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Round|Natural|GIA

1.00ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2434111237

Certificate GIA 2434111237

Diamond specifications and retailer prices

From £1,555 GBP
As of November 6, 2026
Save £2,932 GBP (65%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,487 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2434111237. Listed at 19 retailers as of November 5, 2026, with prices from £1,555 to £4,487, a £2,932 spread on the same certified stone. NZ Jewellers lists it at £4,487. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2434111237
Dimensions6.53 × 6.50 × 3.85 mm
L/W Ratio1.00
Top View
6.53 mm6.50 mm1.00 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2434111237
Side View
Table 60.0%Crown 33°Girdle: MediumPavilion 40.8°Culet: NoneDepth 59.1%

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: £1,555 GBP|Low: £1,504 GBP|High: £3,632 GBP|Avg: £2,163 GBP|-2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 1£1,555 GBP
Retailer 7£1,578 GBP
Retailer 9£1,904 GBP
Retailer 8£1,921 GBP
Retailer 10£1,980 GBP
Retailer 3£2,193 GBP
Retailer 2£2,228 GBP
Retailer 4£2,258 GBP
Retailer 6£2,438 GBP
Retailer 5£3,579 GBP

42 data points across 10 retailers

19 retailers£1,555 GBP to £4,487 GBP

A
Cheapest Retailer
-
£1,555 GBP
A
Retailer 2
-
£1,578 GBP
View
B+
Retailer 3
-
£1,832 GBP
View
B+
Retailer 4
-
£1,904 GBP
View
B+
Retailer 5
-
£1,921 GBP
View
B+
Retailer 6
-
£1,980 GBP
View
Final sale: no returns
B+
Retailer 7
-
£2,046 GBP
View
B+
Retailer 8
-
£2,146 GBP
View
Retailer 9
-
£2,146 GBP
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£2,193 GBP
View
Retailer 11
-
£2,217 GBP
View
Price last confirmed 109 days ago
B+
Retailer 12
-
£2,228 GBP
View
B
Retailer 13
-
£2,251 GBP
View
B+
Retailer 14
-
£2,258 GBP
View
B+
Retailer 15
-
£2,438 GBP
View
B+
Retailer 16
-
£2,476 GBP
View
B
Retailer 17
-
£2,588 GBP
View
B
Retailer 18
-
£3,579 GBP
View
Most Expensive
B
NZ Jewellers
2eb25f1f-469e-43b5-9c22-8be582780b0b · Nov 5
£4,487 GBP
$6,039 USD
View
18 more retailers have this diamond
Prices start from £1,555 GBPSave up to £2,932 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
£1,555 GBP