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Round|Lab Grown|IGI

5.12ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG728505108

Shape and cutting style on the report: Round brilliant

Certificate IGI LG728505108

Diamond specifications and retailer prices

From €3,064 EUR
$3,423 USD
As of October 29, 2026
Save €9,423 EUR (75%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €12,487 EUR at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 5.12ct lab-grown round diamond

This 5.12ct lab-grown round sits in the over five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG728505108 or 728505108. Listed at 19 retailers as of October 29, 2026, with prices from €3,064 to €12,487, a €9,423 spread on the same certified stone. Taylor and Hart lists it at €12,487. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.12
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728505108
Dimensions11.08 × 11.02 × 6.81 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
11.08 mm11.02 mm5.12 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728505108
Side View
Table 59.0%Crown 34.9°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.7%

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: €4,726 EUR|Low: €2,657 EUR|High: €13,433 EUR|Avg: €5,790 EUR|-5.3%
Retailer 1
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Retailer 3
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Retailer 5
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Retailer 7
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Retailer 18
Taylor and Hart
October 31, 2026
Retailer 16€2,657 EUR
Retailer 9€3,064 EUR
Retailer 5€3,334 EUR
Retailer 7€3,431 EUR
Retailer 2€3,511 EUR
Retailer 8€3,554 EUR
Retailer 10€3,554 EUR
Retailer 18€4,441 EUR
Retailer 1€4,726 EUR
Retailer 17€4,903 EUR
Retailer 15€4,905 EUR
Retailer 13€5,149 EUR
Retailer 11€7,221 EUR
Retailer 4€7,229 EUR
Retailer 14€7,266 EUR
Retailer 6€8,911 EUR
Retailer 12€9,058 EUR
Retailer 3€9,864 EUR
Taylor and Hart€12,487 EUR

30 data points across 19 retailers

19 retailers€3,064 EUR to €12,487 EUR

Retailer 1
-
€2,657 EUR
£2,337 GBP
Price last confirmed 15 days ago
A
Retailer 2
-
€3,064 EUR
$3,423 USD
View
A
Retailer 3
-
€3,334 EUR
$3,725 USD
View
A
Retailer 4
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€3,431 EUR
$3,833 USD
View
Final sale: no returns
A
Retailer 5
-
€3,511 EUR
$3,923 USD
View
A
Retailer 6
-
€3,554 EUR
$3,971 USD
View
Retailer 7
-
€3,554 EUR
$3,971 USD
View
Price last confirmed 19 days ago
A
Retailer 8
-
€4,441 EUR
$4,962 USD
View
A
Retailer 9
-
€4,726 EUR
£4,157 GBP
View
A
Retailer 10
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€4,903 EUR
$5,478 USD
View
A
Retailer 11
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€4,905 EUR
$5,480 USD
View
A
Retailer 12
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€5,149 EUR
$5,752 USD
View
A
Retailer 13
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€7,221 EUR
ZAR 130,324 ZAR
View
A
Retailer 14
-
€7,229 EUR
$8,076 USD
View
Retailer 15
-
€7,266 EUR
A$12,489 AUD
View
Price last confirmed 9 days ago
A
Retailer 16
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€8,911 EUR
$9,955 USD
View
A
Retailer 17
-
€9,058 EUR
£7,968 GBP
View
A
Retailer 18
-
€9,864 EUR
$11,020 USD
View
Most Expensive
A
Taylor and Hart
L94QVO1 · Oct 30
€12,487 EUR
$13,950 USD
View
18 more retailers have this diamond
Prices start from €3,064 EURSave up to €9,423 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
5.12ct Round
€3,064 EUR