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Round|Lab Grown|IGI

1.28ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG800680138

Shape and cutting style on the report: Round brilliant

Certificate IGI LG800680138

Diamond specifications and retailer prices

From €412 EUR
HK$3,600 HKD
As of October 30, 2026
Save €1,226 EUR (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €1,638 EUR at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800680138 or 800680138. Listed at 12 retailers as of October 29, 2026, with prices from €412 to €1,638, a €1,226 spread on the same certified stone. Brilliant Earth lists it at €1,638. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800680138
Dimensions7.09 × 7.06 × 4.20 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
7.09 mm7.06 mm1.28 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800680138
Side View
Table 57.0%Crown 33°Girdle: MediumPavilion 40.2°Culet: NoneDepth 59.3%

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 30
Current: €1,638 EUR|Low: €412 EUR|High: €1,683 EUR|Avg: €893 EUR|-2.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 7€412 EUR
Retailer 12€503 EUR
Retailer 8€578 EUR
Retailer 5€583 EUR
Retailer 2€632 EUR
Retailer 4€668 EUR
Retailer 10€669 EUR
Retailer 9€807 EUR
Retailer 11€1,184 EUR
Retailer 3€1,352 EUR
Retailer 6€1,433 EUR
Brilliant Earth€1,638 EUR

42 data points across 12 retailers

12 retailers€412 EUR to €1,638 EUR

A
Cheapest Retailer
-
€412 EUR
HK$3,600 HKD
A
Retailer 2
-
€503 EUR
$562 USD
View
A
Retailer 3
-
€578 EUR
$646 USD
View
A
Retailer 4
-
€583 EUR
View
A
Retailer 5
-
€632 EUR
£556 GBP
View
A
Retailer 6
-
€668 EUR
A$1,148 AUD
View
A
Retailer 7
-
€669 EUR
$747 USD
View
B+
Retailer 8
-
€807 EUR
$901 USD
View
B+
Retailer 9
-
€1,184 EUR
$1,323 USD
View
B
Retailer 10
-
€1,352 EUR
$1,511 USD
View
B+
Retailer 11
-
€1,433 EUR
£1,261 GBP
View
Most Expensive
B
Brilliant Earth
21143557A · Oct 29
€1,638 EUR
$1,830 USD
View
11 more retailers have this diamond
Prices start from €412 EURSave up to €1,226 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
€412 EUR