Round|Natural|GIA

1.20ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2556151106

Certificate GIA 2556151106

Diamond specifications and retailer prices

From €1,777 EUR
As of November 6, 2026
Save €2,312 EUR (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €5,045 EUR 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556151106. Listed at 19 retailers as of November 4, 2026, with a 130% 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
FluorescenceFaint
Crown angle36.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2556151106
Dimensions6.74 × 6.79 × 4.26 mm
L/W Ratio1.01
Top View
6.74 mm6.79 mm1.20 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556151106
Side View
Table 57.0%Crown 36.5°Girdle: THN-STKPavilion 41.2°Culet: NoneDepth 62.9%

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: €5,045 EUR|Low: €1,765 EUR|High: €5,062 EUR|Avg: €2,745 EUR|+3.0%
Queensmith
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 3€1,777 EUR
Retailer 2€1,850 EUR
Retailer 8€2,073 EUR
Retailer 12€2,159 EUR
Retailer 4€2,365 EUR
Retailer 11€2,391 EUR
Retailer 6€2,461 EUR
Retailer 10€2,466 EUR
Retailer 5€2,472 EUR
Retailer 7€2,899 EUR
Retailer 9€4,089 EUR
Queensmith€5,045 EUR

36 data points across 12 retailers

19 retailers€1,777 EUR to €4,089 EUR

A
Cheapest Retailer
-
€1,777 EUR
A
Retailer 2
-
€1,850 EUR
View
A
Retailer 3
-
€2,073 EUR
View
A
Retailer 4
-
€2,159 EUR
View
Final sale: no returns
A
Retailer 5
-
€2,202 EUR
View
Retailer 6
-
€2,365 EUR
View
Price last confirmed 39 days ago
Retailer 7
-
€2,365 EUR
View
Price last confirmed 21 days ago
Retailer 8
-
€2,365 EUR
View
Price last confirmed 17 days ago
A
Retailer 9
-
€2,391 EUR
View
Retailer 10
-
€2,455 EUR
View
Price last confirmed 38 days ago
A
Retailer 11
-
€2,461 EUR
View
B+
Retailer 12
-
€2,466 EUR
View
B+
Retailer 13
-
€2,472 EUR
View
Retailer 14
-
€2,728 EUR
View
Price last confirmed 38 days ago
B+
Retailer 15
-
€2,899 EUR
View
B
Retailer 16
-
€4,089 EUR
View
Retailer 17
-
€4,942 EUR
View
Price last confirmed 20 days ago
Retailer 18
-
€4,942 EUR
View
Price last confirmed 39 days ago
Most Expensive
Queensmith
2556151106 · Oct 28
€5,045 EUR
£4,435 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from €1,777 EURSave up to €2,312 EUR

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
€1,777 EUR