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Round|Lab Grown|IGI

1.20ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG847634770

Shape and cutting style on the report: Round brilliant

Certificate IGI LG847634770

Diamond specifications and retailer prices

From $323 USD
€308 EUR
As of October 29, 2026
Save $568 USD (64%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $892 USD at MOH London · As of October 29, 2026
View at MOH London

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 LG847634770 or 847634770. Listed at 7 retailers as of October 29, 2026, with prices from $323 to $892, a $568 spread on the same certified stone. MOH London lists it at $892. 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.5°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847634770
Dimensions6.82 × 6.90 × 4.08 mm
L/W Ratio1.01
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
6.82 mm6.90 mm1.20 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG847634770
Side View
Table 63.0%Crown 35.5°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 59.4%

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: $892 USD|Low: $314 USD|High: $892 USD|Avg: $456 USD|+0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 4$323 USD
Retailer 3$330 USD
Retailer 7$346 USD
Retailer 6$362 USD
Retailer 2$370 USD
Retailer 5$644 USD
MOH London$892 USD

8 data points across 7 retailers

7 retailers$323 USD to $892 USD

A
Cheapest Retailer
-
$323 USD
€308 EUR
A
Retailer 2
-
$330 USD
£260 GBP
View
B+
Retailer 3
-
$346 USD
View
B+
Retailer 4
-
$362 USD
View
A
Retailer 5
-
$370 USD
£291 GBP
View
B
Retailer 6
-
$644 USD
View
Most Expensive
B
MOH London
LG847634770 · Oct 29
$892 USD
£702 GBP
View
6 more retailers have this diamond
Prices start from $323 USDSave up to $568 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
1.20ct Round
$323 USD