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Round|Lab Grown|IGI

1.21ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG760578387

Shape and cutting style on the report: Round brilliant

Certificate IGI LG760578387

Diamond specifications and retailer prices

From €412 EUR
A$708 AUD
As of October 31, 2026
7 retailers carry this diamond
Most expensive: €530 EUR at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1.21ct lab-grown round diamond

This 1.21ct 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 LG760578387 or 760578387. Listed at 7 retailers as of October 31, 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

1.21
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG760578387
Dimensions6.81 × 6.76 × 4.20 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.81 mm6.76 mm1.21 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG760578387
Side View
Table 60.0%Crown 36°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.9%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €412 EUR|Low: €163 EUR|High: €772 EUR|Avg: €371 EUR
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 3, 2026
Retailer 9€163 EUR
Retailer 12€165 EUR
Retailer 6€268 EUR
Retailer 3€281 EUR
Retailer 4€293 EUR
Retailer 11€328 EUR
Retailer 8€373 EUR
Retailer 1€412 EUR
Retailer 5€417 EUR
Retailer 13€449 EUR
Retailer 10€519 EUR
Retailer 2€546 EUR
Retailer 7€771 EUR

6 data points across 13 retailers

7 retailers

Retailer 1
-
€133 EUR
$149 USD
Price last confirmed 39 days ago
Retailer 2
-
€163 EUR
$182 USD
View
Price last confirmed 40 days ago
Retailer 3
-
€373 EUR
$417 USD
View
Price last confirmed 40 days ago
B+
Retailer 4
-
€412 EUR
A$708 AUD
View
Retailer 5
-
€417 EUR
$466 USD
View
Price last confirmed 90 days ago
Retailer 6
-
€507 EUR
$566 USD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
9c67793d-7da5-4ab2-98d4-ed1cb1733056 · Sep 21
€530 EUR
$592 USD
View
Price last confirmed 41 days ago
6 more retailers have this diamond
Prices start from €412 EUR

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+
1.21ct Round
€412 EUR