Round|Natural|GIA

1.20ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1548587129

Certificate GIA 1548587129

Diamond specifications and retailer prices

From €2,650 EUR
As of November 4, 2026
Save €2,334 EUR (47%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €6,011 EUR 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1548587129. Listed at 23 retailers as of November 4, 2026, with a 88% 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
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1548587129
Dimensions6.78 × 6.75 × 4.22 mm
L/W Ratio1.00
Girdle conditionSlightly Thick
Key to symbols
Crystal, Feather, Needle
Top View
6.78 mm6.75 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1548587129
Side View
Table 58.0%Crown 35.5°Girdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.4%

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 4
Current: €3,897 EUR|Low: €2,650 EUR|High: €5,838 EUR|Avg: €3,670 EUR|+13.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 4€2,650 EUR
Retailer 9€2,670 EUR
Retailer 8€2,742 EUR
Retailer 2€3,058 EUR
Retailer 7€3,695 EUR
Retailer 3€3,772 EUR
Retailer 1€3,897 EUR
Retailer 6€4,187 EUR
Retailer 5€5,799 EUR

42 data points across 9 retailers

23 retailers€2,650 EUR to €4,984 EUR

B+
Cheapest Retailer
-
€2,650 EUR
B+
Retailer 2
-
€2,670 EUR
View
B+
Retailer 3
-
€2,696 EUR
View
B+
Retailer 4
-
€2,742 EUR
View
Final sale: no returns
Retailer 5
-
€2,774 EUR
View
Price last confirmed 18 days ago
B+
Retailer 6
-
€2,968 EUR
View
Retailer 7
-
€3,009 EUR
View
Price last confirmed 16 days ago
Retailer 8
-
€3,058 EUR
View
Retailer 9
-
€3,126 EUR
View
Price last confirmed 22 days ago
Retailer 10
-
€3,126 EUR
View
Price last confirmed 18 days ago
Retailer 11
-
€3,246 EUR
View
Price last confirmed 23 days ago
B
Retailer 12
-
€3,398 EUR
View
B
Retailer 13
-
€3,398 EUR
View
Retailer 14
-
€3,606 EUR
View
Price last confirmed 17 days ago
Retailer 15
-
€3,695 EUR
View
Price last confirmed 30 days ago
B+
Retailer 16
-
€3,772 EUR
View
B
Retailer 17
-
€3,897 EUR
View
Retailer 18
-
€3,905 EUR
View
Price last confirmed 23 days ago
B
Retailer 19
-
€4,056 EUR
View
Retailer 20
-
€4,187 EUR
View
Price last confirmed 21 days ago
B
Retailer 21
-
€4,984 EUR
View
Retailer 22
-
€5,799 EUR
View
Price last confirmed 17 days ago
Most Expensive
NZ Jewellers
0a40bb14-684d-41c6-873e-4e48ee2e3721 · Oct 20
€6,011 EUR
$6,711 USD
View
Price last confirmed 18 days ago
22 more retailers have this diamond
Prices start from €2,650 EURSave up to €2,334 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.

B+
1.20ct Round
€2,650 EUR