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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 €3,050 EUR
As of November 5, 2026
Save €9,379 EUR (75%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €12,429 EUR at Taylor and Hart · As of November 4, 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 November 4, 2026, with prices from €3,050 to €12,429, a €9,379 spread on the same certified stone. Taylor and Hart lists it at €12,429. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: €4,657 EUR|Low: €2,644 EUR|High: €12,429 EUR|Avg: €5,610 EUR|-6.6%
Retailer 1
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Retailer 19
Taylor and Hart
November 6, 2026
Retailer 18€2,644 EUR
Retailer 10€3,050 EUR
Retailer 6€3,319 EUR
Retailer 8€3,415 EUR
Retailer 3€3,495 EUR
Retailer 9€3,538 EUR
Retailer 11€3,538 EUR
Retailer 15€3,542 EUR
Retailer 2€4,421 EUR
Retailer 1€4,657 EUR
Retailer 19€4,881 EUR
Retailer 13€5,125 EUR
Retailer 14€5,965 EUR
Retailer 5€7,195 EUR
Retailer 16€7,210 EUR
Retailer 17€7,220 EUR
Retailer 7€8,869 EUR
Retailer 12€8,943 EUR
Retailer 4€9,817 EUR
Taylor and Hart€12,429 EUR

33 data points across 20 retailers

19 retailers€3,050 EUR to €12,429 EUR

A
Cheapest Retailer
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€3,050 EUR
A
Retailer 2
-
€3,319 EUR
View
A
Retailer 3
-
€3,415 EUR
View
Final sale: no returns
A
Retailer 4
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€3,495 EUR
View
A
Retailer 5
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€3,538 EUR
View
Retailer 6
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€3,538 EUR
View
Price last confirmed 25 days ago
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Retailer 7
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€3,542 EUR
View
A
Retailer 8
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€4,421 EUR
View
A
Retailer 9
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€4,657 EUR
View
A
Retailer 10
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€4,881 EUR
View
A
Retailer 11
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€5,125 EUR
View
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Retailer 12
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€5,965 EUR
View
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Retailer 13
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€7,195 EUR
View
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Retailer 14
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€7,210 EUR
View
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Retailer 15
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€7,220 EUR
View
A
Retailer 16
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€8,869 EUR
View
A
Retailer 17
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€8,943 EUR
View
A
Retailer 18
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€9,817 EUR
View
Most Expensive
B+
Taylor and Hart
L94QVO1 · Nov 4
€12,429 EUR
$13,950 USD
View
18 more retailers have this diamond
Prices start from €3,050 EURSave up to €9,379 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
€3,050 EUR