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Round|Natural|GIA

1.00ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 7521931738

Certificate GIA 7521931738

Diamond specifications and retailer prices

From £1,483 GBP
As of November 6, 2026
Save £2,514 GBP (63%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £3,997 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7521931738. Listed at 24 retailers as of November 5, 2026, with prices from £1,483 to £3,997, a £2,514 spread on the same certified stone. NZ Jewellers lists it at £3,997. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7521931738
Dimensions6.35 × 6.31 × 3.99 mm
L/W Ratio1.01
Star length55%
Lower girdle75%
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Crystal, Cloud, Feather, Needle, Indented Natural, Natural
Top View
6.35 mm6.31 mm1.00 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7521931738
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.0%

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: £3,997 GBP|Low: £1,474 GBP|High: £3,997 GBP|Avg: £2,194 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
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Retailer 11
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Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
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Retailer 22
Retailer 23
November 6, 2026
Retailer 3£1,483 GBP
Retailer 13£1,561 GBP
Retailer 21£1,697 GBP
Retailer 15£1,713 GBP
Retailer 12£1,765 GBP
Retailer 17£1,829 GBP
Retailer 4£1,891 GBP
Retailer 8£1,898 GBP
Retailer 6£1,912 GBP
Retailer 9£1,912 GBP
Retailer 11£1,961 GBP
Retailer 7£2,000 GBP
Retailer 19£2,011 GBP
Retailer 5£2,016 GBP
Retailer 18£2,066 GBP
Retailer 10£2,101 GBP
Retailer 14£2,206 GBP
Retailer 22£2,315 GBP
Retailer 20£2,333 GBP
Retailer 16£2,794 GBP
Retailer 2£3,024 GBP
Retailer 23£3,340 GBP
NZ Jewellers£3,997 GBP

23 data points across 23 retailers

24 retailers£1,483 GBP to £3,997 GBP

A
Cheapest Retailer
-
£1,483 GBP
A
Retailer 2
-
£1,561 GBP
View
A
Retailer 3
-
£1,697 GBP
View
A
Retailer 4
-
£1,713 GBP
View
A
Retailer 5
-
£1,765 GBP
View
Final sale: no returns
A
Retailer 6
-
£1,829 GBP
View
A
Retailer 7
-
£1,891 GBP
View
A
Retailer 8
-
£1,898 GBP
View
A
Retailer 9
-
£1,912 GBP
View
Retailer 10
-
£1,912 GBP
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£1,961 GBP
View
B+
Retailer 12
-
£2,000 GBP
View
A
Retailer 13
-
£2,011 GBP
View
B+
Retailer 14
-
£2,016 GBP
View
B+
Retailer 15
-
£2,066 GBP
View
B+
Retailer 16
-
£2,101 GBP
View
B+
Retailer 17
-
£2,206 GBP
View
Retailer 18
-
£2,212 GBP
View
Price last confirmed 30 days ago
B+
Retailer 19
-
£2,315 GBP
View
B+
Retailer 20
-
£2,333 GBP
View
B+
Retailer 21
-
£2,794 GBP
View
B+
Retailer 22
-
£3,024 GBP
View
B
Retailer 23
-
£3,340 GBP
View
Most Expensive
B
NZ Jewellers
5cb3b936-66a2-46ea-adc4-2528a6c27ea0 · Nov 5
£3,997 GBP
$5,380 USD
View
23 more retailers have this diamond
Prices start from £1,483 GBPSave up to £2,514 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
£1,483 GBP