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Round|Natural|GIA

1.20ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1533924090

Certificate GIA 1533924090

Diamond specifications and retailer prices

From £1,531 GBP
As of November 6, 2026
Save £2,092 GBP (58%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £4,323 GBP at NZ Jewellers · As of October 17, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1533924090. Listed at 20 retailers as of November 1, 2026, with a 137% 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1533924090
Dimensions6.90 × 6.86 × 4.10 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cavity, Feather, Cloud, Indented Natural, Needle
Top View
6.90 mm6.86 mm1.20 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1533924090
Side View
Table 62.0%Crown 33.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 59.5%

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: £1,591 GBP|Low: £1,531 GBP|High: £4,283 GBP|Avg: £2,446 GBP|-5.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 12£1,531 GBP
Retailer 1£1,591 GBP
Retailer 8£1,833 GBP
Retailer 10£1,858 GBP
Retailer 4£1,915 GBP
Retailer 11£2,058 GBP
Retailer 5£2,118 GBP
Retailer 9£2,118 GBP
Retailer 6£2,128 GBP
Retailer 7£2,501 GBP
Retailer 2£3,623 GBP
Retailer 3£4,274 GBP

35 data points across 12 retailers

20 retailers£1,531 GBP to £3,623 GBP

A
Cheapest Retailer
-
£1,531 GBP
A
Retailer 2
-
£1,591 GBP
View
A
Retailer 3
-
£1,833 GBP
View
A
Retailer 4
-
£1,858 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,915 GBP
View
A
Retailer 6
-
£1,947 GBP
View
B+
Retailer 7
-
£2,058 GBP
View
Retailer 8
-
£2,068 GBP
View
Price last confirmed 39 days ago
Retailer 9
-
£2,068 GBP
View
Price last confirmed 21 days ago
Retailer 10
-
£2,068 GBP
View
Price last confirmed 17 days ago
A
Retailer 11
-
£2,118 GBP
View
B+
Retailer 12
-
£2,118 GBP
View
B+
Retailer 13
-
£2,128 GBP
View
Retailer 14
-
£2,147 GBP
View
Price last confirmed 38 days ago
Retailer 15
-
£2,386 GBP
View
Price last confirmed 38 days ago
B+
Retailer 16
-
£2,501 GBP
View
B
Retailer 17
-
£3,623 GBP
View
Retailer 18
-
£4,274 GBP
View
Price last confirmed 9 days ago
Retailer 19
-
£4,323 GBP
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
d9be7301-fc6b-489b-9c07-310e44e36e8d · Oct 17
£4,323 GBP
$5,819 USD
View
Price last confirmed 20 days ago
19 more retailers have this diamond
Prices start from £1,531 GBPSave up to £2,092 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
£1,531 GBP