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Round|Natural|GIA

1.09ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2554894009

Certificate GIA 2554894009

Diamond specifications and retailer prices

From €2,431 EUR
$2,716 USD
As of October 30, 2026
Save €2,790 EUR (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €5,221 EUR at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.09ct natural round diamond

This 1.09ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2554894009. Listed at 17 retailers as of October 30, 2026, with prices from €2,431 to €5,221, a €2,790 spread on the same certified stone. NZ Jewellers lists it at €5,221. 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

1.09
Carat
I
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2554894009
Dimensions6.51 × 6.56 × 4.09 mm
L/W Ratio1.01
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
6.51 mm6.56 mm1.09 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2554894009
Side View
Table 59.0%Crown 36°Girdle: Medium to Slightly ThickPavilion 41°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 30
Current: €5,221 EUR|Low: €2,233 EUR|High: €5,221 EUR|Avg: €3,018 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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 5€2,431 EUR
Retailer 15€2,435 EUR
Retailer 10€2,484 EUR
Retailer 17€2,551 EUR
Retailer 7€2,715 EUR
Retailer 16€2,715 EUR
Retailer 8€2,788 EUR
Retailer 6€2,820 EUR
Retailer 11€2,884 EUR
Retailer 9€2,999 EUR
Retailer 13€3,087 EUR
Retailer 3€3,133 EUR
Retailer 2€3,289 EUR
Retailer 4€3,476 EUR
Retailer 14€3,684 EUR
Retailer 12€5,012 EUR
NZ Jewellers€5,221 EUR

34 data points across 17 retailers

17 retailers€2,431 EUR to €5,221 EUR

B+
Cheapest Retailer
-
€2,431 EUR
$2,716 USD
A
Retailer 2
-
€2,435 EUR
$2,720 USD
View
B+
Retailer 3
-
€2,484 EUR
$2,775 USD
View
B+
Retailer 4
-
€2,551 EUR
$2,850 USD
View
B+
Retailer 5
-
€2,715 EUR
$3,033 USD
View
B+
Retailer 6
-
€2,715 EUR
$3,033 USD
View
B+
Retailer 7
-
€2,788 EUR
$3,115 USD
View
B+
Retailer 8
-
€2,820 EUR
$3,150 USD
View
B+
Retailer 9
-
€2,884 EUR
£2,537 GBP
View
Retailer 10
-
€2,999 EUR
A$5,155 AUD
View
Price last confirmed 24 days ago
B
Retailer 11
-
€3,087 EUR
£2,716 GBP
View
B
Retailer 12
-
€3,133 EUR
$3,500 USD
View
B
Retailer 13
-
€3,289 EUR
View
Retailer 14
-
€3,476 EUR
$3,883 USD
View
Price last confirmed 9 days ago
B
Retailer 15
-
€3,684 EUR
ZAR 66,489 ZAR
View
B
Retailer 16
-
€5,012 EUR
£4,409 GBP
View
Most Expensive
B
NZ Jewellers
8d2ec18a-a645-43c3-a3ed-79e9b2be2628 · Oct 30
€5,221 EUR
$5,833 USD
View
16 more retailers have this diamond
Prices start from €2,431 EURSave up to €2,790 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
1.09ct Round
€2,431 EUR