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Round|Natural|GIA

1.00ct G SI2 Round Natural Diamond

VG • G/SI2 • GIA 6415951080

Certificate GIA 6415951080

Diamond specifications and retailer prices

From £1,376 GBP
As of November 5, 2026
Save £2,611 GBP (65%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,987 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 6415951080. Listed at 19 retailers as of November 5, 2026, with prices from £1,376 to £3,987, a £2,611 spread on the same certified stone. NZ Jewellers lists it at £3,987. 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
G
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6415951080
Dimensions6.33 × 6.25 × 4.00 mm
L/W Ratio1.01
Top View
6.33 mm6.25 mm1.00 ctG / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6415951080
Side View
Table 60.0%Crown 35°Girdle: STK-THKPavilion 41.6°Culet: NoneDepth 63.6%

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 5
Current: £1,749 GBP|Low: £1,376 GBP|High: £3,381 GBP|Avg: £1,979 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 3£1,376 GBP
Retailer 6£1,398 GBP
Retailer 8£1,723 GBP
Retailer 1£1,749 GBP
Retailer 9£1,760 GBP
Retailer 7£1,767 GBP
Retailer 2£2,006 GBP
Retailer 5£2,145 GBP
Retailer 4£3,332 GBP

28 data points across 9 retailers

19 retailers£1,376 GBP to £3,987 GBP

A
Cheapest Retailer
-
£1,376 GBP
A
Retailer 2
-
£1,398 GBP
View
B+
Retailer 3
-
£1,687 GBP
View
B+
Retailer 4
-
£1,723 GBP
View
A
Retailer 5
-
£1,749 GBP
View
B+
Retailer 6
-
£1,760 GBP
View
Final sale: no returns
A
Retailer 7
-
£1,767 GBP
View
Retailer 8
-
£1,811 GBP
View
Price last confirmed 109 days ago
B+
Retailer 9
-
£1,907 GBP
View
B+
Retailer 10
-
£1,938 GBP
View
B+
Retailer 11
-
£1,995 GBP
View
B+
Retailer 12
-
£2,006 GBP
View
B+
Retailer 13
-
£2,011 GBP
View
B+
Retailer 14
-
£2,145 GBP
View
B+
Retailer 15
-
£2,200 GBP
View
B
Retailer 16
-
£2,939 GBP
View
B
Retailer 17
-
£3,332 GBP
View
B
Retailer 18
-
£3,560 GBP
View
Most Expensive
B
NZ Jewellers
0bf9288f-91fa-4ac4-bf02-aa7357af922c · Nov 5
£3,987 GBP
$5,366 USD
View
18 more retailers have this diamond
Prices start from £1,376 GBPSave up to £2,611 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
£1,376 GBP