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Round|Natural|GIA

1.20ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1216036283

Certificate GIA 1216036283

Diamond specifications and retailer prices

From £2,172 GBP
As of November 6, 2026
Save £3,633 GBP (63%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £5,805 GBP at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

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 1216036283. Listed at 18 retailers as of November 5, 2026, with prices from £2,172 to £5,805, a £3,633 spread on the same certified stone. Diamond Quarter lists it at £5,805. 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 angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1216036283
Dimensions6.77 × 6.73 × 4.24 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Culet sizeNone
Top View
6.77 mm6.73 mm1.20 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1216036283
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

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: £2,482 GBP|Low: £1,882 GBP|High: £4,569 GBP|Avg: £2,739 GBP|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11£2,172 GBP
Retailer 6£2,199 GBP
Retailer 9£2,259 GBP
Retailer 8£2,446 GBP
Retailer 10£2,446 GBP
Retailer 2£2,457 GBP
Retailer 1£2,482 GBP
Retailer 7£2,540 GBP
Retailer 3£2,823 GBP
Retailer 4£3,141 GBP
Retailer 5£4,503 GBP

42 data points across 11 retailers

18 retailers£2,172 GBP to £5,805 GBP

A
Cheapest Retailer
-
£2,172 GBP
A
Retailer 2
-
£2,199 GBP
View
B+
Retailer 3
-
£2,259 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,291 GBP
View
Retailer 5
-
£2,446 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£2,446 GBP
View
B+
Retailer 7
-
£2,457 GBP
View
B+
Retailer 8
-
£2,482 GBP
View
B+
Retailer 9
-
£2,540 GBP
View
B+
Retailer 10
-
£2,660 GBP
View
B+
Retailer 11
-
£2,660 GBP
View
B+
Retailer 12
-
£2,749 GBP
View
B
Retailer 13
-
£2,823 GBP
View
Retailer 14
-
£3,058 GBP
View
Price last confirmed 14 days ago
B+
Retailer 15
-
£3,141 GBP
View
B
Retailer 16
-
£4,503 GBP
View
B
Retailer 17
-
£4,705 GBP
View
Most Expensive
B
Diamond Quarter
1.2SI2H1283D34AN · Nov 5
£5,805 GBP
View
17 more retailers have this diamond
Prices start from £2,172 GBPSave up to £3,633 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
£2,172 GBP