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Oval|Lab Grown|IGI

1.09ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG770640922

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG770640922

Diamond specifications and retailer prices

From $178 USD
As of October 29, 2026
Save $944 USD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,122 USD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

About this 1.09ct lab-grown oval diamond

This 1.09ct lab-grown oval 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 LG770640922 or 770640922. Listed at 19 retailers as of October 28, 2026, with prices from $178 to $1,122, a $944 spread on the same certified stone. Reve Diamonds lists it at $1,122. 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 angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770640922
Dimensions8.51 × 5.85 × 3.52 mm
L/W Ratio1.45
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
8.51 mm5.85 mm1.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770640922
Side View
Table 62.0%Crown 34.3°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 60.2%

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: $396 USD|Low: $139 USD|High: $1,122 USD|Avg: $517 USD|+5.6%
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
Retailer 16
Reve Diamonds
October 30, 2026
Retailer 5$178 USD
Retailer 3$199 USD
Retailer 11$206 USD
Retailer 7$220 USD
Retailer 16$220 USD
Retailer 13$339 USD
Retailer 15$391 USD
Retailer 1$396 USD
Retailer 10$422 USD
Retailer 14$463 USD
Retailer 12$499 USD
Retailer 2$579 USD
Retailer 8$590 USD
Retailer 4$708 USD
Retailer 6$762 USD
Retailer 9$1,035 USD
Reve Diamonds$1,122 USD

45 data points across 17 retailers

19 retailers$178 USD to $1,122 USD

Retailer 1
-
$176 USD
Price last confirmed 38 days ago
A
Retailer 2
-
$178 USD
View
A
Retailer 3
-
$199 USD
View
Final sale: no returns
A
Retailer 4
-
$206 USD
View
Retailer 5
-
$216 USD
View
Price last confirmed 38 days ago
A
Retailer 6
-
$220 USD
View
A
Retailer 7
-
$220 USD
View
A
Retailer 8
-
$339 USD
View
A
Retailer 9
-
$391 USD
View
A
Retailer 10
-
$396 USD
£312 GBP
View
B+
Retailer 11
-
$422 USD
€402 EUR
View
B+
Retailer 12
-
$463 USD
View
B+
Retailer 13
-
$499 USD
A$768 AUD
View
B
Retailer 14
-
$579 USD
View
B+
Retailer 15
-
$590 USD
View
B
Retailer 16
-
$708 USD
View
B
Retailer 17
-
$762 USD
View
B
Retailer 18
-
$1,035 USD
£815 GBP
View
Most Expensive
B
Reve Diamonds
050915544 · Oct 28
$1,122 USD
View
18 more retailers have this diamond
Prices start from $178 USDSave up to $944 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 Oval
$178 USD