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Round|Natural|GIA

1.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2554628290

Certificate GIA 2554628290

Diamond specifications and retailer prices

From €5,846 EUR
As of November 6, 2026
Save €5,377 EUR (48%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €11,223 EUR at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2554628290. Listed at 10 retailers as of November 2, 2026, with prices from €5,846 to €11,223, a €5,377 spread on the same certified stone. NZ Jewellers lists it at €11,223. 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

1.55
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2554628290
Dimensions7.34 × 7.39 × 4.62 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Feather, Needle
Top View
7.34 mm7.39 mm1.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554628290
Side View
Table 58.0%Crown 34.5°Girdle: STK-STKPavilion 41.6°Culet: NoneDepth 62.7%

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 6
Current: €11,223 EUR|Low: €5,343 EUR|High: €11,223 EUR|Avg: €7,095 EUR
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 3€5,343 EUR
Retailer 7€5,846 EUR
Retailer 13€5,856 EUR
Retailer 9€6,198 EUR
Retailer 10€6,710 EUR
Retailer 8€6,727 EUR
Retailer 2€6,779 EUR
Retailer 5€7,307 EUR
Retailer 12€7,512 EUR
Retailer 6€7,552 EUR
Retailer 4€8,509 EUR
Retailer 11€9,447 EUR
NZ Jewellers€11,223 EUR

14 data points across 13 retailers

10 retailers€5,846 EUR to €11,223 EUR

Retailer 1
-
€5,343 EUR
Price last confirmed 20 days ago
B+
Retailer 2
-
€5,846 EUR
View
B+
Retailer 3
-
€6,198 EUR
View
B+
Retailer 4
-
€6,710 EUR
View
B+
Retailer 5
-
€6,727 EUR
View
B
Retailer 6
-
€6,779 EUR
View
B
Retailer 7
-
€7,512 EUR
View
B+
Retailer 8
-
€7,552 EUR
View
B
Retailer 9
-
€9,447 EUR
View
Most Expensive
B
NZ Jewellers
487b5f42-6e04-4b45-8b32-98f9a897b104 · Nov 2
€11,223 EUR
$12,530 USD
View
9 more retailers have this diamond
Prices start from €5,846 EURSave up to €5,377 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+
1.55ct Round
€5,846 EUR