Round|Natural|GIA

1.01ct G SI2 Round Natural Diamond

ID • G/SI2 • GIA 397

Certificate GIA 397

Diamond specifications and retailer prices

From £1,331 GBP
As of November 6, 2026
Save £2,778 GBP (68%) vs most expensive(unlock to see where)
33 retailers carry this diamond
Most expensive: £4,109 GBP at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct 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. Listed at 33 retailers as of November 2, 2026, with prices from £1,331 to £4,109, a £2,778 spread on the same certified stone. NZ Jewellers lists it at £4,109. 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

1.01
Carat
G
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 397
Dimensions6.37 × 6.41 × 3.99 mm
L/W Ratio1.01
Top View
6.37 mm6.41 mm1.01 ctG / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 397
Side View
Table 58.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £4,109 GBP|Low: £1,329 GBP|High: £4,109 GBP|Avg: £1,869 GBP|+28.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2£1,331 GBP
Retailer 8£1,450 GBP
Retailer 4£1,531 GBP
Retailer 5£1,869 GBP
Retailer 7£1,909 GBP
Retailer 9£1,959 GBP
Retailer 6£1,965 GBP
Retailer 3£2,041 GBP
NZ Jewellers£4,109 GBP

34 data points across 9 retailers

33 retailers£1,331 GBP to £4,109 GBP

A
Cheapest Retailer
-
£1,331 GBP
Retailer 2
-
£1,338 GBP
View
Price last confirmed 28 days ago
Retailer 3
-
£1,338 GBP
View
Price last confirmed 23 days ago
Retailer 4
-
£1,345 GBP
View
Price last confirmed 29 days ago
Retailer 5
-
£1,450 GBP
View
Price last confirmed 12 days ago
Retailer 6
-
£1,450 GBP
View
Price last confirmed 15 days ago
Retailer 7
-
£1,450 GBP
View
Price last confirmed 8 days ago
A
Retailer 8
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£1,450 GBP
View
A
Retailer 9
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£1,517 GBP
View
Retailer 10
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£1,517 GBP
View
Price last confirmed 15 days ago
Retailer 11
-
£1,527 GBP
View
Price last confirmed 55 days ago
Retailer 12
-
£1,527 GBP
View
Price last confirmed 60 days ago
A
Retailer 13
-
£1,531 GBP
View
A
Retailer 14
-
£1,568 GBP
View
Retailer 15
-
£1,589 GBP
View
Price last confirmed 8 days ago
A
Retailer 16
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£1,655 GBP
View
A
Retailer 17
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£1,674 GBP
View
Retailer 18
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£1,674 GBP
View
Price last confirmed 14 days ago
A
Retailer 19
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£1,731 GBP
View
Retailer 20
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£1,762 GBP
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Price last confirmed 59 days ago
Retailer 21
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£1,762 GBP
View
Price last confirmed 56 days ago
A
Retailer 22
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£1,869 GBP
View
A
Retailer 23
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£1,909 GBP
View
B+
Retailer 24
-
£1,965 GBP
View
B+
Retailer 25
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£2,041 GBP
View
Retailer 26
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£3,193 GBP
View
Price last confirmed 55 days ago
Retailer 27
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£3,265 GBP
View
Price last confirmed 28 days ago
Retailer 28
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£3,265 GBP
View
Price last confirmed 23 days ago
Retailer 29
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£3,281 GBP
View
Price last confirmed 34 days ago
B
Retailer 30
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£3,460 GBP
View
B
Retailer 31
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£3,538 GBP
View
Retailer 32
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£3,538 GBP
View
Price last confirmed 14 days ago
Most Expensive
B
NZ Jewellers
4d9d9a71-8e52-44bc-81bf-1cf927de557f · Nov 2
£4,109 GBP
$5,530 USD
View
32 more retailers have this diamond
Prices start from £1,331 GBPSave up to £2,778 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
1.01ct Round
£1,331 GBP