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Oval|Lab Grown|IGI

5.51ct F IF Oval Lab Grown Diamond

EX • F/IF • IGI LG728573017

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG728573017

Diamond specifications and retailer prices

From €3,884 EUR
$4,339 USD
As of October 30, 2026
Save €9,846 EUR (72%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €18,304 EUR at Novita Diamonds · As of October 8, 2026
View at Novita Diamonds

About this 5.51ct lab-grown oval diamond

This 5.51ct lab-grown oval sits in the over five carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG728573017 or 728573017. Listed at 10 retailers as of October 30, 2026, with a 254% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

5.51
Carat
F
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728573017
Dimensions14.84 × 10.03 × 5.91 mm
L/W Ratio1.48
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
14.84 mm10.03 mm5.51 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728573017
Side View
Table 62.0%Crown 32°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 58.9%

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 30
Current: €18,304 EUR|Low: €3,884 EUR|High: €18,316 EUR|Avg: €8,954 EUR|-0.1%
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 3€3,884 EUR
Retailer 2€5,084 EUR
Retailer 10€6,258 EUR
Retailer 6€6,702 EUR
Retailer 8€6,976 EUR
Retailer 9€7,152 EUR
Retailer 7€8,367 EUR
Retailer 4€11,815 EUR
Retailer 5€13,730 EUR
Novita Diamonds€18,304 EUR

39 data points across 10 retailers

10 retailers€3,884 EUR to €13,730 EUR

A
Cheapest Retailer
-
€3,884 EUR
$4,339 USD
A
Retailer 2
-
€5,084 EUR
£4,472 GBP
View
A
Retailer 3
-
€6,258 EUR
$6,992 USD
View
A
Retailer 4
-
€6,702 EUR
$7,487 USD
View
A
Retailer 5
-
€6,976 EUR
View
A
Retailer 6
-
€7,152 EUR
$7,990 USD
View
A
Retailer 7
-
€8,367 EUR
£7,360 GBP
View
B+
Retailer 8
-
€11,815 EUR
$13,200 USD
View
B
Retailer 9
-
€13,730 EUR
$15,339 USD
View
Most Expensive
Novita Diamonds
cert_728573017 · Oct 8
€18,304 EUR
A$31,460 AUD
View
Price last confirmed 24 days ago
9 more retailers have this diamond
Prices start from €3,884 EURSave up to €9,846 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
5.51ct Oval
€3,884 EUR