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Round|Natural|GIA

1.01ct K SI1 Round Natural Diamond

VG • K/SI1 • GIA 5221756425

Certificate GIA 5221756425

Diamond specifications and retailer prices

From £1,285 GBP
As of November 6, 2026
Save £2,068 GBP (62%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,352 GBP at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 5221756425. Listed at 18 retailers as of November 5, 2026, with prices from £1,285 to £3,352, a £2,068 spread on the same certified stone. NZ Jewellers lists it at £3,352. 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

1.01
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5221756425
Dimensions6.40 × 6.34 × 4.00 mm
L/W Ratio1.01
Top View
6.40 mm6.34 mm1.01 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5221756425
Side View
Table 57.0%Crown 36°Girdle: THN-THKPavilion 41°Culet: NoneDepth 62.8%

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 6
Current: £3,352 GBP|Low: £1,285 GBP|High: £3,352 GBP|Avg: £1,939 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11£1,285 GBP
Retailer 8£1,313 GBP
Retailer 9£1,352 GBP
Retailer 3£1,482 GBP
Retailer 10£1,520 GBP
Retailer 2£1,732 GBP
Retailer 4£1,868 GBP
Retailer 6£1,957 GBP
Retailer 5£2,034 GBP
Retailer 7£2,802 GBP
NZ Jewellers£3,352 GBP

41 data points across 11 retailers

18 retailers£1,285 GBP to £3,352 GBP

B+
Cheapest Retailer
-
£1,285 GBP
B+
Retailer 2
-
£1,309 GBP
View
B+
Retailer 3
-
£1,313 GBP
View
B+
Retailer 4
-
£1,352 GBP
View
B+
Retailer 5
-
£1,366 GBP
View
B+
Retailer 6
-
£1,414 GBP
View
Retailer 7
-
£1,453 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£1,453 GBP
View
B+
Retailer 9
-
£1,482 GBP
View
B+
Retailer 10
-
£1,520 GBP
View
B
Retailer 11
-
£1,676 GBP
View
B
Retailer 12
-
£1,732 GBP
View
B
Retailer 13
-
£1,868 GBP
View
B
Retailer 14
-
£1,957 GBP
View
B
Retailer 15
-
£2,034 GBP
View
B
Retailer 16
-
£2,303 GBP
View
B
Retailer 17
-
£2,802 GBP
View
Most Expensive
C
NZ Jewellers
bc1e63d0-236f-45bb-85cb-fee2117aeba2 · Nov 5
£3,352 GBP
$4,512 USD
View
17 more retailers have this diamond
Prices start from £1,285 GBPSave up to £2,068 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+
1.01ct Round
£1,285 GBP