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Round|Lab Grown|IGI

1.28ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG779630639

Shape and cutting style on the report: Round brilliant

Certificate IGI LG779630639

Diamond specifications and retailer prices

From €239 EUR
$266 USD
As of October 29, 2026
Save €1,989 EUR (89%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: €2,228 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG779630639 or 779630639. Listed at 25 retailers as of October 29, 2026, with prices from €239 to €2,228, a €1,989 spread on the same certified stone. Brilliant Earth lists it at €2,228. 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
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779630639
Dimensions6.93 × 6.98 × 4.29 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
6.93 mm6.98 mm1.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779630639
Side View
Table 59.0%Crown 34.9°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.8%

Caratlytics Score

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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: €2,228 EUR|Low: €231 EUR|High: €2,228 EUR|Avg: €718 EUR
Brilliant Earth
Retailer 2
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Retailer 23
October 29, 2026
Retailer 17€239 EUR
Retailer 18€267 EUR
Retailer 11€279 EUR
Retailer 8€298 EUR
Retailer 15€298 EUR
Retailer 14€403 EUR
Retailer 6€440 EUR
Retailer 21€481 EUR
Retailer 5€513 EUR
Retailer 9€526 EUR
Retailer 23€534 EUR
Retailer 3€565 EUR
Retailer 13€566 EUR
Retailer 4€727 EUR
Retailer 7€759 EUR
Retailer 20€887 EUR
Retailer 22€951 EUR
Retailer 10€960 EUR
Retailer 2€998 EUR
Retailer 16€1,132 EUR
Retailer 19€1,194 EUR
Retailer 12€1,267 EUR
Brilliant Earth€2,228 EUR

31 data points across 23 retailers

25 retailers€239 EUR to €2,228 EUR

A
Cheapest Retailer
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€239 EUR
$266 USD
A
Retailer 2
-
€267 EUR
$297 USD
View
Final sale: no returns
A
Retailer 3
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€279 EUR
$311 USD
View
A
Retailer 4
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€298 EUR
$332 USD
View
A
Retailer 5
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€298 EUR
$332 USD
View
A
Retailer 6
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€334 EUR
HK$2,900 HKD
View
A
Retailer 7
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€403 EUR
$448 USD
View
A
Retailer 8
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€440 EUR
$490 USD
View
A
Retailer 9
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€481 EUR
£421 GBP
View
A
Retailer 10
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€513 EUR
ZAR 9,225 ZAR
View
A
Retailer 11
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€526 EUR
$585 USD
View
A
Retailer 12
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€534 EUR
View
A
Retailer 13
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€565 EUR
A$968 AUD
View
A
Retailer 14
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€566 EUR
£496 GBP
View
A
Retailer 15
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€655 EUR
$729 USD
View
A
Retailer 16
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€727 EUR
A$1,244 AUD
View
B+
Retailer 17
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€759 EUR
$845 USD
View
B+
Retailer 18
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€887 EUR
A$1,518 AUD
View
B+
Retailer 19
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€951 EUR
SGD 1,430 SGD
View
B+
Retailer 20
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€960 EUR
$1,068 USD
View
B+
Retailer 21
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€998 EUR
$1,111 USD
View
B+
Retailer 22
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€1,132 EUR
$1,260 USD
View
Price last confirmed 22 days ago
B+
Retailer 23
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€1,194 EUR
£1,046 GBP
View
B
Retailer 24
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€1,267 EUR
$1,411 USD
View
Most Expensive
B
Brilliant Earth
18530693A · Oct 29
€2,228 EUR
$2,480 USD
View
24 more retailers have this diamond
Prices start from €239 EURSave up to €1,989 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
€239 EUR