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Round|Lab Grown|IGI

5.21ct E IF Round Lab Grown Diamond

EX • E/IF • IGI LG818674895

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818674895

Diamond specifications and retailer prices

From $4,665 USD
As of October 29, 2026
Save $14,698 USD (76%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $19,363 USD at Taylor and Hart · As of October 28, 2026
View at Taylor and Hart

About this 5.21ct lab-grown round diamond

This 5.21ct 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 LG818674895 or 818674895. Listed at 19 retailers as of October 28, 2026, with prices from $4,665 to $19,363, a $14,698 spread on the same certified stone. Taylor and Hart lists it at $19,363. 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

5.21
Carat
E
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818674895
Dimensions11.28 × 11.36 × 6.78 mm
L/W Ratio1.01
Girdle conditionFaceted
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
11.28 mm11.36 mm5.21 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818674895
Side View
Table 57.0%Crown 32.7°Girdle: THN-MEDPavilion 40.9°Culet: NoneDepth 59.9%

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 29
Current: $7,005 USD|Low: $5,202 USD|High: $26,010 USD|Avg: $10,782 USD|-24.0%
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
Retailer 15
Taylor and Hart
October 30, 2026
Retailer 2$5,225 USD
Retailer 12$5,445 USD
Retailer 14$6,301 USD
Retailer 6$6,689 USD
Retailer 1$7,005 USD
Retailer 11$7,850 USD
Retailer 13$7,905 USD
Retailer 7$8,026 USD
Retailer 10$8,696 USD
Retailer 15$8,752 USD
Retailer 3$10,150 USD
Retailer 8$10,994 USD
Retailer 9$11,265 USD
Retailer 5$13,989 USD
Retailer 4$15,041 USD
Taylor and Hart$19,363 USD

30 data points across 16 retailers

19 retailers$4,665 USD to $19,363 USD

A
Cheapest Retailer
-
$4,665 USD
A
Retailer 2
-
$5,225 USD
View
Final sale: no returns
A
Retailer 3
-
$5,445 USD
View
A
Retailer 4
-
$6,301 USD
View
Retailer 5
-
$6,689 USD
View
Price last confirmed 22 days ago
Retailer 6
-
$6,689 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$6,689 USD
View
Price last confirmed 13 days ago
A
Retailer 8
-
$7,005 USD
£5,516 GBP
View
A
Retailer 9
-
$7,850 USD
View
A
Retailer 10
-
$7,905 USD
View
Retailer 11
-
$8,026 USD
HK$62,700 HKD
View
Price last confirmed 41 days ago
A
Retailer 12
-
$8,696 USD
€8,282 EUR
View
A
Retailer 13
-
$8,752 USD
View
A
Retailer 14
-
$10,150 USD
View
A
Retailer 15
-
$10,994 USD
ZAR 177,611 ZAR
View
A
Retailer 16
-
$11,265 USD
£8,870 GBP
View
Retailer 17
-
$13,989 USD
A$21,521 AUD
View
Price last confirmed 7 days ago
A
Retailer 18
-
$15,041 USD
View
Most Expensive
B+
Taylor and Hart
FOM5YL9 · Oct 28
$19,363 USD
View
18 more retailers have this diamond
Prices start from $4,665 USDSave up to $14,698 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
5.21ct Round
$4,665 USD