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Round|Lab Grown|IGI

5.05ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG578312998

Shape and cutting style on the report: Round brilliant

Certificate IGI LG578312998

Diamond specifications and retailer prices

From $6,646 USD
As of October 29, 2026
Save $18,656 USD (74%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $25,302 USD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 5.05ct lab-grown round diamond

This 5.05ct 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 LG578312998 or 578312998. Listed at 22 retailers as of October 29, 2026, with prices from $6,646 to $25,302, a $18,656 spread on the same certified stone. Taylor and Hart lists it at $25,302. 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

5.05
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG578312998
Dimensions11.06 × 11.09 × 6.67 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
11.06 mm11.09 mm5.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG578312998
Side View
Table 59.0%Crown 34°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.2%

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: $9,123 USD|Low: $5,036 USD|High: $21,708 USD|Avg: $12,167 USD|+2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 30, 2026
Retailer 3$6,646 USD
Retailer 4$7,052 USD
Retailer 11$8,472 USD
Retailer 14$8,686 USD
Retailer 10$8,690 USD
Retailer 5$8,898 USD
Retailer 1$9,123 USD
Retailer 9$12,081 USD
Retailer 13$13,720 USD
Retailer 8$14,681 USD
Retailer 7$14,841 USD
Retailer 12$15,320 USD
Retailer 2$21,540 USD
Retailer 6$21,708 USD

43 data points across 14 retailers

22 retailers$6,646 USD to $25,302 USD

Retailer 1
-
$6,297 USD
Price last confirmed 19 days ago
Retailer 2
-
$6,549 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
$6,646 USD
View
A
Retailer 4
-
$7,052 USD
View
Final sale: no returns
Retailer 5
-
$7,305 USD
View
Price last confirmed 13 days ago
Retailer 6
-
$7,305 USD
View
Price last confirmed 13 days ago
Retailer 7
-
$8,472 USD
View
Price last confirmed 6 days ago
Retailer 8
-
$8,671 USD
View
Price last confirmed 22 days ago
A
Retailer 9
-
$8,686 USD
View
A
Retailer 10
-
$8,690 USD
View
A
Retailer 11
-
$8,898 USD
View
A
Retailer 12
-
$9,123 USD
£7,184 GBP
View
A
Retailer 13
-
$12,081 USD
€11,506 EUR
View
A
Retailer 14
-
$13,720 USD
View
A
Retailer 15
-
$14,681 USD
£11,560 GBP
View
A
Retailer 16
-
$14,841 USD
ZAR 239,752 ZAR
View
Retailer 17
-
$15,320 USD
A$23,569 AUD
View
Price last confirmed 7 days ago
B+
Retailer 18
-
$17,665 USD
View
B+
Retailer 19
-
$20,326 USD
View
B+
Retailer 20
-
$21,540 USD
View
B+
Retailer 21
-
$21,708 USD
View
Most Expensive
B
Taylor and Hart
AVK999A · Oct 30
$25,302 USD
View
21 more retailers have this diamond
Prices start from $6,646 USDSave up to $18,656 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
5.05ct Round
$6,646 USD