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Round|Lab Grown|IGI

1.28ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG605351685

Shape and cutting style on the report: Round brilliant

Certificate IGI LG605351685

Diamond specifications and retailer prices

From €151 EUR
$169 USD
As of October 29, 2026
Save €1,299 EUR (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €1,450 EUR at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.28ct lab-grown round diamond

This 1.28ct 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 LG605351685 or 605351685. Listed at 10 retailers as of October 29, 2026, with prices from €151 to €1,450, a €1,299 spread on the same certified stone. Do Amore Diamonds lists it at €1,450. 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

1.28
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605351685
Dimensions7.00 × 7.01 × 4.21 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.00 mm7.01 mm1.28 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605351685
Side View
Table 59.0%Crown 33.5°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: €1,450 EUR|Low: €117 EUR|High: €1,450 EUR|Avg: €637 EUR|+3.2%
Do Amore Diamonds
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 26, 2026
Retailer 8€151 EUR
Retailer 11€166 EUR
Retailer 6€175 EUR
Retailer 10€336 EUR
Retailer 4€355 EUR
Retailer 13€413 EUR
Retailer 3€463 EUR
Retailer 7€636 EUR
Retailer 9€665 EUR
Retailer 5€752 EUR
Retailer 2€969 EUR
Retailer 12€1,227 EUR
Do Amore Diamonds€1,450 EUR

16 data points across 13 retailers

10 retailers€151 EUR to €1,450 EUR

A
Cheapest Retailer
-
€151 EUR
$169 USD
A
Retailer 2
-
€166 EUR
$185 USD
View
Final sale: no returns
A
Retailer 3
-
€175 EUR
$196 USD
View
B+
Retailer 4
-
€336 EUR
$375 USD
View
B
Retailer 5
-
€636 EUR
$711 USD
View
B
Retailer 6
-
€665 EUR
$743 USD
View
B
Retailer 7
-
€752 EUR
$840 USD
View
B
Retailer 8
-
€969 EUR
£852 GBP
View
B
Retailer 9
-
€1,253 EUR
$1,400 USD
View
Most Expensive
B
Do Amore Diamonds
27-436365E1A · Oct 29
€1,450 EUR
$1,620 USD
View
9 more retailers have this diamond
Prices start from €151 EURSave up to €1,299 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.

A
1.28ct Round
€151 EUR