Round|Natural|GIA

1.02ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2427869838

Certificate GIA 2427869838

Diamond specifications and retailer prices

From £1,123 GBP
As of October 31, 2026
Save £2,114 GBP (65%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,237 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2427869838. Listed at 19 retailers as of October 31, 2026, with prices from £1,123 to £3,237, a £2,114 spread on the same certified stone. NZ Jewellers lists it at £3,237. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.02
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle32°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2427869838
Dimensions6.49 × 6.46 × 3.97 mm
L/W Ratio1.00
Top View
6.49 mm6.46 mm1.02 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2427869838
Side View
Table 59.0%Crown 32°Girdle: THN-STKPavilion 41.6°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £1,570 GBP|Low: £1,121 GBP|High: £2,745 GBP|Avg: £1,671 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7£1,123 GBP
Retailer 8£1,132 GBP
Retailer 10£1,399 GBP
Retailer 9£1,476 GBP
Retailer 1£1,570 GBP
Retailer 2£1,620 GBP
Retailer 4£1,672 GBP
Retailer 3£1,889 GBP
Retailer 6£1,904 GBP
Retailer 5£2,713 GBP

40 data points across 10 retailers

19 retailers£1,123 GBP to £3,237 GBP

A
Cheapest Retailer
-
£1,123 GBP
A
Retailer 2
-
£1,132 GBP
View
B+
Retailer 3
-
£1,357 GBP
View
B+
Retailer 4
-
£1,399 GBP
View
B+
Retailer 5
-
£1,476 GBP
View
B+
Retailer 6
-
£1,548 GBP
View
Retailer 7
-
£1,548 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£1,568 GBP
View
B+
Retailer 9
-
£1,570 GBP
View
Retailer 10
-
£1,600 GBP
View
Price last confirmed 109 days ago
B+
Retailer 11
-
£1,620 GBP
View
B+
Retailer 12
-
£1,651 GBP
View
B+
Retailer 13
-
£1,672 GBP
View
B
Retailer 14
-
£1,787 GBP
View
B+
Retailer 15
-
£1,889 GBP
View
B+
Retailer 16
-
£1,904 GBP
View
B
Retailer 17
-
£2,355 GBP
View
B
Retailer 18
-
£2,713 GBP
View
Most Expensive
B
NZ Jewellers
76b7396f-8749-4db6-ab71-bf60b74db0de · Nov 5
£3,237 GBP
$4,357 USD
View
18 more retailers have this diamond
Prices start from £1,123 GBPSave up to £2,114 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
£1,123 GBP