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1.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 1509366860

Certificate GIA 1509366860

Diamond specifications and retailer prices

From €7,146 EUR
$7,984 USD
As of October 31, 2026
Save €2,502 EUR (26%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €9,648 EUR at Yorxs · As of November 2, 2026
View at Yorxs

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 1509366860. Listed at 7 retailers as of October 31, 2026, with prices from €7,146 to €9,648, a €2,502 spread on the same certified stone. Yorxs lists it at €9,648. 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
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1509366860
Dimensions7.32 × 7.37 × 4.61 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
7.32 mm7.37 mm1.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1509366860
Side View
Table 59.0%Crown 35°Girdle: Slightly ThickPavilion 41.4°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: Oct 31
Current: €9,385 EUR|Low: €7,053 EUR|High: €9,691 EUR|Avg: €8,733 EUR|+1.8%
Retailer 1
Retailer 2
Retailer 3
Yorxs
November 2, 2026
Retailer 3€7,146 EUR
Retailer 2€8,973 EUR
Retailer 1€9,385 EUR
Yorxs€9,648 EUR

37 data points across 4 retailers

7 retailers€7,146 EUR to €9,648 EUR

B+
Cheapest Retailer
-
€7,146 EUR
$7,984 USD
B+
Retailer 2
-
€7,330 EUR
$8,189 USD
View
B+
Retailer 3
-
€7,788 EUR
$8,701 USD
View
B
Retailer 4
-
€8,973 EUR
$10,025 USD
View
Retailer 5
-
€8,973 EUR
$10,025 USD
View
Price last confirmed 23 days ago
B
Retailer 6
-
€9,385 EUR
£8,256 GBP
View
Most Expensive
B
Yorxs
TIM3124 · Nov 2
€9,648 EUR
View
6 more retailers have this diamond
Prices start from €7,146 EURSave up to €2,502 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
€7,146 EUR