Round|Natural|GIA

1.05ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 7511532487

Certificate GIA 7511532487

Diamond specifications and retailer prices

From £2,013 GBP
As of November 5, 2026
Save £1,037 GBP (34%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,595 GBP at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1.05ct natural round diamond

This 1.05ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7511532487. Listed at 18 retailers as of November 5, 2026, with a 52% 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

1.05
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 7511532487
Dimensions6.45 × 6.49 × 4.05 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.45 mm6.49 mm1.05 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7511532487
Side View
Table 60.0%Crown 35°Girdle: Slightly ThickPavilion 41.6°Culet: NoneDepth 62.6%

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 5
Current: £3,050 GBP|Low: £1,578 GBP|High: £3,745 GBP|Avg: £2,240 GBP|+34.9%
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
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 3£1,664 GBP
Retailer 17£1,753 GBP
Retailer 16£1,785 GBP
Retailer 6£1,863 GBP
Retailer 12£1,905 GBP
Retailer 5£1,969 GBP
Retailer 7£1,983 GBP
Retailer 4£1,987 GBP
Retailer 11£2,013 GBP
Retailer 8£2,066 GBP
Retailer 15£2,289 GBP
Retailer 9£2,334 GBP
Retailer 13£2,689 GBP
Retailer 10£2,881 GBP
Retailer 1£3,050 GBP
Retailer 14£3,355 GBP
Retailer 2£3,745 GBP

28 data points across 17 retailers

18 retailers£2,013 GBP to £3,050 GBP

Retailer 1
-
£1,664 GBP
Price last confirmed 12 days ago
Retailer 2
-
£1,753 GBP
View
Price last confirmed 16 days ago
Retailer 3
-
£1,785 GBP
View
Price last confirmed 12 days ago
Retailer 4
-
£1,905 GBP
View
Price last confirmed 13 days ago
Retailer 5
-
£1,969 GBP
View
Price last confirmed 14 days ago
Retailer 6
-
£1,983 GBP
View
Price last confirmed 15 days ago
Retailer 7
-
£1,987 GBP
View
Price last confirmed 13 days ago
B+
Retailer 8
-
£2,013 GBP
View
Retailer 9
-
£2,133 GBP
View
Price last confirmed 32 days ago
B+
Retailer 10
-
£2,172 GBP
View
Retailer 11
-
£2,289 GBP
View
Price last confirmed 16 days ago
Retailer 12
-
£2,334 GBP
View
Price last confirmed 33 days ago
Retailer 13
-
£2,689 GBP
View
Price last confirmed 15 days ago
B
Retailer 14
-
£2,881 GBP
View
B
Retailer 15
-
£3,050 GBP
View
Retailer 16
-
£3,355 GBP
View
Price last confirmed 14 days ago
Retailer 17
-
£3,745 GBP
View
Price last confirmed 16 days ago
Most Expensive
NZ Jewellers
f26449d6-4833-4092-be3e-55f2c9c9e34a · Sep 21
£4,595 GBP
$6,184 USD
View
Price last confirmed 45 days ago
17 more retailers have this diamond
Prices start from £2,013 GBPSave up to £1,037 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+
1.05ct Round
£2,013 GBP