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Round|Lab Grown|IGI

1.09ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG689502441

Shape and cutting style on the report: Round brilliant

Certificate IGI LG689502441

Diamond specifications and retailer prices

From $147 USD
As of October 29, 2026
Save $709 USD (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $856 USD at MOH London · As of October 29, 2026
View at MOH London

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 LG689502441 or 689502441. Listed at 18 retailers as of October 29, 2026, with prices from $147 to $856, a $709 spread on the same certified stone. MOH London lists it at $856. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689502441
Dimensions6.57 × 6.59 × 4.09 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.57 mm6.59 mm1.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689502441
Side View
Table 56.0%Crown 34.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.2%

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: $856 USD|Low: $141 USD|High: $861 USD|Avg: $361 USD|+0.6%
MOH London
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
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Retailer 16
October 29, 2026
Retailer 15$147 USD
Retailer 3$164 USD
Retailer 5$170 USD
Retailer 8$182 USD
Retailer 16$182 USD
Retailer 7$245 USD
Retailer 2$313 USD
Retailer 10$317 USD
Retailer 9$357 USD
Retailer 14$400 USD
Retailer 13$460 USD
Retailer 12$466 USD
Retailer 4$504 USD
Retailer 11$510 USD
Retailer 6$585 USD
MOH London$856 USD

44 data points across 16 retailers

18 retailers$147 USD to $856 USD

A
Cheapest Retailer
-
$147 USD
A
Retailer 2
-
$164 USD
View
Final sale: no returns
A
Retailer 3
-
$170 USD
View
A
Retailer 4
-
$182 USD
View
A
Retailer 5
-
$182 USD
View
B+
Retailer 6
-
$245 USD
View
A
Retailer 7
-
$308 USD
View
A
Retailer 8
-
$313 USD
£246 GBP
View
A
Retailer 9
-
$317 USD
€302 EUR
View
A
Retailer 10
-
$357 USD
£281 GBP
View
B+
Retailer 11
-
$400 USD
View
Price last confirmed 15 days ago
B+
Retailer 12
-
$460 USD
A$708 AUD
View
B
Retailer 13
-
$466 USD
View
B+
Retailer 14
-
$504 USD
View
B+
Retailer 15
-
$510 USD
View
B
Retailer 16
-
$559 USD
View
Price last confirmed 43 days ago
B
Retailer 17
-
$585 USD
View
Most Expensive
B
MOH London
LG689502441 · Oct 29
$856 USD
£674 GBP
View
17 more retailers have this diamond
Prices start from $147 USDSave up to $709 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
$147 USD