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Round|Natural|GIA

1.03ct I IF Round Natural Diamond

ID • I/IF • GIA 200

Certificate GIA 200

Diamond specifications and retailer prices

From £1,808 GBP
As of November 4, 2026
Save £2,287 GBP (56%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,597 GBP at Helzberg Diamonds · As of October 2, 2026
View at Helzberg Diamonds

About this 1.03ct natural round diamond

This 1.03ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA. Listed at 10 retailers as of November 4, 2026, with a 126% 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
I
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 200
Dimensions6.45 × 6.49 × 4.02 mm
L/W Ratio1.01
Top View
6.45 mm6.49 mm1.03 ctI / IF
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 200
Side View
Table 58.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.2%

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 4
Current: £4,597 GBP|Low: £1,808 GBP|High: £5,242 GBP|Avg: £3,185 GBP|-12.3%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 3, 2026
Retailer 6£1,808 GBP
Retailer 2£1,959 GBP
Retailer 4£2,034 GBP
Retailer 5£2,260 GBP
Retailer 7£2,695 GBP
Retailer 8£3,056 GBP
Retailer 3£4,095 GBP
Helzberg Diamonds£4,597 GBP

12 data points across 8 retailers

10 retailers£1,808 GBP to £4,095 GBP

A
Cheapest Retailer
-
£1,808 GBP
A
Retailer 2
-
£1,959 GBP
View
A
Retailer 3
-
£1,959 GBP
View
A
Retailer 4
-
£2,034 GBP
View
A
Retailer 5
-
£2,260 GBP
View
A
Retailer 6
-
£2,260 GBP
View
Retailer 7
-
£3,056 GBP
View
Price last confirmed 39 days ago
B+
Retailer 8
-
£4,095 GBP
View
B+
Retailer 9
-
£4,095 GBP
View
Most Expensive
Helzberg Diamonds
XZRLLMMHNJOKO · Oct 2
£4,597 GBP
$6,206 USD
View
Price last confirmed 34 days ago
9 more retailers have this diamond
Prices start from £1,808 GBPSave up to £2,287 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
1.03ct Round
£1,808 GBP