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Round|Natural|GIA

1.20ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2245083800

Certificate GIA 2245083800

Diamond specifications and retailer prices

From £1,644 GBP
As of November 5, 2026
Save £1,662 GBP (50%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,306 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2245083800. Listed at 8 retailers as of November 5, 2026, with prices from £1,644 to £3,306, a £1,662 spread on the same certified stone. Wholesale Diamonds Direct lists it at £3,306. 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 2245083800
Dimensions6.76 × 4.23 × 4.23 mm
L/W Ratio1.60
Culet sizeNone
Top View
6.76 mm4.23 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245083800
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.4%

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 5
Current: £1,989 GBP|Low: £1,635 GBP|High: £3,353 GBP|Avg: £2,486 GBP|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Wholesale Diamonds Direct
November 6, 2026
Retailer 2£1,644 GBP
Retailer 1£1,989 GBP
Retailer 7£2,202 GBP
Retailer 3£2,422 GBP
Retailer 6£2,446 GBP
Retailer 4£2,538 GBP
Retailer 5£3,084 GBP
Wholesale Diamonds Direct£3,306 GBP

20 data points across 8 retailers

8 retailers£1,644 GBP to £3,306 GBP

A
Cheapest Retailer
-
£1,644 GBP
A
Retailer 2
-
£1,989 GBP
View
B+
Retailer 3
-
£2,202 GBP
View
B+
Retailer 4
-
£2,422 GBP
View
B+
Retailer 5
-
£2,446 GBP
View
B+
Retailer 6
-
£2,538 GBP
View
B
Retailer 7
-
£3,084 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
472159468 · Nov 6
£3,306 GBP
$4,425 USD
View
7 more retailers have this diamond
Prices start from £1,644 GBPSave up to £1,662 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
£1,644 GBP