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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 $4,339 USD
As of November 2, 2026
Save $15,860 USD (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $20,199 USD at Novita Diamonds · As of November 1, 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 November 1, 2026, with prices from $4,339 to $20,199, a $15,860 spread on the same certified stone. Novita Diamonds lists it at $20,199. 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: Nov 2
Current: $20,199 USD|Low: $4,339 USD|High: $20,463 USD|Avg: $9,990 USD|-1.3%
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 5$4,339 USD
Retailer 2$5,680 USD
Retailer 4$6,250 USD
Retailer 8$7,487 USD
Retailer 9$7,794 USD
Retailer 10$7,990 USD
Retailer 3$9,298 USD
Retailer 6$13,200 USD
Retailer 7$15,339 USD
Novita Diamonds$20,199 USD

41 data points across 10 retailers

10 retailers$4,339 USD to $20,199 USD

A
Cheapest Retailer
-
$4,339 USD
A
Retailer 2
-
$5,680 USD
£4,472 GBP
View
A
Retailer 3
-
$6,250 USD
View
A
Retailer 4
-
$7,487 USD
View
A
Retailer 5
-
$7,794 USD
€7,423 EUR
View
A
Retailer 6
-
$7,990 USD
View
A
Retailer 7
-
$9,298 USD
£7,321 GBP
View
B+
Retailer 8
-
$13,200 USD
View
B
Retailer 9
-
$15,339 USD
View
Most Expensive
B
Novita Diamonds
cert_728573017 · Nov 1
$20,199 USD
A$31,075 AUD
View
9 more retailers have this diamond
Prices start from $4,339 USDSave up to $15,860 USD

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
$4,339 USD