Round|Natural|GIA

1.00ct G SI1 Round Natural Diamond

VG • G/SI1 • GIA 6551995027

Certificate GIA 6551995027

Diamond specifications and retailer prices

From £1,284 GBP
As of November 5, 2026
Save £860 GBP (40%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £3,346 GBP at NZ Jewellers · As of October 20, 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 6551995027. Listed at 24 retailers as of November 5, 2026, with a 67% 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
FluorescenceMedium
Crown angle38.5°
Pavilion angle40°
OriginNatural
Grading LabGIA
CertificateGIA 6551995027
Dimensions6.23 × 6.15 × 3.98 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.23 mm6.15 mm1.00 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6551995027
Side View
Table 58.0%Crown 38.5°Girdle: MED-THKPavilion 40°Culet: NDepth 64.2%

Caratlytics Score

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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: £3,346 GBP|Low: £1,217 GBP|High: £3,490 GBP|Avg: £1,881 GBP|-4.1%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 6, 2026
Retailer 11£1,249 GBP
Retailer 3£1,284 GBP
Retailer 2£1,378 GBP
Retailer 6£1,408 GBP
Retailer 21£1,484 GBP
Retailer 7£1,516 GBP
Retailer 14£1,516 GBP
Retailer 18£1,549 GBP
Retailer 16£1,611 GBP
Retailer 12£1,648 GBP
Retailer 8£1,652 GBP
Retailer 5£1,768 GBP
Retailer 22£1,768 GBP
Retailer 19£1,819 GBP
Retailer 17£1,828 GBP
Retailer 10£1,846 GBP
Retailer 4£2,054 GBP
Retailer 13£2,055 GBP
Retailer 15£2,078 GBP
Retailer 20£2,144 GBP
Retailer 9£2,818 GBP
NZ Jewellers£3,346 GBP

25 data points across 22 retailers

24 retailers£1,284 GBP to £2,144 GBP

Retailer 1
-
£1,249 GBP
Price last confirmed 17 days ago
A
Retailer 2
-
£1,284 GBP
View
A
Retailer 3
-
£1,378 GBP
View
A
Retailer 4
-
£1,408 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,484 GBP
View
Retailer 6
-
£1,516 GBP
View
Price last confirmed 22 days ago
A
Retailer 7
-
£1,549 GBP
View
B+
Retailer 8
-
£1,611 GBP
View
Retailer 9
-
£1,648 GBP
View
Price last confirmed 21 days ago
Retailer 10
-
£1,648 GBP
View
Price last confirmed 17 days ago
Retailer 11
-
£1,652 GBP
View
Price last confirmed 16 days ago
B+
Retailer 12
-
£1,689 GBP
View
Retailer 13
-
£1,724 GBP
View
Price last confirmed 22 days ago
B+
Retailer 14
-
£1,768 GBP
View
B+
Retailer 15
-
£1,768 GBP
View
B+
Retailer 16
-
£1,819 GBP
View
B+
Retailer 17
-
£1,828 GBP
View
Retailer 18
-
£1,846 GBP
View
Price last confirmed 16 days ago
B+
Retailer 19
-
£2,054 GBP
View
B+
Retailer 20
-
£2,055 GBP
View
Retailer 21
-
£2,078 GBP
View
Price last confirmed 31 days ago
B+
Retailer 22
-
£2,144 GBP
View
Retailer 23
-
£2,818 GBP
View
Price last confirmed 16 days ago
Most Expensive
NZ Jewellers
26d58c3d-955b-4e7c-893a-a17bfa42d8f1 · Oct 20
£3,346 GBP
$4,503 USD
View
Price last confirmed 17 days ago
23 more retailers have this diamond
Prices start from £1,284 GBPSave up to £860 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
£1,284 GBP