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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 $2,125 USD
HK$16,600 HKD
As of October 31, 2026
Save $3,836 USD (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $5,961 USD 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 $2,125 to $5,961, a $3,836 spread on the same certified stone. NZ Jewellers lists it at $5,961. 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: $2,744 USD|Low: $2,099 USD|High: $5,056 USD|Avg: $3,102 USD|-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$2,125 USD
Retailer 2$2,553 USD
Retailer 11$2,632 USD
Retailer 1$2,744 USD
Retailer 3$2,795 USD
Retailer 4$2,961 USD
Retailer 5$3,030 USD
Retailer 12$3,195 USD
Retailer 6$3,323 USD
Retailer 10$3,334 USD
Retailer 7$3,505 USD
Retailer 9$5,023 USD

35 data points across 12 retailers

19 retailers$2,125 USD to $5,961 USD

A
Cheapest Retailer
-
$2,125 USD
HK$16,600 HKD
B+
Retailer 2
-
$2,553 USD
View
B+
Retailer 3
-
$2,632 USD
View
Final sale: no returns
B+
Retailer 4
-
$2,735 USD
A$4,208 AUD
View
B+
Retailer 5
-
$2,744 USD
£2,160 GBP
View
B+
Retailer 6
-
$2,795 USD
View
B+
Retailer 7
-
$2,851 USD
View
B+
Retailer 8
-
$2,851 USD
View
B+
Retailer 9
-
$2,955 USD
SGD 3,993 SGD
View
B+
Retailer 10
-
$2,961 USD
View
B+
Retailer 11
-
$2,993 USD
View
B+
Retailer 12
-
$3,030 USD
£2,386 GBP
View
Retailer 13
-
$3,195 USD
A$4,915 AUD
View
Price last confirmed 24 days ago
B+
Retailer 14
-
$3,290 USD
View
B+
Retailer 15
-
$3,323 USD
€3,165 EUR
View
B+
Retailer 16
-
$3,334 USD
£2,625 GBP
View
B
Retailer 17
-
$3,505 USD
ZAR 56,622 ZAR
View
B
Retailer 18
-
$5,023 USD
£3,955 GBP
View
Most Expensive
B
NZ Jewellers
366bba01-81f4-4c41-a394-bec70ea15f74 · Oct 30
$5,961 USD
View
18 more retailers have this diamond
Prices start from $2,125 USDSave up to $3,836 USD

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
$2,125 USD