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Round|Natural|GIA

1.09ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2556600262

Certificate GIA 2556600262

Diamond specifications and retailer prices

From $2,399 USD
As of October 28, 2026
Save $460 USD (16%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $2,859 USD at GemTrove · As of October 29, 2026
View at GemTrove

About this 1.09ct natural round diamond

This 1.09ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556600262. Listed at 6 retailers as of October 28, 2026, with prices from $2,399 to $2,859, a $460 spread on the same certified stone. GemTrove lists it at $2,859. 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
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2556600262
Dimensions6.58 × 6.53 × 4.10 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Natural
Top View
6.58 mm6.53 mm1.09 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2556600262
Side View
Table 57.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $2,859 USD|Low: $2,120 USD|High: $2,975 USD|Avg: $2,618 USD
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 28, 2026
Retailer 3$2,399 USD
Retailer 4$2,429 USD
Retailer 6$2,461 USD
Retailer 2$2,571 USD
Retailer 5$2,772 USD
GemTrove$2,859 USD

38 data points across 6 retailers

6 retailers$2,399 USD to $2,859 USD

A
Cheapest Retailer
-
$2,399 USD
A
Retailer 2
-
$2,429 USD
View
Final sale: no returns
A
Retailer 3
-
$2,461 USD
MYR 10,024 MYR
View
A
Retailer 4
-
$2,571 USD
£2,024 GBP
View
A
Retailer 5
-
$2,772 USD
SGD 3,746 SGD
View
Most Expensive
A
GemTrove
GT-N-01363343-98 · Oct 29
$2,859 USD
A$4,398 AUD
View
5 more retailers have this diamond
Prices start from $2,399 USDSave up to $460 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
$2,399 USD