Round|Natural|GIA

1.01ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2235509654

Certificate GIA 2235509654

Diamond specifications and retailer prices

From £1,949 GBP
As of November 4, 2026
Save £981 GBP (33%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,570 GBP at NZ Jewellers · As of September 27, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2235509654. Listed at 19 retailers as of November 4, 2026, with a 50% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.01
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2235509654
Dimensions6.46 × 6.44 × 3.96 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.46 mm6.44 mm1.01 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2235509654
Side View
Table 59.0%Crown 33.5°Girdle: Sli. ThickPavilion 41.6°Culet: NoneDepth 61.5%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £2,930 GBP|Low: £1,834 GBP|High: £4,439 GBP|Avg: £2,569 GBP|+14.2%
Retailer 1
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
November 6, 2026
Retailer 8£1,949 GBP
Retailer 6£1,968 GBP
Retailer 12£2,011 GBP
Retailer 4£2,129 GBP
Retailer 11£2,271 GBP
Retailer 3£2,389 GBP
Retailer 10£2,457 GBP
Retailer 5£2,571 GBP
Retailer 9£2,571 GBP
Retailer 13£2,660 GBP
Retailer 7£2,774 GBP
Retailer 1£2,930 GBP
Retailer 2£2,972 GBP
Retailer 14£4,439 GBP

44 data points across 14 retailers

19 retailers£1,949 GBP to £2,930 GBP

B+
Cheapest Retailer
-
£1,949 GBP
B+
Retailer 2
-
£1,968 GBP
View
Retailer 3
-
£2,045 GBP
View
Price last confirmed 102 days ago
B+
Retailer 4
-
£2,088 GBP
View
B+
Retailer 5
-
£2,271 GBP
View
B
Retailer 6
-
£2,311 GBP
View
Retailer 7
-
£2,376 GBP
View
Price last confirmed 29 days ago
Retailer 8
-
£2,376 GBP
View
Price last confirmed 29 days ago
B+
Retailer 9
-
£2,457 GBP
View
Retailer 10
-
£2,467 GBP
View
Price last confirmed 38 days ago
B
Retailer 11
-
£2,571 GBP
View
B
Retailer 12
-
£2,571 GBP
View
B
Retailer 13
-
£2,660 GBP
View
Retailer 14
-
£2,742 GBP
View
Price last confirmed 38 days ago
B
Retailer 15
-
£2,774 GBP
View
B
Retailer 16
-
£2,930 GBP
View
Retailer 17
-
£2,972 GBP
View
Price last confirmed 29 days ago
Retailer 18
-
£4,439 GBP
View
Price last confirmed 32 days ago
Most Expensive
NZ Jewellers
e4288da5-f435-4698-8d24-c8a1a136fb8c · Sep 27
£4,570 GBP
$6,151 USD
View
Price last confirmed 40 days ago
18 more retailers have this diamond
Prices start from £1,949 GBPSave up to £981 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+
1.01ct Round
£1,949 GBP