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Round|Natural|GIA

1.00ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 6505785799

Certificate GIA 6505785799

Diamond specifications and retailer prices

From £1,122 GBP
As of November 5, 2026
Save £2,443 GBP (69%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,565 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 top-tier cut grade and certified by GIA 6505785799. Listed at 19 retailers as of November 5, 2026, with prices from £1,122 to £3,565, a £2,443 spread on the same certified stone. NZ Jewellers lists it at £3,565. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6505785799
Dimensions6.50 × 6.44 × 3.87 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.50 mm6.44 mm1.00 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6505785799
Side View
Table 61.0%Crown 33°Girdle: MED-STKPavilion 41°Culet: NoneDepth 59.9%

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 5
Current: £3,565 GBP|Low: £1,122 GBP|High: £3,565 GBP|Avg: £1,771 GBP|+13.0%
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
November 6, 2026
Retailer 15£1,122 GBP
Retailer 14£1,175 GBP
Retailer 2£1,340 GBP
Retailer 4£1,349 GBP
Retailer 8£1,427 GBP
Retailer 3£1,461 GBP
Retailer 12£1,464 GBP
Retailer 7£1,510 GBP
Retailer 16£1,521 GBP
Retailer 5£1,529 GBP
Retailer 9£1,554 GBP
Retailer 10£1,578 GBP
Retailer 13£1,687 GBP
Retailer 11£1,985 GBP
Retailer 6£2,644 GBP
NZ Jewellers£3,565 GBP

26 data points across 16 retailers

19 retailers£1,122 GBP to £3,565 GBP

A
Cheapest Retailer
-
£1,122 GBP
A
Retailer 2
-
£1,175 GBP
View
A
Retailer 3
-
£1,340 GBP
View
A
Retailer 4
-
£1,349 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,427 GBP
View
A
Retailer 6
-
£1,443 GBP
View
A
Retailer 7
-
£1,446 GBP
View
A
Retailer 8
-
£1,461 GBP
View
A
Retailer 9
-
£1,464 GBP
View
Retailer 10
-
£1,510 GBP
View
Price last confirmed 8 days ago
A
Retailer 11
-
£1,521 GBP
View
A
Retailer 12
-
£1,529 GBP
View
A
Retailer 13
-
£1,554 GBP
View
A
Retailer 14
-
£1,578 GBP
View
A
Retailer 15
-
£1,687 GBP
View
A
Retailer 16
-
£1,985 GBP
View
B
Retailer 17
-
£2,644 GBP
View
B
Retailer 18
-
£3,025 GBP
View
Most Expensive
B
NZ Jewellers
aae52e83-00e0-46ac-91c0-bee7bc8afd8e · Nov 5
£3,565 GBP
$4,798 USD
View
18 more retailers have this diamond
Prices start from £1,122 GBPSave up to £2,443 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
£1,122 GBP