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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 $3,067 SGD
$2,399 USD
As of October 30, 2026
Save $588 SGD (16%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $3,655 SGD at GemTrove · As of October 31, 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 30, 2026, with prices from $3,067 to $3,655, a $588 spread on the same certified stone. GemTrove lists it at $3,655. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $3,655 SGD|Low: $2,710 SGD|High: $3,803 SGD|Avg: $3,338 SGD
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 3$3,067 SGD
Retailer 4$3,105 SGD
Retailer 6$3,146 SGD
Retailer 2$3,306 SGD
Retailer 5$3,544 SGD
GemTrove$3,655 SGD

39 data points across 6 retailers

6 retailers$3,067 SGD to $3,655 SGD

A
Cheapest Retailer
-
$3,067 SGD
$2,399 USD
A
Retailer 2
-
$3,105 SGD
$2,429 USD
View
Final sale: no returns
A
Retailer 3
-
$3,146 SGD
MYR 10,024 MYR
View
A
Retailer 4
-
$3,306 SGD
£2,037 GBP
View
A
Retailer 5
-
$3,544 SGD
View
Most Expensive
A
GemTrove
GT-N-01363343-98 · Oct 31
$3,655 SGD
A$4,398 AUD
View
5 more retailers have this diamond
Prices start from $3,067 SGDSave up to $588 SGD

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
$3,067 SGD