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Round|Natural|GIA

1.20ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6562059704

Certificate GIA 6562059704

Diamond specifications and retailer prices

From £1,443 GBP
As of November 6, 2026
Save £1,922 GBP (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,027 GBP at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct 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 6562059704. Listed at 19 retailers as of November 4, 2026, with a 133% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.20
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6562059704
Dimensions6.76 × 6.79 × 4.25 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
6.76 mm6.79 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6562059704
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.7%

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 6
Current: £1,502 GBP|Low: £1,443 GBP|High: £3,414 GBP|Avg: £2,142 GBP|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£1,443 GBP
Retailer 1£1,502 GBP
Retailer 6£1,688 GBP
Retailer 9£1,793 GBP
Retailer 2£2,013 GBP
Retailer 3£2,026 GBP
Retailer 5£2,350 GBP
Retailer 4£2,387 GBP
Retailer 7£3,365 GBP

33 data points across 9 retailers

19 retailers£1,443 GBP to £3,365 GBP

A
Cheapest Retailer
-
£1,443 GBP
A
Retailer 2
-
£1,502 GBP
View
B+
Retailer 3
-
£1,688 GBP
View
B+
Retailer 4
-
£1,793 GBP
View
B+
Retailer 5
-
£1,793 GBP
View
Retailer 6
-
£1,926 GBP
View
Price last confirmed 39 days ago
Retailer 7
-
£1,926 GBP
View
Price last confirmed 25 days ago
B+
Retailer 8
-
£1,927 GBP
View
B+
Retailer 9
-
£1,972 GBP
View
B+
Retailer 10
-
£2,013 GBP
View
Retailer 11
-
£2,015 GBP
View
Price last confirmed 38 days ago
B+
Retailer 12
-
£2,026 GBP
View
B
Retailer 13
-
£2,031 GBP
View
Retailer 14
-
£2,223 GBP
View
Price last confirmed 38 days ago
B
Retailer 15
-
£2,350 GBP
View
B
Retailer 16
-
£2,387 GBP
View
B
Retailer 17
-
£3,365 GBP
View
Retailer 18
-
£4,027 GBP
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
4b0438c8-5be5-4b9c-8c75-406a5265c703 · Oct 3
£4,027 GBP
$5,390 USD
View
Price last confirmed 34 days ago
18 more retailers have this diamond
Prices start from £1,443 GBPSave up to £1,922 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
1.20ct Round
£1,443 GBP