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1.20ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG729562359

Shape and cutting style on the report: Round brilliant

Certificate IGI LG729562359

Diamond specifications and retailer prices

From €570 EUR
$640 USD
As of November 5, 2026
1 retailer carries this diamond
Only listing: €570 EUR at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1.2ct lab-grown round diamond

This 1.2ct 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 LG729562359 or 729562359. Listed at a single retailer as of November 5, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.20
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729562359
Dimensions6.77 × 6.74 × 4.23 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.77 mm6.74 mm1.20 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729562359
Side View
Table 57.0%Crown 36°Girdle: MediumPavilion 41.1°Culet: NoneDepth 62.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: €570 EUR|Low: €175 EUR|High: €1,025 EUR|Avg: €566 EUR|-41.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
April 14, 2026
Retailer 3€176 EUR
Retailer 2€302 EUR
Retailer 7€414 EUR
Retailer 4€449 EUR
Retailer 5€455 EUR
Retailer 10€486 EUR
Retailer 8€519 EUR
Brilliant Earth€570 EUR
Retailer 6€602 EUR
Retailer 9€645 EUR

53 data points across 10 retailers

1 retailer

B
Brilliant Earth
17180198A · Nov 5
€570 EUR
$640 USD
View

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
1.20ct Round
€570 EUR