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Round|Natural|GIA

1.00ct K I1 Round Natural Diamond

VG • K/I1 • GIA 3415873077

Certificate GIA 3415873077

Diamond specifications and retailer prices

From £1,217 GBP
As of November 4, 2026
Save £2,171 GBP (64%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,388 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 I1 clarity (included), with a very-good cut grade and certified by GIA 3415873077. Listed at 12 retailers as of November 4, 2026, with prices from £1,217 to £3,388, a £2,171 spread on the same certified stone. NZ Jewellers lists it at £3,388. 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
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.4°
OriginNatural
Grading LabGIA
CertificateGIA 3415873077
Dimensions6.32 × 6.28 × 3.99 mm
L/W Ratio1.01
Top View
6.32 mm6.28 mm1.00 ctK / I1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 3415873077
Side View
Table 56.0%Crown 36.5°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 63.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £3,388 GBP|Low: £1,207 GBP|High: £3,388 GBP|Avg: £1,759 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 4, 2026
Retailer 6£1,217 GBP
Retailer 5£1,293 GBP
Retailer 7£1,326 GBP
Retailer 9£1,343 GBP
Retailer 10£1,468 GBP
Retailer 12£1,468 GBP
Retailer 8£1,536 GBP
Retailer 11£1,694 GBP
Retailer 3£1,928 GBP
Retailer 2£2,017 GBP
Retailer 4£2,309 GBP
NZ Jewellers£3,388 GBP

24 data points across 12 retailers

12 retailers£1,217 GBP to £3,388 GBP

B+
Cheapest Retailer
-
£1,217 GBP
B
Retailer 2
-
£1,293 GBP
View
B
Retailer 3
-
£1,326 GBP
View
B
Retailer 4
-
£1,343 GBP
View
Retailer 5
-
£1,468 GBP
View
Price last confirmed 8 days ago
B
Retailer 6
-
£1,468 GBP
View
B
Retailer 7
-
£1,536 GBP
View
Retailer 8
-
£1,694 GBP
View
Price last confirmed 60 days ago
B
Retailer 9
-
£1,694 GBP
View
B
Retailer 10
-
£2,017 GBP
View
Retailer 11
-
£3,388 GBP
View
Price last confirmed 57 days ago
Most Expensive
C
NZ Jewellers
747e0698-a5df-4deb-917b-8a5415e50cd7 · Nov 5
£3,388 GBP
$4,560 USD
View
11 more retailers have this diamond
Prices start from £1,217 GBPSave up to £2,171 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.

B+
1.00ct Round
£1,217 GBP