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Round|Natural|GIA

1.00ct K SI1 Round Natural Diamond

VG • K/SI1 • GIA 2567265892

Certificate GIA 2567265892

Diamond specifications and retailer prices

From £979 GBP
As of November 6, 2026
Save £2,207 GBP (69%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £3,186 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 2567265892. Listed at 20 retailers as of November 5, 2026, with prices from £979 to £3,186, a £2,207 spread on the same certified stone. NZ Jewellers lists it at £3,186. 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40°
OriginNatural
Grading LabGIA
CertificateGIA 2567265892
Dimensions6.14 × 6.23 × 4.01 mm
L/W Ratio1.01
Top View
6.14 mm6.23 mm1.00 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2567265892
Side View
Table 56.0%Crown 38°Girdle: ThickPavilion 40°Culet: NoneDepth 64.8%

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: £3,186 GBP|Low: £979 GBP|High: £3,217 GBP|Avg: £1,513 GBP|-1.0%
NZ Jewellers
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
Retailer 18
Retailer 19
Retailer 20
November 6, 2026
Retailer 5£979 GBP
Retailer 2£987 GBP
Retailer 8£1,155 GBP
Retailer 19£1,190 GBP
Retailer 14£1,249 GBP
Retailer 17£1,306 GBP
Retailer 10£1,319 GBP
Retailer 11£1,327 GBP
Retailer 18£1,352 GBP
Retailer 4£1,366 GBP
Retailer 12£1,380 GBP
Retailer 6£1,408 GBP
Retailer 13£1,441 GBP
Retailer 16£1,443 GBP
Retailer 9£1,508 GBP
Retailer 15£1,594 GBP
Retailer 7£1,777 GBP
Retailer 3£1,898 GBP
Retailer 20£2,282 GBP
NZ Jewellers£3,186 GBP

17 data points across 20 retailers

20 retailers£979 GBP to £3,186 GBP

A
Cheapest Retailer
-
£979 GBP
A
Retailer 2
-
£987 GBP
View
A
Retailer 3
-
£1,155 GBP
View
A
Retailer 4
-
£1,190 GBP
View
A
Retailer 5
-
£1,249 GBP
View
B+
Retailer 6
-
£1,306 GBP
View
Retailer 7
-
£1,319 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£1,327 GBP
View
B+
Retailer 9
-
£1,352 GBP
View
B+
Retailer 10
-
£1,366 GBP
View
Retailer 11
-
£1,380 GBP
View
Price last confirmed 11 days ago
B+
Retailer 12
-
£1,408 GBP
View
B+
Retailer 13
-
£1,441 GBP
View
B+
Retailer 14
-
£1,443 GBP
View
B+
Retailer 15
-
£1,508 GBP
View
B+
Retailer 16
-
£1,594 GBP
View
B
Retailer 17
-
£1,777 GBP
View
B
Retailer 18
-
£1,898 GBP
View
B
Retailer 19
-
£2,282 GBP
View
Most Expensive
B
NZ Jewellers
686a5fa4-0f8c-42a8-840b-4f20de2dafd9 · Nov 5
£3,186 GBP
$4,288 USD
View
19 more retailers have this diamond
Prices start from £979 GBPSave up to £2,207 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
£979 GBP