Round|Natural|GIA

1.00ct G SI1 Round Natural Diamond

VG • G/SI1 • GIA 6551498300

Certificate GIA 6551498300

Diamond specifications and retailer prices

From £1,502 GBP
As of November 5, 2026
Save £912 GBP (38%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £6,687 GBP at MOH London · As of October 21, 2026
View at MOH London

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 6551498300. Listed at 27 retailers as of November 5, 2026, with a 61% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6551498300
Dimensions6.25 × 6.19 × 4.01 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.25 mm6.19 mm1.00 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551498300
Side View
Table 60.0%Crown 36°Girdle: STK-THKPavilion 41.6°Culet: NDepth 64.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £6,687 GBP|Low: £1,452 GBP|High: £6,687 GBP|Avg: £2,280 GBP|+87.1%
MOH London
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
Retailer 20
November 6, 2026
Retailer 20£1,502 GBP
Retailer 9£1,565 GBP
Retailer 4£1,616 GBP
Retailer 16£1,651 GBP
Retailer 7£1,667 GBP
Retailer 17£1,740 GBP
Retailer 14£1,783 GBP
Retailer 12£1,834 GBP
Retailer 8£1,856 GBP
Retailer 2£1,889 GBP
Retailer 11£2,016 GBP
Retailer 5£2,058 GBP
Retailer 6£2,058 GBP
Retailer 15£2,077 GBP
Retailer 13£2,125 GBP
Retailer 10£2,258 GBP
Retailer 19£2,291 GBP
Retailer 18£2,410 GBP
Retailer 3£2,415 GBP
MOH London£6,687 GBP

26 data points across 20 retailers

27 retailers£1,502 GBP to £2,415 GBP

A
Cheapest Retailer
-
£1,502 GBP
Retailer 2
-
£1,565 GBP
View
Price last confirmed 26 days ago
A
Retailer 3
-
£1,616 GBP
View
A
Retailer 4
-
£1,651 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,667 GBP
View
B+
Retailer 6
-
£1,740 GBP
View
A
Retailer 7
-
£1,783 GBP
View
Retailer 8
-
£1,834 GBP
View
Price last confirmed 29 days ago
B+
Retailer 9
-
£1,889 GBP
View
B+
Retailer 10
-
£1,955 GBP
View
Retailer 11
-
£2,016 GBP
View
Price last confirmed 25 days ago
Retailer 12
-
£2,016 GBP
View
Price last confirmed 39 days ago
Retailer 13
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£2,016 GBP
View
Price last confirmed 28 days ago
B+
Retailer 14
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£2,058 GBP
View
B+
Retailer 15
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£2,058 GBP
View
B+
Retailer 16
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£2,077 GBP
View
Retailer 17
-
£2,088 GBP
View
Price last confirmed 26 days ago
Retailer 18
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£2,093 GBP
View
Price last confirmed 38 days ago
B+
Retailer 19
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£2,125 GBP
View
Retailer 20
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£2,258 GBP
View
Price last confirmed 30 days ago
B+
Retailer 21
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£2,291 GBP
View
Retailer 22
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£2,326 GBP
View
Price last confirmed 38 days ago
B+
Retailer 23
-
£2,410 GBP
View
B+
Retailer 24
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£2,415 GBP
View
Retailer 25
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£4,214 GBP
View
Price last confirmed 40 days ago
Retailer 26
-
£4,214 GBP
View
Price last confirmed 34 days ago
Most Expensive
MOH London
28CA7764F · Oct 21
£6,687 GBP
View
Price last confirmed 16 days ago
26 more retailers have this diamond
Prices start from £1,502 GBPSave up to £912 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
£1,502 GBP