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Round|Lab Grown|IGI

1.09ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG689560534

Shape and cutting style on the report: Round brilliant

Certificate IGI LG689560534

Diamond specifications and retailer prices

From $153 USD
As of October 29, 2026
Save $890 USD (85%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,043 USD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

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 LG689560534 or 689560534. Listed at 20 retailers as of October 28, 2026, with prices from $153 to $1,043, a $890 spread on the same certified stone. Reve Diamonds lists it at $1,043. 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
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689560534
Dimensions6.64 × 6.66 × 4.00 mm
L/W Ratio1.00
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
6.64 mm6.66 mm1.09 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689560534
Side View
Table 61.0%Crown 34°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.1%

Caratlytics Score

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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: $328 USD|Low: $120 USD|High: $1,043 USD|Avg: $452 USD|+7.2%
Retailer 1
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
Reve Diamonds
October 29, 2026
Retailer 4$153 USD
Retailer 2$171 USD
Retailer 12$189 USD
Retailer 14$189 USD
Retailer 7$310 USD
Retailer 1$328 USD
Retailer 13$346 USD
Retailer 9$370 USD
Retailer 11$436 USD
Retailer 10$499 USD
Retailer 6$510 USD
Retailer 15$515 USD
Retailer 5$609 USD
Retailer 3$664 USD
Retailer 8$890 USD
Reve Diamonds$1,043 USD

43 data points across 16 retailers

20 retailers$153 USD to $1,043 USD

A
Retailer 1
-
$151 USD
Price last confirmed 37 days ago
A
Retailer 2
-
$153 USD
View
A
Retailer 3
-
$171 USD
View
Final sale: no returns
A
Retailer 4
-
$176 USD
View
Price last confirmed 37 days ago
A
Retailer 5
-
$185 USD
View
Price last confirmed 37 days ago
A
Retailer 6
-
$189 USD
View
A
Retailer 7
-
$189 USD
View
A
Retailer 8
-
$310 USD
View
A
Retailer 9
-
$328 USD
£259 GBP
View
B+
Retailer 10
-
$346 USD
View
B+
Retailer 11
-
$370 USD
€352 EUR
View
B+
Retailer 12
-
$436 USD
View
B
Retailer 13
-
$499 USD
A$768 AUD
View
B+
Retailer 14
-
$510 USD
View
B
Retailer 15
-
$515 USD
View
B
Retailer 16
-
$604 USD
View
Price last confirmed 38 days ago
B
Retailer 17
-
$609 USD
View
B
Retailer 18
-
$664 USD
View
B
Retailer 19
-
$890 USD
£701 GBP
View
Most Expensive
B
Reve Diamonds
8D9EC4786 · Oct 28
$1,043 USD
View
19 more retailers have this diamond
Prices start from $153 USDSave up to $890 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
$153 USD