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Round|Natural|GIA

1.00ct H SI2 Round Natural Diamond

VG • H/SI2 • GIA 6412359992

Certificate GIA 6412359992

Diamond specifications and retailer prices

From £1,449 GBP
As of October 31, 2026
Save £2,713 GBP (65%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,162 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by GIA 6412359992. Listed at 19 retailers as of October 31, 2026, with prices from £1,449 to £4,162, a £2,713 spread on the same certified stone. NZ Jewellers lists it at £4,162. 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
H
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 6412359992
Dimensions6.25 × 6.16 × 4.01 mm
L/W Ratio1.01
Top View
6.25 mm6.16 mm1.00 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6412359992
Side View
Table 58.0%Crown 38°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 64.7%

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: Oct 31
Current: £1,852 GBP|Low: £1,445 GBP|High: £3,530 GBP|Avg: £2,070 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7£1,449 GBP
Retailer 8£1,455 GBP
Retailer 9£1,837 GBP
Retailer 6£1,842 GBP
Retailer 1£1,852 GBP
Retailer 2£2,028 GBP
Retailer 3£2,094 GBP
Retailer 5£2,251 GBP
Retailer 4£3,479 GBP

33 data points across 9 retailers

19 retailers£1,449 GBP to £4,162 GBP

A
Cheapest Retailer
-
£1,449 GBP
A
Retailer 2
-
£1,455 GBP
View
B+
Retailer 3
-
£1,761 GBP
View
B+
Retailer 4
-
£1,837 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,842 GBP
View
B+
Retailer 6
-
£1,852 GBP
View
Retailer 7
-
£1,885 GBP
View
Price last confirmed 109 days ago
Retailer 8
-
£1,991 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£1,991 GBP
View
B+
Retailer 10
-
£2,028 GBP
View
B+
Retailer 11
-
£2,068 GBP
View
B+
Retailer 12
-
£2,094 GBP
View
B+
Retailer 13
-
£2,095 GBP
View
B
Retailer 14
-
£2,251 GBP
View
B
Retailer 15
-
£2,297 GBP
View
B
Retailer 16
-
£2,785 GBP
View
B
Retailer 17
-
£3,479 GBP
View
C
Retailer 18
-
£3,804 GBP
View
Most Expensive
C
NZ Jewellers
9b80595b-a9cd-4fb4-99e6-9398ee5f40ac · Nov 5
£4,162 GBP
$5,602 USD
View
18 more retailers have this diamond
Prices start from £1,449 GBPSave up to £2,713 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
£1,449 GBP