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Round|Natural|GIA

1.03ct H IF Round Natural Diamond

EX • H/IF • GIA 6425798055

Certificate GIA 6425798055

Diamond specifications and retailer prices

From £4,256 GBP
As of November 4, 2026
Save £3,421 GBP (45%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £10,535 GBP at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.03ct natural round diamond

This 1.03ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 6425798055. Listed at 23 retailers as of November 4, 2026, with a 80% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
H
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6425798055
Dimensions6.49 × 6.46 × 4.02 mm
L/W Ratio1.00
Top View
6.49 mm6.46 mm1.03 ctH / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6425798055
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.2%

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 4
Current: £5,673 GBP|Low: £4,250 GBP|High: £7,792 GBP|Avg: £5,356 GBP|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 4£4,256 GBP
Retailer 5£4,495 GBP
Retailer 8£4,823 GBP
Retailer 9£4,823 GBP
Retailer 2£4,929 GBP
Retailer 7£5,072 GBP
Retailer 1£5,673 GBP
Retailer 6£6,420 GBP
Retailer 3£7,677 GBP

37 data points across 9 retailers

23 retailers£4,256 GBP to £7,677 GBP

B+
Cheapest Retailer
-
£4,256 GBP
B+
Retailer 2
-
£4,422 GBP
View
B+
Retailer 3
-
£4,495 GBP
View
B+
Retailer 4
-
£4,558 GBP
View
B
Retailer 5
-
£4,823 GBP
View
Final sale: no returns
B
Retailer 6
-
£4,823 GBP
View
B
Retailer 7
-
£4,832 GBP
View
B
Retailer 8
-
£4,837 GBP
View
B+
Retailer 9
-
£4,929 GBP
View
Retailer 10
-
£5,072 GBP
View
Price last confirmed 14 days ago
Retailer 11
-
£5,225 GBP
View
Price last confirmed 38 days ago
Retailer 12
-
£5,225 GBP
View
Price last confirmed 35 days ago
Retailer 13
-
£5,306 GBP
View
Price last confirmed 37 days ago
B
Retailer 14
-
£5,347 GBP
View
B
Retailer 15
-
£5,650 GBP
View
B
Retailer 16
-
£5,673 GBP
View
Retailer 17
-
£6,030 GBP
View
Price last confirmed 37 days ago
B
Retailer 18
-
£6,030 GBP
View
B
Retailer 19
-
£6,420 GBP
View
B
Retailer 20
-
£7,677 GBP
View
Retailer 21
-
£8,741 GBP
View
Price under review
Retailer 22
-
£8,741 GBP
View
Price under review
Most Expensive
Diamond Quarter
1.03IFH64556BEAN · Nov 5
£10,535 GBP
View
Price under review
22 more retailers have this diamond
Prices start from £4,256 GBPSave up to £3,421 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.

B+
1.03ct Round
£4,256 GBP