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Round|Lab Grown|IGI

5.21ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG595367198

Shape and cutting style on the report: Round brilliant

Certificate IGI LG595367198

Diamond specifications and retailer prices

From $15,724 USD
As of October 29, 2026
Save $30,766 USD (66%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $46,490 USD at Brilliance · As of October 27, 2026
View at Brilliance

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 LG595367198 or 595367198. Listed at 14 retailers as of October 27, 2026, with prices from $15,724 to $46,490, a $30,766 spread on the same certified stone. Brilliance lists it at $46,490. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG595367198
Dimensions11.34 × 11.37 × 6.72 mm
L/W Ratio1.00
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
11.34 mm11.37 mm5.21 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG595367198
Side View
Table 59.0%Crown 32.8°GirdlePavilion 40.9°Culet: NoneDepth 59.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $46,490 USD|Low: $12,578 USD|High: $46,490 USD|Avg: $27,492 USD|+25.8%
Brilliance
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 9$16,102 USD
Retailer 10$17,611 USD
Retailer 8$18,045 USD
Retailer 7$18,499 USD
Retailer 11$18,535 USD
Retailer 4$20,550 USD
Retailer 5$28,805 USD
Retailer 2$37,062 USD
Retailer 6$37,520 USD
Retailer 3$45,653 USD
Brilliance$46,490 USD

40 data points across 11 retailers

14 retailers$15,724 USD to $46,490 USD

A
Cheapest Retailer
-
$15,724 USD
B+
Retailer 2
-
$16,102 USD
View
B+
Retailer 3
-
$17,095 USD
View
B+
Retailer 4
-
$17,611 USD
View
Final sale: no returns
B+
Retailer 5
-
$18,045 USD
View
B+
Retailer 6
-
$18,240 USD
View
Retailer 7
-
$18,240 USD
View
Price last confirmed 13 days ago
B+
Retailer 8
-
$18,499 USD
View
B+
Retailer 9
-
$20,550 USD
£16,181 GBP
View
B+
Retailer 10
-
$28,805 USD
£22,681 GBP
View
B
Retailer 11
-
$37,062 USD
ZAR 598,736 ZAR
View
Retailer 12
-
$37,520 USD
A$57,723 AUD
View
Price last confirmed 7 days ago
B
Retailer 13
-
$45,653 USD
View
Most Expensive
B
Brilliance
D22536311 · Oct 27
$46,490 USD
View
13 more retailers have this diamond
Prices start from $15,724 USDSave up to $30,766 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
$15,724 USD