Round|Natural|GIA

1.00ct K VS1 Round Natural Diamond

VG • K/VS1 • GIA 2557990645

Certificate GIA 2557990645

Diamond specifications and retailer prices

From £1,141 GBP
As of November 6, 2026
Save £1,516 GBP (57%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £3,181 GBP at NZ Jewellers · As of September 28, 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 VS1 clarity (very-slightly-included), with a very-good cut grade and certified by GIA 2557990645. Listed at 23 retailers as of November 4, 2026, with a 133% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
K
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2557990645
Dimensions6.20 × 6.24 × 4.02 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Natural
Top View
6.20 mm6.24 mm1.00 ctK / VS1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557990645
Side View
Table 57.0%Crown 37°Girdle: MED-THKPavilion 40.6°Culet: NoneDepth 64.6%

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: £1,190 GBP|Low: £1,141 GBP|High: £2,697 GBP|Avg: £1,758 GBP|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9£1,141 GBP
Retailer 1£1,190 GBP
Retailer 7£1,402 GBP
Retailer 2£1,586 GBP
Retailer 3£1,633 GBP
Retailer 4£1,750 GBP
Retailer 6£1,857 GBP
Retailer 5£2,062 GBP
Retailer 8£2,658 GBP

36 data points across 9 retailers

23 retailers£1,141 GBP to £2,658 GBP

A
Cheapest Retailer
-
£1,141 GBP
A
Retailer 2
-
£1,190 GBP
View
A
Retailer 3
-
£1,402 GBP
View
B+
Retailer 4
-
£1,424 GBP
View
B+
Retailer 5
-
£1,427 GBP
View
B+
Retailer 6
-
£1,516 GBP
View
Retailer 7
-
£1,522 GBP
View
Price last confirmed 60 days ago
Retailer 8
-
£1,522 GBP
View
Price last confirmed 39 days ago
Retailer 9
-
£1,522 GBP
View
Price last confirmed 17 days ago
Retailer 10
-
£1,522 GBP
View
Price last confirmed 21 days ago
B+
Retailer 11
-
£1,586 GBP
View
Retailer 12
-
£1,591 GBP
View
Price last confirmed 38 days ago
B+
Retailer 13
-
£1,623 GBP
View
B+
Retailer 14
-
£1,633 GBP
View
B+
Retailer 15
-
£1,750 GBP
View
Retailer 16
-
£1,756 GBP
View
Price last confirmed 60 days ago
Retailer 17
-
£1,756 GBP
View
Price last confirmed 38 days ago
B+
Retailer 18
-
£1,857 GBP
View
B
Retailer 19
-
£2,062 GBP
View
B
Retailer 20
-
£2,658 GBP
View
Retailer 21
-
£3,181 GBP
View
Price last confirmed 66 days ago
Retailer 22
-
£3,181 GBP
View
Price last confirmed 20 days ago
Most Expensive
NZ Jewellers
149f69f3-d5ea-4e93-9f6b-b80eda384026 · Sep 28
£3,181 GBP
$4,281 USD
View
Price last confirmed 39 days ago
22 more retailers have this diamond
Prices start from £1,141 GBPSave up to £1,516 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
£1,141 GBP