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Round|Lab Grown|IGI

1.09ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG654412899

Shape and cutting style on the report: Round brilliant

Certificate IGI LG654412899

Diamond specifications and retailer prices

From $196 SGD
$153 USD
As of October 29, 2026
Save $1,140 SGD (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $8,899 SGD at Rare Carat · As of August 9, 2026
View at Rare Carat

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown 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 IGI LG654412899 or 654412899. Listed at 22 retailers as of October 29, 2026, with a 581% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG654412899
Dimensions6.60 × 6.56 × 4.08 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.60 mm6.56 mm1.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG654412899
Side View
Table 56.0%Crown 35.9°Girdle: MediumPavilion 40.5°Culet: NoneDepth 62.1%

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 29
Current: $538 SGD|Low: $154 SGD|High: $1,336 SGD|Avg: $598 SGD
Rare Carat
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
Retailer 17
October 30, 2026
Retailer 7$196 SGD
Retailer 5$219 SGD
Retailer 3$242 SGD
Retailer 15$242 SGD
Retailer 9$397 SGD
Retailer 2$422 SGD
Retailer 16$443 SGD
Retailer 11$474 SGD
Rare Carat$538 SGD
Retailer 14$559 SGD
Retailer 12$615 SGD
Retailer 13$654 SGD
Retailer 4$660 SGD
Retailer 8$781 SGD
Retailer 6$851 SGD
Retailer 10$1,141 SGD
Retailer 17$1,336 SGD

44 data points across 17 retailers

22 retailers$196 SGD to $1,336 SGD

Retailer 1
-
$194 SGD
$151 USD
Price last confirmed 38 days ago
A
Retailer 2
-
$196 SGD
$153 USD
View
A
Retailer 3
-
$219 SGD
$171 USD
View
Final sale: no returns
Retailer 4
-
$237 SGD
$185 USD
View
Price last confirmed 38 days ago
A
Retailer 5
-
$242 SGD
$189 USD
View
A
Retailer 6
-
$242 SGD
$189 USD
View
A
Retailer 7
-
$397 SGD
$310 USD
View
A
Retailer 8
-
$422 SGD
£259 GBP
View
A
Retailer 9
-
$443 SGD
$346 USD
View
B+
Retailer 10
-
$474 SGD
€352 EUR
View
B+
Retailer 11
-
$538 SGD
$420 USD
View
B+
Retailer 12
-
$559 SGD
$436 USD
View
B+
Retailer 13
-
$615 SGD
A$738 AUD
View
Retailer 14
-
$654 SGD
$510 USD
View
Price last confirmed 14 days ago
B+
Retailer 15
-
$660 SGD
$515 USD
View
Retailer 16
-
$740 SGD
$577 USD
View
Price last confirmed 38 days ago
Retailer 17
-
$774 SGD
$604 USD
View
Price last confirmed 39 days ago
B
Retailer 18
-
$781 SGD
$609 USD
View
B
Retailer 19
-
$851 SGD
$664 USD
View
B
Retailer 20
-
$1,141 SGD
£701 GBP
View
B
Retailer 21
-
$1,336 SGD
$1,043 USD
View
Most Expensive
Rare Carat
26153 · Aug 9
$8,899 SGD
$6,943 USD
View
Price under review
21 more retailers have this diamond
Prices start from $196 SGDSave up to $1,140 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
$196 SGD