Round|Natural|GIA

1.20ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2538469749

Certificate GIA 2538469749

Diamond specifications and retailer prices

From £2,104 GBP
As of November 6, 2026
Save £2,470 GBP (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £4,834 GBP at Queensmith · As of October 28, 2026
View at Queensmith

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 2538469749. Listed at 22 retailers as of November 2, 2026, with a 117% 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
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2538469749
Dimensions6.85 × 6.81 × 4.21 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.85 mm6.81 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2538469749
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.6%

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 6
Current: £4,834 GBP|Low: £2,104 GBP|High: £4,853 GBP|Avg: £3,110 GBP|+2.2%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 9£2,104 GBP
Retailer 6£2,197 GBP
Retailer 2£2,456 GBP
Retailer 3£2,474 GBP
Retailer 10£2,524 GBP
Retailer 5£2,841 GBP
Retailer 11£2,929 GBP
Retailer 4£3,189 GBP
Retailer 8£3,361 GBP
Retailer 7£4,574 GBP
Queensmith£4,834 GBP

33 data points across 11 retailers

22 retailers£2,104 GBP to £4,574 GBP

A
Cheapest Retailer
-
£2,104 GBP
A
Retailer 2
-
£2,197 GBP
View
B+
Retailer 3
-
£2,456 GBP
View
B+
Retailer 4
-
£2,474 GBP
View
Retailer 5
-
£2,498 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£2,524 GBP
View
Final sale: no returns
B+
Retailer 7
-
£2,563 GBP
View
B+
Retailer 8
-
£2,566 GBP
View
Retailer 9
-
£2,655 GBP
View
Price last confirmed 10 days ago
Retailer 10
-
£2,735 GBP
View
Price last confirmed 25 days ago
Retailer 11
-
£2,735 GBP
View
Price last confirmed 39 days ago
B+
Retailer 12
-
£2,742 GBP
View
B+
Retailer 13
-
£2,841 GBP
View
B
Retailer 14
-
£2,844 GBP
View
Retailer 15
-
£2,929 GBP
View
Price last confirmed 29 days ago
Retailer 16
-
£3,156 GBP
View
Price last confirmed 38 days ago
B+
Retailer 17
-
£3,189 GBP
View
B
Retailer 18
-
£3,361 GBP
View
B
Retailer 19
-
£4,574 GBP
View
Retailer 20
-
£4,765 GBP
View
Price last confirmed 34 days ago
Retailer 21
-
£4,765 GBP
View
Price last confirmed 41 days ago
Most Expensive
Queensmith
2538469749 · Oct 28
£4,834 GBP
View
Price last confirmed 9 days ago
21 more retailers have this diamond
Prices start from £2,104 GBPSave up to £2,470 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
£2,104 GBP