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Round|Natural|GIA

1.20ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 5543335043

Certificate GIA 5543335043

Diamond specifications and retailer prices

From £2,063 GBP
As of November 6, 2026
Save £2,644 GBP (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £4,793 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5543335043. Listed at 20 retailers as of November 5, 2026, with a 128% 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 5543335043
Dimensions6.82 × 6.78 × 4.23 mm
L/W Ratio1.01
Top View
6.82 mm6.78 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5543335043
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.2%

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: £4,793 GBP|Low: £2,063 GBP|High: £4,812 GBP|Avg: £3,140 GBP|+2.6%
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
November 6, 2026
Retailer 4£2,063 GBP
Retailer 10£2,143 GBP
Retailer 11£2,401 GBP
Retailer 15£2,446 GBP
Retailer 2£2,585 GBP
Retailer 3£2,702 GBP
Retailer 7£2,702 GBP
Retailer 12£2,779 GBP
Retailer 14£2,806 GBP
Retailer 8£2,863 GBP
Retailer 5£3,118 GBP
Retailer 9£3,145 GBP
Retailer 13£4,506 GBP
Retailer 6£4,707 GBP
Queensmith£4,793 GBP

25 data points across 15 retailers

20 retailers£2,063 GBP to £4,707 GBP

A
Cheapest Retailer
-
£2,063 GBP
A
Retailer 2
-
£2,143 GBP
View
A
Retailer 3
-
£2,401 GBP
View
A
Retailer 4
-
£2,446 GBP
View
A
Retailer 5
-
£2,493 GBP
View
Final sale: no returns
A
Retailer 6
-
£2,528 GBP
View
A
Retailer 7
-
£2,585 GBP
View
Retailer 8
-
£2,702 GBP
View
Price last confirmed 12 days ago
B+
Retailer 9
-
£2,702 GBP
View
A
Retailer 10
-
£2,779 GBP
View
B+
Retailer 11
-
£2,806 GBP
View
B+
Retailer 12
-
£2,809 GBP
View
B+
Retailer 13
-
£2,863 GBP
View
B+
Retailer 14
-
£2,894 GBP
View
B+
Retailer 15
-
£3,118 GBP
View
B+
Retailer 16
-
£3,145 GBP
View
B
Retailer 17
-
£4,506 GBP
View
B
Retailer 18
-
£4,707 GBP
View
Retailer 19
-
£4,707 GBP
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
5543335043 · Oct 28
£4,793 GBP
View
Price last confirmed 8 days ago
19 more retailers have this diamond
Prices start from £2,063 GBPSave up to £2,644 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
£2,063 GBP