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Round|Natural|GIA

1.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6531188321

Certificate GIA 6531188321

Diamond specifications and retailer prices

From €6,487 EUR
$7,247 USD
As of October 30, 2026
Save €8,147 EUR (56%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: €14,634 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 6531188321. Listed at 27 retailers as of October 30, 2026, with prices from €6,487 to €14,634, a €8,147 spread on the same certified stone. NZ Jewellers lists it at €14,634. 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 angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6531188321
Dimensions7.36 × 7.34 × 4.56 mm
L/W Ratio1.00
Top View
7.36 mm7.34 mm1.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6531188321
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.1%

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 30
Current: €8,115 EUR|Low: €6,403 EUR|High: €12,341 EUR|Avg: €8,957 EUR|+0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 7€6,487 EUR
Retailer 6€7,020 EUR
Retailer 4€8,084 EUR
Retailer 1€8,115 EUR
Retailer 2€9,118 EUR
Retailer 8€9,632 EUR
Retailer 5€10,559 EUR
Retailer 3€12,210 EUR

43 data points across 8 retailers

27 retailers€6,487 EUR to €14,634 EUR

B+
Cheapest Retailer
-
€6,487 EUR
$7,247 USD
B+
Retailer 2
-
€6,634 EUR
$7,412 USD
View
B+
Retailer 3
-
€6,835 EUR
A$11,748 AUD
View
B+
Retailer 4
-
€6,850 EUR
$7,653 USD
View
B+
Retailer 5
-
€7,020 EUR
$7,843 USD
View
Final sale: no returns
B+
Retailer 6
-
€7,047 EUR
$7,873 USD
View
B+
Retailer 7
-
€7,191 EUR
CA$11,158 CAD
View
B+
Retailer 8
-
€7,282 EUR
$8,135 USD
View
B+
Retailer 9
-
€7,316 EUR
$8,174 USD
View
B
Retailer 10
-
€7,798 EUR
$8,712 USD
View
B
Retailer 11
-
€7,927 EUR
$8,856 USD
View
B
Retailer 12
-
€8,049 EUR
$8,992 USD
View
Retailer 13
-
€8,084 EUR
A$13,895 AUD
View
Price last confirmed 8 days ago
B+
Retailer 14
-
€8,115 EUR
£7,139 GBP
View
B
Retailer 15
-
€8,120 EUR
$9,072 USD
View
B
Retailer 16
-
€8,410 EUR
$9,396 USD
View
B
Retailer 17
-
€8,673 EUR
$9,690 USD
View
B
Retailer 18
-
€8,673 EUR
$9,690 USD
View
B
Retailer 19
-
€8,869 EUR
$9,908 USD
View
B
Retailer 20
-
€8,960 EUR
$10,010 USD
View
B
Retailer 21
-
€9,118 EUR
View
B
Retailer 22
-
€9,146 EUR
$10,218 USD
View
B
Retailer 23
-
€9,339 EUR
$10,434 USD
View
Retailer 24
-
€9,632 EUR
$10,761 USD
View
Price last confirmed 9 days ago
B
Retailer 25
-
€10,559 EUR
ZAR 190,574 ZAR
View
Price last confirmed 10 days ago
B
Retailer 26
-
€12,210 EUR
£10,741 GBP
View
Most Expensive
B
NZ Jewellers
bad8d0d6-c1c9-4c6b-977e-f24c51c588e1 · Oct 30
€14,634 EUR
$16,349 USD
View
26 more retailers have this diamond
Prices start from €6,487 EURSave up to €8,147 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
€6,487 EUR