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Round|Natural|GIA

1.09ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 5516613177

Certificate GIA 5516613177

Diamond specifications and retailer prices

From €1,902 EUR
HK$16,600 HKD
As of October 31, 2026
Save €3,434 EUR (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €5,336 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 5516613177. Listed at 19 retailers as of October 30, 2026, with prices from €1,902 to €5,336, a €3,434 spread on the same certified stone. NZ Jewellers lists it at €5,336. 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
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5516613177
Dimensions6.57 × 6.53 × 4.10 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.57 mm6.53 mm1.09 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5516613177
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 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 31
Current: €2,456 EUR|Low: €1,879 EUR|High: €4,525 EUR|Avg: €2,776 EUR|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 8€1,902 EUR
Retailer 2€2,285 EUR
Retailer 11€2,356 EUR
Retailer 1€2,456 EUR
Retailer 3€2,502 EUR
Retailer 4€2,650 EUR
Retailer 5€2,712 EUR
Retailer 12€2,860 EUR
Retailer 6€2,975 EUR
Retailer 10€2,984 EUR
Retailer 7€3,137 EUR
Retailer 9€4,496 EUR

35 data points across 12 retailers

19 retailers€1,902 EUR to €5,336 EUR

A
Cheapest Retailer
-
€1,902 EUR
HK$16,600 HKD
B+
Retailer 2
-
€2,285 EUR
$2,553 USD
View
B+
Retailer 3
-
€2,356 EUR
$2,632 USD
View
Final sale: no returns
B+
Retailer 4
-
€2,448 EUR
A$4,208 AUD
View
B+
Retailer 5
-
€2,456 EUR
£2,160 GBP
View
B+
Retailer 6
-
€2,502 EUR
$2,795 USD
View
B+
Retailer 7
-
€2,552 EUR
$2,851 USD
View
B+
Retailer 8
-
€2,552 EUR
$2,851 USD
View
B+
Retailer 9
-
€2,645 EUR
SGD 3,993 SGD
View
B+
Retailer 10
-
€2,650 EUR
$2,961 USD
View
B+
Retailer 11
-
€2,679 EUR
$2,993 USD
View
B+
Retailer 12
-
€2,712 EUR
£2,386 GBP
View
Retailer 13
-
€2,860 EUR
A$4,915 AUD
View
Price last confirmed 24 days ago
B+
Retailer 14
-
€2,945 EUR
$3,290 USD
View
B+
Retailer 15
-
€2,975 EUR
View
B+
Retailer 16
-
€2,984 EUR
£2,625 GBP
View
B
Retailer 17
-
€3,137 EUR
ZAR 56,622 ZAR
View
B
Retailer 18
-
€4,496 EUR
£3,955 GBP
View
Most Expensive
B
NZ Jewellers
366bba01-81f4-4c41-a394-bec70ea15f74 · Oct 30
€5,336 EUR
$5,961 USD
View
18 more retailers have this diamond
Prices start from €1,902 EURSave up to €3,434 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
€1,902 EUR