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Round|Natural|GIA

1.01ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1543229917

Certificate GIA 1543229917

Diamond specifications and retailer prices

From £1,388 GBP
As of November 6, 2026
Save £1,807 GBP (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £4,000 GBP at NZ Jewellers · As of October 3, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1543229917. Listed at 20 retailers as of November 4, 2026, with a 130% 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1543229917
Dimensions6.42 × 6.46 × 3.94 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal, Needle
Top View
6.42 mm6.46 mm1.01 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1543229917
Side View
Table 60.0%Crown 33.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.1%

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: £1,389 GBP|Low: £1,369 GBP|High: £3,251 GBP|Avg: £1,939 GBP|-4.2%
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 13£1,388 GBP
Retailer 1£1,389 GBP
Retailer 2£1,652 GBP
Retailer 4£1,665 GBP
Retailer 5£1,688 GBP
Retailer 3£1,817 GBP
Retailer 8£1,923 GBP
Retailer 7£1,927 GBP
Retailer 14£1,933 GBP
Retailer 10£2,094 GBP
Retailer 6£2,112 GBP
Retailer 9£2,173 GBP
Retailer 11£2,232 GBP
Retailer 12£3,195 GBP

25 data points across 14 retailers

20 retailers£1,388 GBP to £3,195 GBP

A
Cheapest Retailer
-
£1,388 GBP
A
Retailer 2
-
£1,389 GBP
View
A
Retailer 3
-
£1,652 GBP
View
A
Retailer 4
-
£1,665 GBP
View
A
Retailer 5
-
£1,688 GBP
View
Final sale: no returns
B+
Retailer 6
-
£1,817 GBP
View
Retailer 7
-
£1,913 GBP
View
Price last confirmed 34 days ago
B+
Retailer 8
-
£1,923 GBP
View
B+
Retailer 9
-
£1,927 GBP
View
B+
Retailer 10
-
£1,933 GBP
View
B+
Retailer 11
-
£1,940 GBP
View
Retailer 12
-
£2,016 GBP
View
Price last confirmed 38 days ago
B+
Retailer 13
-
£2,094 GBP
View
Retailer 14
-
£2,103 GBP
View
Price last confirmed 30 days ago
B+
Retailer 15
-
£2,112 GBP
View
B+
Retailer 16
-
£2,173 GBP
View
Retailer 17
-
£2,207 GBP
View
Price last confirmed 33 days ago
B+
Retailer 18
-
£2,232 GBP
View
B
Retailer 19
-
£3,195 GBP
View
Most Expensive
NZ Jewellers
fa8283ff-59db-4942-a756-3b2d43e224a5 · Oct 3
£4,000 GBP
$5,383 USD
View
Price last confirmed 34 days ago
19 more retailers have this diamond
Prices start from £1,388 GBPSave up to £1,807 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
1.01ct Round
£1,388 GBP