Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7556359895

Certificate GIA 7556359895

Diamond specifications and retailer prices

From £2,210 GBP
As of November 6, 2026
Save £2,577 GBP (54%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: £4,787 GBP at NZ Jewellers · As of October 20, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7556359895. Listed at 28 retailers as of November 5, 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 7556359895
Dimensions6.76 × 6.80 × 4.24 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.76 mm6.80 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7556359895
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,629 GBP|Low: £2,106 GBP|High: £4,650 GBP|Avg: £2,945 GBP|-1.8%
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 2£2,210 GBP
Retailer 12£2,297 GBP
Retailer 3£2,406 GBP
Retailer 10£2,489 GBP
Retailer 1£2,629 GBP
Retailer 11£2,823 GBP
Retailer 5£2,826 GBP
Retailer 4£2,943 GBP
Retailer 8£3,164 GBP
Retailer 6£3,192 GBP
Retailer 7£3,354 GBP
Retailer 9£4,583 GBP

36 data points across 12 retailers

28 retailers£2,210 GBP to £4,787 GBP

B+
Cheapest Retailer
-
£2,210 GBP
B+
Retailer 2
-
£2,297 GBP
View
Final sale: no returns
B+
Retailer 3
-
£2,322 GBP
View
B+
Retailer 4
-
£2,406 GBP
View
Retailer 5
-
£2,489 GBP
View
Price last confirmed 8 days ago
Retailer 6
-
£2,489 GBP
View
Price last confirmed 29 days ago
Retailer 7
-
£2,489 GBP
View
Price last confirmed 29 days ago
Retailer 8
-
£2,489 GBP
View
Price last confirmed 15 days ago
B+
Retailer 9
-
£2,499 GBP
View
Retailer 10
-
£2,585 GBP
View
Price last confirmed 38 days ago
B+
Retailer 11
-
£2,629 GBP
View
B+
Retailer 12
-
£2,712 GBP
View
B+
Retailer 13
-
£2,712 GBP
View
B
Retailer 14
-
£2,802 GBP
View
B
Retailer 15
-
£2,823 GBP
View
B+
Retailer 16
-
£2,826 GBP
View
Retailer 17
-
£2,872 GBP
View
Price last confirmed 28 days ago
Retailer 18
-
£2,872 GBP
View
Price last confirmed 16 days ago
B
Retailer 19
-
£2,872 GBP
View
Retailer 20
-
£2,943 GBP
View
Price last confirmed 29 days ago
Retailer 21
-
£3,112 GBP
View
Price last confirmed 22 days ago
B+
Retailer 22
-
£3,164 GBP
View
B+
Retailer 23
-
£3,192 GBP
View
B
Retailer 24
-
£3,354 GBP
View
B
Retailer 25
-
£4,583 GBP
View
B
Retailer 26
-
£4,787 GBP
View
Retailer 27
-
£4,787 GBP
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
6cd2c71e-1897-451b-8e31-379ad3eed8b1 · Oct 20
£4,787 GBP
$6,407 USD
View
Price last confirmed 17 days ago
27 more retailers have this diamond
Prices start from £2,210 GBPSave up to £2,577 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.

B+
1.20ct Round
£2,210 GBP