Round|Natural|GIA

1.09ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2556309404

Certificate GIA 2556309404

Diamond specifications and retailer prices

From $2,168 USD
₹206,446 INR
As of November 1, 2026
Save $3,765 USD (63%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $5,933 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 2556309404. Listed at 18 retailers as of October 30, 2026, with prices from $2,168 to $5,933, a $3,765 spread on the same certified stone. NZ Jewellers lists it at $5,933. 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 angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2556309404
Dimensions6.53 × 6.57 × 4.10 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Cloud, Crystal, Indented Natural
Top View
6.53 mm6.57 mm1.09 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556309404
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°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: Nov 1
Current: $5,933 USD|Low: $2,168 USD|High: $6,146 USD|Avg: $3,259 USD|-1.8%
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
November 1, 2026
Retailer 2$2,168 USD
Retailer 8$2,542 USD
Retailer 5$2,618 USD
Retailer 4$2,644 USD
Retailer 15$2,780 USD
Retailer 7$2,838 USD
Retailer 14$2,838 USD
Retailer 16$2,947 USD
Retailer 3$2,980 USD
Retailer 10$3,016 USD
Retailer 13$3,274 USD
Retailer 6$3,315 USD
Retailer 12$3,385 USD
Retailer 11$3,488 USD
Retailer 9$4,972 USD
NZ Jewellers$5,933 USD

22 data points across 16 retailers

18 retailers$2,168 USD to $5,933 USD

A
Cheapest Retailer
-
$2,168 USD
₹206,446 INR
A
Retailer 2
-
$2,425 USD
A$3,731 AUD
View
A
Retailer 3
-
$2,542 USD
View
B+
Retailer 4
-
$2,618 USD
View
Final sale: no returns
A
Retailer 5
-
$2,644 USD
View
B+
Retailer 6
-
$2,780 USD
View
B+
Retailer 7
-
$2,838 USD
View
B+
Retailer 8
-
$2,838 USD
View
B+
Retailer 9
-
$2,947 USD
View
B+
Retailer 10
-
$2,980 USD
View
B+
Retailer 11
-
$3,016 USD
£2,374 GBP
View
Retailer 12
-
$3,265 USD
A$5,023 AUD
View
Price last confirmed 24 days ago
B+
Retailer 13
-
$3,274 USD
View
B+
Retailer 14
-
$3,315 USD
£2,610 GBP
View
B+
Retailer 15
-
$3,385 USD
€3,224 EUR
View
B+
Retailer 16
-
$3,488 USD
ZAR 56,349 ZAR
View
B
Retailer 17
-
$4,972 USD
£3,915 GBP
View
Most Expensive
B
NZ Jewellers
d2758528-3b81-4eb0-8d32-df6188cd622f · Oct 30
$5,933 USD
View
17 more retailers have this diamond
Prices start from $2,168 USDSave up to $3,765 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
$2,168 USD