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1.29ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG589323095

Shape and cutting style on the report: Round brilliant

Certificate IGI LG589323095

Diamond specifications and retailer prices

From $336 USD
As of November 5, 2026
Save $570 USD (63%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $906 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.29ct lab-grown round diamond

This 1.29ct 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 top-tier cut grade and certified by IGI LG589323095 or 589323095. Listed at 8 retailers as of November 4, 2026, with prices from $336 to $906, a $570 spread on the same certified stone. MOH London lists it at $906. 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

1.29
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG589323095
Dimensions6.99 × 6.97 × 4.31 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
6.99 mm6.97 mm1.29 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG589323095
Side View
Table 59.0%Crown 35.2°Girdle: MediumPavilion 41.3°Culet: NoneDepth 61.7%

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: Nov 5
Current: $906 USD|Low: $310 USD|High: $1,030 USD|Avg: $553 USD|+2.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 2$336 USD
Retailer 6$353 USD
Retailer 7$382 USD
Retailer 3$410 USD
Retailer 5$460 USD
Retailer 8$465 USD
Retailer 4$659 USD
MOH London$906 USD
Retailer 9$1,030 USD

31 data points across 9 retailers

8 retailers$336 USD to $906 USD

Retailer 1
-
$187 USD
Price last confirmed 29 days ago
A
Retailer 2
-
$336 USD
View
B+
Retailer 3
-
$353 USD
View
A
Retailer 4
-
$410 USD
View
B+
Retailer 5
-
$460 USD
View
B+
Retailer 6
-
$465 USD
View
B
Retailer 7
-
$659 USD
View
Most Expensive
B
MOH London
LG589323095 · Nov 4
$906 USD
£713 GBP
View
7 more retailers have this diamond
Prices start from $336 USDSave up to $570 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
1.29ct Round
$336 USD