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Round|Natural|GIA

1.00ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 2377826972

Certificate GIA 2377826972

Diamond specifications and retailer prices

From £1,109 GBP
As of November 5, 2026
Save £2,089 GBP (65%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,198 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2377826972. Listed at 17 retailers as of November 5, 2026, with prices from £1,109 to £3,198, a £2,089 spread on the same certified stone. NZ Jewellers lists it at £3,198. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2377826972
Dimensions6.38 × 6.35 × 4.02 mm
L/W Ratio1.00
Top View
6.38 mm6.35 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2377826972
Side View
Table 57.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £1,484 GBP|Low: £1,109 GBP|High: £2,711 GBP|Avg: £1,676 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 4£1,109 GBP
Retailer 7£1,112 GBP
Retailer 8£1,401 GBP
Retailer 1£1,484 GBP
Retailer 2£1,553 GBP
Retailer 3£1,652 GBP
Retailer 6£1,886 GBP
Retailer 5£2,672 GBP

31 data points across 8 retailers

17 retailers£1,109 GBP to £3,198 GBP

A
Cheapest Retailer
-
£1,109 GBP
A
Retailer 2
-
£1,112 GBP
View
B+
Retailer 3
-
£1,341 GBP
View
Retailer 4
-
£1,365 GBP
View
Price last confirmed 82 days ago
B+
Retailer 5
-
£1,401 GBP
View
B+
Retailer 6
-
£1,484 GBP
View
B+
Retailer 7
-
£1,530 GBP
View
B+
Retailer 8
-
£1,553 GBP
View
B+
Retailer 9
-
£1,600 GBP
View
B
Retailer 10
-
£1,632 GBP
View
B+
Retailer 11
-
£1,652 GBP
View
B
Retailer 12
-
£1,670 GBP
View
B
Retailer 13
-
£1,765 GBP
View
B+
Retailer 14
-
£1,886 GBP
View
B
Retailer 15
-
£2,109 GBP
View
B
Retailer 16
-
£2,672 GBP
View
Most Expensive
C
NZ Jewellers
63169afc-01db-4f88-96d9-9f46409f14aa · Nov 5
£3,198 GBP
$4,304 USD
View
16 more retailers have this diamond
Prices start from £1,109 GBPSave up to £2,089 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
£1,109 GBP