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 $8,277 NZD
$4,665 USD
As of October 29, 2026
Save $26,079 NZD (76%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $34,356 NZD at Taylor and Hart · As of October 30, 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 29, 2026, with prices from $8,277 to $34,356, a $26,079 spread on the same certified stone. Taylor and Hart lists it at $34,356. 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
Colour
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

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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: $10,720 NZD|Low: $9,230 NZD|High: $46,149 NZD|Avg: $19,048 NZD|-36.1%
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 31, 2026
Retailer 2$9,271 NZD
Retailer 13$9,661 NZD
Retailer 1$10,720 NZD
Retailer 6$11,868 NZD
Retailer 8$12,429 NZD
Retailer 12$13,928 NZD
Retailer 14$14,026 NZD
Retailer 7$14,240 NZD
Retailer 11$15,429 NZD
Retailer 15$15,529 NZD
Retailer 3$18,009 NZD
Retailer 9$19,507 NZD
Retailer 10$19,987 NZD
Retailer 5$24,820 NZD
Retailer 4$26,688 NZD
Taylor and Hart$34,356 NZD

31 data points across 16 retailers

19 retailers$8,277 NZD to $34,356 NZD

A
Cheapest Retailer
-
$8,277 NZD
$4,665 USD
A
Retailer 2
-
$9,271 NZD
$5,225 USD
View
Final sale: no returns
A
Retailer 3
-
$9,661 NZD
$5,445 USD
View
A
Retailer 4
-
$10,720 NZD
$6,042 USD
View
Retailer 5
-
$11,868 NZD
$6,689 USD
View
Price last confirmed 23 days ago
Retailer 6
-
$11,868 NZD
$6,689 USD
View
Price last confirmed 9 days ago
Retailer 7
-
$11,868 NZD
$6,689 USD
View
Price last confirmed 14 days ago
A
Retailer 8
-
$12,429 NZD
£5,516 GBP
View
A
Retailer 9
-
$13,928 NZD
$7,850 USD
View
A
Retailer 10
-
$14,026 NZD
$7,905 USD
View
Retailer 11
-
$14,240 NZD
HK$62,700 HKD
View
Price last confirmed 41 days ago
A
Retailer 12
-
$15,429 NZD
€8,282 EUR
View
A
Retailer 13
-
$15,529 NZD
$8,752 USD
View
A
Retailer 14
-
$18,009 NZD
$10,150 USD
View
A
Retailer 15
-
$19,507 NZD
ZAR 177,611 ZAR
View
A
Retailer 16
-
$19,987 NZD
£8,870 GBP
View
Retailer 17
-
$24,820 NZD
A$21,521 AUD
View
Price last confirmed 8 days ago
A
Retailer 18
-
$26,688 NZD
$15,041 USD
View
Most Expensive
B+
Taylor and Hart
FOM5YL9 · Oct 30
$34,356 NZD
$19,363 USD
View
18 more retailers have this diamond
Prices start from $8,277 NZDSave up to $26,079 NZD

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
$8,277 NZD