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Round|Natural|GIA

1.20ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 5566279707

Certificate GIA 5566279707

Diamond specifications and retailer prices

From €2,236 EUR
As of November 6, 2026
Save €2,734 EUR (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €5,545 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5566279707. Listed at 22 retailers as of November 2, 2026, with a 122% 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
SymmetryVery Good
FluorescenceFaint
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5566279707
Dimensions6.75 × 6.70 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Indented Natural, Natural, Extra Facet
Top View
6.75 mm6.70 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5566279707
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.9%

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: €5,545 EUR|Low: €2,236 EUR|High: €5,562 EUR|Avg: €3,519 EUR|+2.7%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9€2,236 EUR
Retailer 3€2,323 EUR
Retailer 7€2,613 EUR
Retailer 10€2,750 EUR
Retailer 4€2,844 EUR
Retailer 5€3,038 EUR
Retailer 2€3,472 EUR
Retailer 6€3,627 EUR
Retailer 8€4,970 EUR
Queensmith€5,545 EUR

24 data points across 10 retailers

22 retailers€2,236 EUR to €4,970 EUR

A
Cheapest Retailer
-
€2,236 EUR
A
Retailer 2
-
€2,323 EUR
View
A
Retailer 3
-
€2,613 EUR
View
B+
Retailer 4
-
€2,661 EUR
View
B+
Retailer 5
-
€2,743 EUR
View
Final sale: no returns
B+
Retailer 6
-
€2,750 EUR
View
B+
Retailer 7
-
€2,750 EUR
View
B+
Retailer 8
-
€2,844 EUR
View
Retailer 9
-
€2,973 EUR
View
Price last confirmed 19 days ago
Retailer 10
-
€2,973 EUR
View
Price last confirmed 25 days ago
B+
Retailer 11
-
€3,000 EUR
View
B+
Retailer 12
-
€3,038 EUR
View
Retailer 13
-
€3,086 EUR
View
Price last confirmed 22 days ago
B+
Retailer 14
-
€3,101 EUR
View
B+
Retailer 15
-
€3,115 EUR
View
Retailer 16
-
€3,187 EUR
View
Price last confirmed 33 days ago
Retailer 17
-
€3,429 EUR
View
Price last confirmed 19 days ago
B
Retailer 18
-
€3,472 EUR
View
B+
Retailer 19
-
€3,627 EUR
View
B
Retailer 20
-
€4,970 EUR
View
Retailer 21
-
€5,179 EUR
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
5566279707 · Oct 28
€5,545 EUR
£4,875 GBP
View
Price last confirmed 9 days ago
21 more retailers have this diamond
Prices start from €2,236 EURSave up to €2,734 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
€2,236 EUR