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Round|Natural|IGI

1.02ct I VS1 Round Natural Diamond

VG • I/VS1 • IGI 523201853

Shape and cutting style on the report: Round brilliant

Certificate IGI 523201853

Diamond specifications and retailer prices

From £1,331 GBP
As of November 4, 2026
Save £2,262 GBP (63%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,593 GBP at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.02ct natural round diamond

This 1.02ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI 523201853. Listed at 17 retailers as of November 2, 2026, with prices from £1,331 to £3,593, a £2,262 spread on the same certified stone. NZ Jewellers lists it at £3,593. 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

1.02
Carat
I
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle40°
OriginNatural
Grading LabIGI
CertificateIGI 523201853
Dimensions6.33 × 6.36 × 4.00 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
6.33 mm6.36 mm1.02 ctI / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 523201853
Side View
Table 56.0%Crown 37.6°Girdle: UNDPavilion 40°Culet: NoneDepth 63.1%

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 4
Current: £3,593 GBP|Low: £1,331 GBP|High: £3,593 GBP|Avg: £1,920 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 4, 2026
Retailer 11£1,331 GBP
Retailer 9£1,359 GBP
Retailer 5£1,375 GBP
Retailer 10£1,473 GBP
Retailer 6£1,618 GBP
Retailer 4£1,716 GBP
Retailer 8£1,810 GBP
Retailer 7£2,003 GBP
Retailer 3£2,092 GBP
Retailer 2£2,573 GBP
NZ Jewellers£3,593 GBP

36 data points across 11 retailers

17 retailers£1,331 GBP to £3,593 GBP

A
Cheapest Retailer
-
£1,331 GBP
A
Retailer 2
-
£1,359 GBP
View
Final sale: no returns
Retailer 3
-
£1,371 GBP
View
Price last confirmed 107 days ago
A
Retailer 4
-
£1,375 GBP
View
A
Retailer 5
-
£1,473 GBP
View
A
Retailer 6
-
£1,500 GBP
View
A
Retailer 7
-
£1,541 GBP
View
A
Retailer 8
-
£1,575 GBP
View
A
Retailer 9
-
£1,618 GBP
View
A
Retailer 10
-
£1,699 GBP
View
A
Retailer 11
-
£1,716 GBP
View
A
Retailer 12
-
£1,810 GBP
View
A
Retailer 13
-
£2,003 GBP
View
B+
Retailer 14
-
£2,092 GBP
View
B+
Retailer 15
-
£2,122 GBP
View
B+
Retailer 16
-
£2,573 GBP
View
Most Expensive
B
NZ Jewellers
c75c5f6e-879a-406e-91dc-7aaacf8f0351 · Nov 2
£3,593 GBP
$4,850 USD
View
16 more retailers have this diamond
Prices start from £1,331 GBPSave up to £2,262 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
1.02ct Round
£1,331 GBP