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Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 5242053949

Certificate GIA 5242053949

Diamond specifications and retailer prices

From £1,109 GBP
As of November 5, 2026
Save £983 GBP (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,093 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5242053949. Listed at 9 retailers as of November 5, 2026, with prices from £1,109 to £2,093, a £983 spread on the same certified stone. Wholesale Diamonds Direct lists it at £2,093. 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5242053949
Dimensions6.74 × 4.23 × 4.23 mm
L/W Ratio1.59
Culet sizeNone
Top View
6.74 mm4.23 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5242053949
Side View
Table 58.0%Crown 36.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 62.7%

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: Nov 5
Current: £1,269 GBP|Low: £960 GBP|High: £2,359 GBP|Avg: £1,565 GBP|-11.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 6, 2026
Retailer 9£960 GBP
Retailer 3£1,109 GBP
Retailer 1£1,269 GBP
Retailer 5£1,278 GBP
Retailer 8£1,382 GBP
Retailer 2£1,512 GBP
Retailer 4£1,622 GBP
Retailer 7£1,659 GBP
Retailer 6£1,935 GBP
Wholesale Diamonds Direct£2,093 GBP

34 data points across 10 retailers

9 retailers£1,109 GBP to £2,093 GBP

A
Cheapest Retailer
-
£1,109 GBP
A
Retailer 2
-
£1,269 GBP
View
A
Retailer 3
-
£1,278 GBP
View
A
Retailer 4
-
£1,382 GBP
View
B+
Retailer 5
-
£1,512 GBP
View
A
Retailer 6
-
£1,622 GBP
View
B+
Retailer 7
-
£1,659 GBP
View
B+
Retailer 8
-
£1,935 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
610677878 · Nov 6
£2,093 GBP
$2,801 USD
View
8 more retailers have this diamond
Prices start from £1,109 GBPSave up to £983 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
£1,109 GBP