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Round|Natural|GIA

1.01ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 2245005131

Certificate GIA 2245005131

Diamond specifications and retailer prices

From £874 GBP
As of November 6, 2026
Save £1,213 GBP (58%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,060 GBP at NZ Jewellers · As of September 25, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2245005131. Listed at 11 retailers as of November 4, 2026, with a 139% 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2245005131
Dimensions6.35 × 6.38 × 3.98 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
6.35 mm6.38 mm1.01 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245005131
Side View
Table 57.0%Crown 36°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.6%

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: £1,222 GBP|Low: £865 GBP|High: £2,221 GBP|Avg: £1,371 GBP|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10£874 GBP
Retailer 6£1,101 GBP
Retailer 9£1,103 GBP
Retailer 4£1,181 GBP
Retailer 1£1,222 GBP
Retailer 11£1,263 GBP
Retailer 3£1,273 GBP
Retailer 8£1,300 GBP
Retailer 2£1,599 GBP
Retailer 7£1,794 GBP
Retailer 5£2,087 GBP

40 data points across 11 retailers

11 retailers£874 GBP to £2,087 GBP

A
Cheapest Retailer
-
£874 GBP
A
Retailer 2
-
£1,101 GBP
View
A
Retailer 3
-
£1,103 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,181 GBP
View
A
Retailer 5
-
£1,222 GBP
View
B+
Retailer 6
-
£1,263 GBP
View
B+
Retailer 7
-
£1,273 GBP
View
A
Retailer 8
-
£1,300 GBP
View
B
Retailer 9
-
£1,794 GBP
View
B
Retailer 10
-
£2,087 GBP
View
Most Expensive
NZ Jewellers
81fd4847-31a6-45bb-9999-28a73eef0980 · Sep 25
£3,060 GBP
$4,118 USD
View
Price last confirmed 42 days ago
10 more retailers have this diamond
Prices start from £874 GBPSave up to £1,213 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
£874 GBP