Radiant|Lab Grown|IGI

5.05ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG665415778

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG665415778

Diamond specifications and retailer prices

From $7,890 USD
As of October 28, 2026
Save $29,957 USD (79%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $37,847 USD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 5.05ct lab-grown radiant diamond

This 5.05ct lab-grown radiant 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 LG665415778 or 665415778. Listed at 24 retailers as of October 28, 2026, with prices from $7,890 to $37,847, a $29,957 spread on the same certified stone. Taylor and Hart lists it at $37,847. 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 angle43.7°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665415778
Dimensions12.05 × 8.41 × 5.70 mm
L/W Ratio1.43
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.05 mm8.41 mm5.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665415778
Side View
Table 65.0%Crown 43.7°Girdle: MED-STKPavilion 34.3°Culet: NoneDepth 67.8%

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 28
Current: $13,029 USD|Low: $7,890 USD|High: $61,910 USD|Avg: $18,570 USD|-4.7%
Retailer 1
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Retailer 18
Taylor and Hart
October 30, 2026
Retailer 14$7,890 USD
Retailer 2$8,710 USD
Retailer 5$10,251 USD
Retailer 9$11,039 USD
Retailer 4$11,300 USD
Retailer 7$11,434 USD
Retailer 16$11,627 USD
Retailer 6$11,829 USD
Retailer 18$12,507 USD
Retailer 1$13,029 USD
Retailer 11$15,029 USD
Retailer 15$17,090 USD
Retailer 8$18,090 USD
Retailer 13$19,931 USD
Retailer 10$21,051 USD
Retailer 12$25,644 USD
Retailer 17$26,114 USD
Taylor and Hart$37,847 USD
Retailer 3$61,510 USD

26 data points across 19 retailers

24 retailers$7,890 USD to $37,847 USD

A
Cheapest Retailer
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$7,890 USD
A
Retailer 2
-
$8,710 USD
View
A
Retailer 3
-
$9,857 USD
View
A
Retailer 4
-
$10,251 USD
View
A
Retailer 5
-
$11,039 USD
View
Final sale: no returns
A
Retailer 6
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$11,300 USD
View
A
Retailer 7
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$11,434 USD
View
A
Retailer 8
-
$11,627 USD
View
Retailer 9
-
$11,700 USD
View
Price last confirmed 14 days ago
A
Retailer 10
-
$11,829 USD
View
A
Retailer 11
-
$12,507 USD
View
Retailer 12
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$12,608 USD
View
Price last confirmed 14 days ago
A
Retailer 13
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$13,029 USD
£10,259 GBP
View
A
Retailer 14
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$15,029 USD
£11,834 GBP
View
A
Retailer 15
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$17,090 USD
View
A
Retailer 16
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$18,090 USD
£14,244 GBP
View
B+
Retailer 17
-
$19,931 USD
£15,694 GBP
View
B+
Retailer 18
-
$21,051 USD
View
B+
Retailer 19
-
$21,761 USD
View
B+
Retailer 20
-
$25,644 USD
ZAR 414,282 ZAR
View
Retailer 21
-
$26,114 USD
A$40,176 AUD
View
Price last confirmed 7 days ago
Most Expensive
B
Taylor and Hart
ZVW1TLP · Oct 30
$37,847 USD
View
21 more retailers have this diamond
Prices start from $7,890 USDSave up to $29,957 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 Radiant
$7,890 USD