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Round|Natural|GIA

1.20ct K SI1 Round Natural Diamond

VG • K/SI1 • GIA 2537841477

Certificate GIA 2537841477

Diamond specifications and retailer prices

From £1,186 GBP
As of November 6, 2026
Save £2,202 GBP (65%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,388 GBP at NZ Jewellers · As of November 5, 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 very-good cut grade and certified by GIA 2537841477. Listed at 17 retailers as of November 5, 2026, with prices from £1,186 to £3,388, a £2,202 spread on the same certified stone. NZ Jewellers lists it at £3,388. 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

1.20
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40°
OriginNatural
Grading LabGIA
CertificateGIA 2537841477
Dimensions6.65 × 6.56 × 4.20 mm
L/W Ratio1.01
Top View
6.65 mm6.56 mm1.20 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2537841477
Side View
Table 58.0%Crown 38°Girdle: STK-THKPavilion 40°Culet: NoneDepth 63.5%

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: £1,593 GBP|Low: £1,176 GBP|High: £2,873 GBP|Avg: £1,775 GBP|+0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 12£1,186 GBP
Retailer 13£1,373 GBP
Retailer 9£1,490 GBP
Retailer 2£1,578 GBP
Retailer 11£1,584 GBP
Retailer 1£1,593 GBP
Retailer 4£1,620 GBP
Retailer 3£1,695 GBP
Retailer 7£1,860 GBP
Retailer 5£1,870 GBP
Retailer 8£1,978 GBP
Retailer 6£2,008 GBP
Retailer 10£2,831 GBP

45 data points across 13 retailers

17 retailers£1,186 GBP to £3,388 GBP

A
Cheapest Retailer
-
£1,186 GBP
B+
Retailer 2
-
£1,373 GBP
View
B+
Retailer 3
-
£1,464 GBP
View
A
Retailer 4
-
£1,490 GBP
View
B+
Retailer 5
-
£1,584 GBP
View
B+
Retailer 6
-
£1,593 GBP
View
Retailer 7
-
£1,620 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£1,645 GBP
View
B+
Retailer 9
-
£1,695 GBP
View
B+
Retailer 10
-
£1,717 GBP
View
B+
Retailer 11
-
£1,860 GBP
View
B
Retailer 12
-
£1,870 GBP
View
B
Retailer 13
-
£1,978 GBP
View
B
Retailer 14
-
£2,008 GBP
View
B
Retailer 15
-
£2,283 GBP
View
B
Retailer 16
-
£2,831 GBP
View
Most Expensive
C
NZ Jewellers
746c22da-335a-403c-ba16-b3ff5194fb2a · Nov 5
£3,388 GBP
$4,535 USD
View
16 more retailers have this diamond
Prices start from £1,186 GBPSave up to £2,202 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
£1,186 GBP