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Round|Natural|GIA

1.20ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 7556731232

Certificate GIA 7556731232

Diamond specifications and retailer prices

From £1,903 GBP
As of November 6, 2026
Save £2,495 GBP (57%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £4,663 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 7556731232. Listed at 23 retailers as of November 5, 2026, with a 131% 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
FluorescenceFaint
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 7556731232
Dimensions6.90 × 6.92 × 4.10 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
6.90 mm6.92 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7556731232
Side View
Table 62.0%Crown 33°Girdle: MED-STKPavilion 41°Culet: NoneDepth 59.4%

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 6
Current: £4,663 GBP|Low: £1,903 GBP|High: £4,663 GBP|Avg: £2,982 GBP
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 3£1,903 GBP
Retailer 2£1,973 GBP
Retailer 17£2,271 GBP
Retailer 14£2,386 GBP
Retailer 10£2,415 GBP
Retailer 4£2,524 GBP
Retailer 6£2,524 GBP
Retailer 12£2,595 GBP
Retailer 5£2,621 GBP
Retailer 11£2,646 GBP
Retailer 7£2,909 GBP
Retailer 8£2,912 GBP
Retailer 15£2,936 GBP
Retailer 13£3,080 GBP
Retailer 16£4,209 GBP
Retailer 9£4,397 GBP
Queensmith£4,663 GBP

22 data points across 17 retailers

23 retailers£1,903 GBP to £4,397 GBP

A
Cheapest Retailer
-
£1,903 GBP
A
Retailer 2
-
£1,973 GBP
View
B+
Retailer 3
-
£2,259 GBP
View
B+
Retailer 4
-
£2,271 GBP
View
B+
Retailer 5
-
£2,298 GBP
View
B+
Retailer 6
-
£2,329 GBP
View
Final sale: no returns
B+
Retailer 7
-
£2,335 GBP
View
B+
Retailer 8
-
£2,338 GBP
View
B+
Retailer 9
-
£2,386 GBP
View
B+
Retailer 10
-
£2,415 GBP
View
B+
Retailer 11
-
£2,524 GBP
View
Retailer 12
-
£2,524 GBP
View
Price last confirmed 8 days ago
B+
Retailer 13
-
£2,595 GBP
View
B+
Retailer 14
-
£2,621 GBP
View
B+
Retailer 15
-
£2,631 GBP
View
B+
Retailer 16
-
£2,646 GBP
View
Retailer 17
-
£2,696 GBP
View
Price last confirmed 30 days ago
B+
Retailer 18
-
£2,912 GBP
View
B+
Retailer 19
-
£2,936 GBP
View
B+
Retailer 20
-
£3,080 GBP
View
B
Retailer 21
-
£4,209 GBP
View
B
Retailer 22
-
£4,397 GBP
View
Most Expensive
Queensmith
7556731232 · Oct 28
£4,663 GBP
View
Price last confirmed 9 days ago
22 more retailers have this diamond
Prices start from £1,903 GBPSave up to £2,495 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
£1,903 GBP