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Round|Natural|GIA

1.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2557621269

Certificate GIA 2557621269

Diamond specifications and retailer prices

From €4,090 EUR
HK$35,700 HKD
As of October 31, 2026
Save €5,218 EUR (56%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €9,308 EUR at NZ Jewellers · As of October 30, 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 2557621269. Listed at 9 retailers as of October 30, 2026, with prices from €4,090 to €9,308, a €5,218 spread on the same certified stone. NZ Jewellers lists it at €9,308. 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2557621269
Dimensions7.30 × 7.36 × 4.59 mm
L/W Ratio1.01
Key to symbols
Crystal, Cloud, Needle
Top View
7.30 mm7.36 mm1.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557621269
Side View
Table 59.0%CrownGirdle: Slightly ThickPavilion 41.2°Culet: NoneDepth 62.6%

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: Oct 31
Current: €9,308 EUR|Low: €4,056 EUR|High: €9,867 EUR|Avg: €6,090 EUR|-5.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 3€4,090 EUR
Retailer 4€4,657 EUR
Retailer 9€4,719 EUR
Retailer 2€4,819 EUR
Retailer 6€5,566 EUR
Retailer 8€5,566 EUR
Retailer 5€6,116 EUR
Retailer 7€8,244 EUR
NZ Jewellers€9,308 EUR

39 data points across 9 retailers

9 retailers€4,090 EUR to €9,308 EUR

A
Cheapest Retailer
-
€4,090 EUR
HK$35,700 HKD
A
Retailer 2
-
€4,657 EUR
View
A
Retailer 3
-
€4,719 EUR
SGD 7,124 SGD
View
A
Retailer 4
-
€4,819 EUR
$5,384 USD
View
B+
Retailer 5
-
€5,566 EUR
$6,218 USD
View
B+
Retailer 6
-
€5,566 EUR
$6,218 USD
View
B+
Retailer 7
-
€6,116 EUR
View
B
Retailer 8
-
€8,244 EUR
£7,252 GBP
View
Most Expensive
B
NZ Jewellers
706c909f-4d06-495a-abc7-7b084a6df80a · Oct 30
€9,308 EUR
$10,399 USD
View
8 more retailers have this diamond
Prices start from €4,090 EURSave up to €5,218 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
1.55ct Round
€4,090 EUR