dba8d58d · Nov 5
£3,591 GBP
$4,807 USD
View
18 more retailers have this diamond
Prices start from £1,281 GBPSave up to £2,310 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
£1,281 GBP