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Round|Natural|GIA

1.01ct H SI1 Round Natural Diamond

VG • H/SI1 • GIA 2556991840

Certificate GIA 2556991840

Diamond specifications and retailer prices

From £1,360 GBP
As of November 6, 2026
Save £2,474 GBP (65%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £3,834 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 2556991840. Listed at 21 retailers as of November 5, 2026, with prices from £1,360 to £3,834, a £2,474 spread on the same certified stone. NZ Jewellers lists it at £3,834. 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

1.01
Carat
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle38.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 2556991840
Dimensions6.19 × 6.24 × 4.05 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.19 mm6.24 mm1.01 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2556991840
Side View
Table 55.0%Crown 38.5°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 65.1%

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: £3,834 GBP|Low: £1,350 GBP|High: £3,995 GBP|Avg: £1,992 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 5, 2026
Retailer 3£1,360 GBP
Retailer 16£1,389 GBP
Retailer 17£1,590 GBP
Retailer 8£1,603 GBP
Retailer 11£1,667 GBP
Retailer 18£1,693 GBP
Retailer 20£1,718 GBP
Retailer 7£1,767 GBP
Retailer 10£1,834 GBP
Retailer 13£1,834 GBP
Retailer 6£1,857 GBP
Retailer 12£1,897 GBP
Retailer 15£1,918 GBP
Retailer 14£1,929 GBP
Retailer 19£2,139 GBP
Retailer 9£2,161 GBP
Retailer 2£2,238 GBP
Retailer 4£2,242 GBP
Retailer 5£3,213 GBP
NZ Jewellers£3,834 GBP

22 data points across 20 retailers

21 retailers£1,360 GBP to £3,834 GBP

A
Cheapest Retailer
-
£1,360 GBP
A
Retailer 2
-
£1,389 GBP
View
A
Retailer 3
-
£1,590 GBP
View
A
Retailer 4
-
£1,603 GBP
View
Retailer 5
-
£1,667 GBP
View
Price last confirmed 8 days ago
A
Retailer 6
-
£1,693 GBP
View
Final sale: no returns
B+
Retailer 7
-
£1,718 GBP
View
B+
Retailer 8
-
£1,767 GBP
View
B+
Retailer 9
-
£1,834 GBP
View
Retailer 10
-
£1,834 GBP
View
Price last confirmed 8 days ago
Retailer 11
-
£1,857 GBP
View
Price last confirmed 5 days ago
Retailer 12
-
£1,897 GBP
View
Price last confirmed 10 days ago
B+
Retailer 13
-
£1,918 GBP
View
B+
Retailer 14
-
£1,929 GBP
View
Retailer 15
-
£2,097 GBP
View
Price last confirmed 30 days ago
B+
Retailer 16
-
£2,139 GBP
View
B+
Retailer 17
-
£2,161 GBP
View
B+
Retailer 18
-
£2,238 GBP
View
B+
Retailer 19
-
£2,242 GBP
View
B
Retailer 20
-
£3,213 GBP
View
Most Expensive
B
NZ Jewellers
74e0051a-4d97-473d-80a2-ab7b04b82046 · Nov 5
£3,834 GBP
$5,160 USD
View
20 more retailers have this diamond
Prices start from £1,360 GBPSave up to £2,474 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
1.01ct Round
£1,360 GBP