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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 £1,491 GBP
As of November 6, 2026
Save £2,528 GBP (63%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £4,019 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 £1,491 to £4,019, a £2,528 spread on the same certified stone. NZ Jewellers lists it at £4,019. 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: £4,019 GBP|Low: £1,482 GBP|High: £4,019 GBP|Avg: £2,206 GBP
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
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Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
November 6, 2026
Retailer 6£1,491 GBP
Retailer 19£1,570 GBP
Retailer 3£1,706 GBP
Retailer 16£1,722 GBP
Retailer 20£1,839 GBP
Retailer 2£1,870 GBP
Retailer 7£1,901 GBP
Retailer 10£1,909 GBP
Retailer 9£1,922 GBP
Retailer 11£1,922 GBP
Retailer 14£1,972 GBP
Retailer 22£2,022 GBP
Retailer 8£2,027 GBP
Retailer 21£2,077 GBP
Retailer 13£2,105 GBP
Retailer 12£2,113 GBP
Retailer 15£2,218 GBP
Retailer 4£2,328 GBP
Retailer 23£2,346 GBP
Retailer 17£2,958 GBP
Retailer 18£3,041 GBP
Retailer 5£3,358 GBP
NZ Jewellers£4,019 GBP

22 data points across 23 retailers

24 retailers£1,491 GBP to £4,019 GBP

A
Cheapest Retailer
-
£1,491 GBP
A
Retailer 2
-
£1,570 GBP
View
A
Retailer 3
-
£1,706 GBP
View
A
Retailer 4
-
£1,722 GBP
View
A
Retailer 5
-
£1,839 GBP
View
A
Retailer 6
-
£1,870 GBP
View
Final sale: no returns
A
Retailer 7
-
£1,901 GBP
View
A
Retailer 8
-
£1,909 GBP
View
A
Retailer 9
-
£1,922 GBP
View
Retailer 10
-
£1,922 GBP
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£1,972 GBP
View
A
Retailer 12
-
£2,022 GBP
View
B+
Retailer 13
-
£2,027 GBP
View
B+
Retailer 14
-
£2,077 GBP
View
B+
Retailer 15
-
£2,105 GBP
View
B+
Retailer 16
-
£2,113 GBP
View
B+
Retailer 17
-
£2,218 GBP
View
Retailer 18
-
£2,224 GBP
View
Price last confirmed 30 days ago
B+
Retailer 19
-
£2,328 GBP
View
B+
Retailer 20
-
£2,346 GBP
View
B
Retailer 21
-
£2,958 GBP
View
B
Retailer 22
-
£3,041 GBP
View
B
Retailer 23
-
£3,358 GBP
View
Most Expensive
B
NZ Jewellers
5cb3b936-66a2-46ea-adc4-2528a6c27ea0 · Nov 5
£4,019 GBP
$5,380 USD
View
23 more retailers have this diamond
Prices start from £1,491 GBPSave up to £2,528 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
£1,491 GBP