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Round|Lab Grown|IGI

1.39ct E SI1 Round Lab Grown Diamond

VG • E/SI1 • IGI LG710541146

Shape and cutting style on the report: Round brilliant

Certificate IGI LG710541146

Diamond specifications and retailer prices

From $176 USD
As of October 29, 2026
Save $914 USD (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,090 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.39ct lab-grown round diamond

This 1.39ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG710541146 or 710541146. Listed at 13 retailers as of October 29, 2026, with prices from $176 to $1,090, a $914 spread on the same certified stone. Brilliant Earth lists it at $1,090. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.39
Carat
E
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.7°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG710541146
Dimensions7.10 × 7.03 × 4.42 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
7.10 mm7.03 mm1.39 ctE / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG710541146
Side View
Table 61.0%Crown 38.7°Girdle: MediumPavilion 41.1°Culet: NoneDepth 62.5%

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: $1,090 USD|Low: $176 USD|High: $1,130 USD|Avg: $501 USD|-2.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 5$176 USD
Retailer 6$197 USD
Retailer 4$226 USD
Retailer 7$374 USD
Retailer 10$388 USD
Retailer 2$390 USD
Retailer 9$471 USD
Retailer 8$473 USD
Retailer 12$510 USD
Retailer 3$593 USD
Retailer 11$1,057 USD
Brilliant Earth$1,090 USD

39 data points across 12 retailers

13 retailers$176 USD to $1,090 USD

A
Cheapest Retailer
-
$176 USD
A
Retailer 2
-
$197 USD
View
Final sale: no returns
A
Retailer 3
-
$226 USD
View
A
Retailer 4
-
$374 USD
€356 EUR
View
B+
Retailer 5
-
$388 USD
View
B+
Retailer 6
-
$390 USD
£307 GBP
View
B+
Retailer 7
-
$471 USD
View
B+
Retailer 8
-
$473 USD
View
B+
Retailer 9
-
$510 USD
View
B
Retailer 10
-
$593 USD
View
Retailer 11
-
$600 USD
View
Price last confirmed 45 days ago
B
Retailer 12
-
$1,057 USD
£832 GBP
View
Most Expensive
B
Brilliant Earth
17097807A · Oct 29
$1,090 USD
View
12 more retailers have this diamond
Prices start from $176 USDSave up to $914 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
1.39ct Round
$176 USD