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Round|Natural|GIA

1.02ct I SI1 Round Natural Diamond

VG • I/SI1 • GIA 2518108397

Certificate GIA 2518108397

Diamond specifications and retailer prices

From £1,540 GBP
As of November 4, 2026
Save £2,100 GBP (58%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,641 GBP at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 2518108397. Listed at 18 retailers as of November 4, 2026, with prices from £1,540 to £3,641, a £2,100 spread on the same certified stone. NZ Jewellers lists it at £3,641. 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2518108397
Dimensions6.37 × 6.33 × 4.03 mm
L/W Ratio1.01
Star length45%
Lower girdle75%
Top View
6.37 mm6.33 mm1.02 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2518108397
Side View
Table 57.0%Crown 36°Girdle: STK-THKPavilion 41°Culet: NoneDepth 63.4%

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: £2,158 GBP|Low: £1,340 GBP|High: £3,087 GBP|Avg: £2,012 GBP|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 9£1,540 GBP
Retailer 6£1,608 GBP
Retailer 5£1,612 GBP
Retailer 8£1,822 GBP
Retailer 3£1,881 GBP
Retailer 2£2,126 GBP
Retailer 7£2,144 GBP
Retailer 1£2,158 GBP
Retailer 4£3,043 GBP

44 data points across 9 retailers

18 retailers£1,540 GBP to £3,641 GBP

A
Cheapest Retailer
-
£1,540 GBP
A
Retailer 2
-
£1,573 GBP
View
B+
Retailer 3
-
£1,608 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,612 GBP
View
B+
Retailer 5
-
£1,739 GBP
View
Retailer 6
-
£1,742 GBP
View
Price last confirmed 60 days ago
Retailer 7
-
£1,742 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£1,742 GBP
View
B+
Retailer 9
-
£1,822 GBP
View
B+
Retailer 10
-
£1,845 GBP
View
B+
Retailer 11
-
£1,881 GBP
View
Retailer 12
-
£2,010 GBP
View
Price last confirmed 60 days ago
B+
Retailer 13
-
£2,010 GBP
View
B+
Retailer 14
-
£2,126 GBP
View
Retailer 15
-
£2,144 GBP
View
Price last confirmed 30 days ago
B+
Retailer 16
-
£2,158 GBP
View
B
Retailer 17
-
£3,043 GBP
View
Most Expensive
B
NZ Jewellers
e18a236a-74eb-4954-adfb-8ae465e80a09 · Nov 5
£3,641 GBP
$4,900 USD
View
17 more retailers have this diamond
Prices start from £1,540 GBPSave up to £2,100 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
£1,540 GBP