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Oval|Lab Grown|IGI

3.51ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG706528102

Shape and cutting style on the report: Oval modified brilliant

Certificate IGI LG706528102

Diamond specifications and retailer prices

From $1,858 USD
A$2,858 AUD
As of October 29, 2026
7 retailers carry this diamond
Most expensive: $2,510 USD at Rare Carat · As of September 28, 2026
View at Rare Carat

About this 3.51ct lab-grown oval diamond

This 3.51ct lab-grown oval sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG706528102 or 706528102. Listed at 7 retailers as of October 29, 2026. 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

3.51
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG706528102
Dimensions12.78 × 8.30 × 5.09 mm
L/W Ratio1.54
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.78 mm8.30 mm3.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG706528102
Side View
Table 60.0%Crown 32.4°Girdle: MED-STKPavilion 36.6°Culet: NoneDepth 61.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $2,510 USD|Low: $514 USD|High: $6,150 USD|Avg: $1,845 USD|-1.1%
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
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Retailer 19
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Retailer 21
September 29, 2026
Retailer 9$544 USD
Retailer 3$609 USD
Retailer 20$609 USD
Retailer 10$666 USD
Retailer 19$674 USD
Retailer 2$730 USD
Retailer 8$1,017 USD
Retailer 6$1,046 USD
Retailer 21$1,070 USD
Retailer 13$1,158 USD
Retailer 15$1,611 USD
Retailer 11$1,858 USD
Retailer 17$1,907 USD
Retailer 18$1,957 USD
Retailer 14$2,510 USD
Rare Carat$2,510 USD
Retailer 7$2,524 USD
Retailer 4$2,553 USD
Retailer 16$3,270 USD
Retailer 12$3,760 USD
Retailer 5$4,830 USD

7 data points across 21 retailers

7 retailers

Retailer 1
-
$544 USD
Price last confirmed 31 days ago
Retailer 2
-
$609 USD
View
Price last confirmed 33 days ago
Retailer 3
-
$666 USD
View
Price last confirmed 30 days ago
Retailer 4
-
$1,611 USD
View
Price last confirmed 31 days ago
B
Retailer 5
-
$1,858 USD
A$2,858 AUD
View
Retailer 6
-
$1,957 USD
View
Price last confirmed 32 days ago
Most Expensive
Rare Carat
V673387LG · Sep 28
$2,510 USD
View
Price last confirmed 31 days ago
6 more retailers have this diamond
Prices start from $1,858 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.

B
3.51ct Oval
$1,858 USD