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Round|Natural|GIA

1.00ct G SI2 Round Natural Diamond

VG • G/SI2 • GIA 2566302813

Certificate GIA 2566302813

Diamond specifications and retailer prices

From £1,112 GBP
As of November 6, 2026
Save £2,521 GBP (69%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,633 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 2566302813. Listed at 20 retailers as of November 5, 2026, with prices from £1,112 to £3,633, a £2,521 spread on the same certified stone. NZ Jewellers lists it at £3,633. 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.5°
Pavilion angle42.2°
OriginNatural
Grading LabGIA
CertificateGIA 2566302813
Dimensions6.29 × 6.23 × 4.02 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.29 mm6.23 mm1.00 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566302813
Side View
Table 61.0%Crown 34.5°Girdle: STK-THKPavilion 42.2°Culet: NDepth 64.2%

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: £3,633 GBP|Low: £1,112 GBP|High: £3,633 GBP|Avg: £1,692 GBP|+14.1%
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
Retailer 19
November 6, 2026
Retailer 8£1,112 GBP
Retailer 9£1,154 GBP
Retailer 4£1,286 GBP
Retailer 16£1,347 GBP
Retailer 11£1,352 GBP
Retailer 5£1,358 GBP
Retailer 2£1,366 GBP
Retailer 7£1,375 GBP
Retailer 6£1,490 GBP
Retailer 10£1,550 GBP
Retailer 12£1,551 GBP
Retailer 19£1,558 GBP
Retailer 13£1,614 GBP
Retailer 3£1,719 GBP
Retailer 15£1,722 GBP
Retailer 14£1,912 GBP
Retailer 18£2,158 GBP
Retailer 17£2,602 GBP
NZ Jewellers£3,633 GBP

26 data points across 19 retailers

20 retailers£1,112 GBP to £3,633 GBP

A
Cheapest Retailer
-
£1,112 GBP
Retailer 2
-
£1,154 GBP
View
Price last confirmed 17 days ago
A
Retailer 3
-
£1,286 GBP
View
Retailer 4
-
£1,297 GBP
View
Price last confirmed 20 days ago
A
Retailer 5
-
£1,347 GBP
View
Retailer 6
-
£1,352 GBP
View
Price last confirmed 19 days ago
A
Retailer 7
-
£1,358 GBP
View
A
Retailer 8
-
£1,366 GBP
View
B+
Retailer 9
-
£1,375 GBP
View
Final sale: no returns
A
Retailer 10
-
£1,490 GBP
View
Retailer 11
-
£1,550 GBP
View
Price last confirmed 16 days ago
A
Retailer 12
-
£1,551 GBP
View
A
Retailer 13
-
£1,558 GBP
View
A
Retailer 14
-
£1,614 GBP
View
A
Retailer 15
-
£1,719 GBP
View
A
Retailer 16
-
£1,722 GBP
View
B+
Retailer 17
-
£1,912 GBP
View
B+
Retailer 18
-
£2,158 GBP
View
B
Retailer 19
-
£2,602 GBP
View
Most Expensive
C
NZ Jewellers
aea2bd82-e878-478a-9d37-d6a4df82a19c · Nov 5
£3,633 GBP
$4,890 USD
View
19 more retailers have this diamond
Prices start from £1,112 GBPSave up to £2,521 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
£1,112 GBP