Round|Natural|GIA

1.00ct G SI1 Round Natural Diamond

VG • G/SI1 • GIA 2245003721

Certificate GIA 2245003721

Diamond specifications and retailer prices

From £1,970 GBP

As of November 6, 2026

27 retailers carry this diamond

Most expensive: £4,412 GBP at NZ Jewellers · As of September 27, 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 very-good cut grade and certified by GIA 2245003721. Listed at 27 retailers as of November 6, 2026. 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

Colour

SI1

Clarity

Very Good

Cut

Specifications

CutVery Good

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36.5°

Pavilion angle41°

OriginNatural

Grading LabGIA

CertificateGIA 2245003721

Dimensions6.25 × 3.97 × 3.97 mm

L/W Ratio1.57

Culet sizeNone

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutVery Good

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 2245003721

Side View

Caratlytics Score

How it works →

B+

Very Good

Strong quality and value balance

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6

Current: £3,717 GBP|Low: £1,520 GBP|High: £6,724 GBP|Avg: £2,261 GBP|-0.7%

Retailer 1

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

October 29, 2026

Retailer 7£1,587 GBP

Retailer 9£1,639 GBP

Retailer 8£1,694 GBP

Retailer 4£1,727 GBP

Retailer 5£1,761 GBP

Retailer 6£1,765 GBP

Retailer 15£1,894 GBP

Retailer 11£1,922 GBP

Retailer 16£1,928 GBP

Retailer 12£2,041 GBP

Retailer 2£2,189 GBP

Retailer 18£2,189 GBP

Retailer 14£2,229 GBP

Retailer 13£2,264 GBP

Retailer 10£2,365 GBP

Retailer 3£2,466 GBP

Retailer 19£2,569 GBP

Retailer 17£2,584 GBP

Retailer 1£3,717 GBP

25 data points across 19 retailers

27 retailers

Retailer 1

£1,587 GBP

Price last confirmed 7 days ago

Retailer 2

£1,639 GBP

View

Price last confirmed 26 days ago

Retailer 3

£1,688 GBP

View

Price last confirmed 9 days ago

Retailer 4

£1,694 GBP

View

Price last confirmed 11 days ago

Retailer 5

£1,727 GBP

View

Price last confirmed 9 days ago

Retailer 6

£1,761 GBP

View

Price last confirmed 10 days ago

Retailer 7

£1,845 GBP

View

Price last confirmed 30 days ago

Retailer 8

£1,894 GBP

View

Price last confirmed 9 days ago

Retailer 9

£1,922 GBP

View

Price last confirmed 29 days ago

Retailer 10

£1,928 GBP

View

Price last confirmed 9 days ago

B+

Retailer 11

£1,970 GBP

View

Retailer 12

£2,041 GBP

View

Price last confirmed 9 days ago

Retailer 13

£2,111 GBP

View

Price last confirmed 25 days ago

Retailer 14

£2,111 GBP

View

Price last confirmed 28 days ago

Retailer 15

£2,186 GBP

View

Price last confirmed 26 days ago

Retailer 16

£2,189 GBP

View

Price last confirmed 9 days ago

Retailer 17

£2,189 GBP

View

Price last confirmed 11 days ago

Retailer 18

£2,192 GBP

View

Price last confirmed 38 days ago

Retailer 19

£2,229 GBP

View

Price last confirmed 9 days ago

Retailer 20

£2,264 GBP

View

Price last confirmed 9 days ago

Retailer 21

£2,365 GBP

View

Price last confirmed 30 days ago

Retailer 22

£2,435 GBP

View

Price last confirmed 28 days ago

Retailer 23

£2,466 GBP

View

Price last confirmed 11 days ago

Retailer 24

£2,569 GBP

View

Price last confirmed 11 days ago

Retailer 25

£2,584 GBP

View

Price last confirmed 8 days ago

Retailer 26

£3,717 GBP

View

Price last confirmed 8 days ago

Most Expensive

NZ Jewellers

f72310fd-152a-4fd3-993c-35f3170d8946 · Sep 27

£4,412 GBP

$5,906 USD

View

Price last confirmed 40 days ago

26 more retailers have this diamond

Prices start from £1,970 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.

Where to buy this spec

See every retailer carrying 1ct G SI1 round natural

Ranked by inventory count, with return policy, certs, and trust signals.

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