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Heart|Lab Grown|IGI

4.00ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG811622391

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG811622391

Diamond specifications and retailer prices

From $7,566 AUD
$5,315 USD
As of October 30, 2026
Save $23,683 AUD (76%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $31,250 AUD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 4ct lab-grown heart diamond

This 4ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811622391 or 811622391. Listed at 20 retailers as of October 30, 2026, with prices from $7,566 to $31,250, a $23,683 spread on the same certified stone. Taylor and Hart lists it at $31,250. 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

4.00
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811622391
Dimensions10.36 × 10.72 × 6.33 mm
L/W Ratio1.03
Girdle conditionFaceted
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
10.36 mm10.72 mm4.00 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811622391
Side View
Table 56.0%Crown 35.3°Girdle: MED-THKPavilion 39.9°Culet: NoneDepth 59.0%

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 30
Current: $18,681 AUD|Low: $7,265 AUD|High: $28,273 AUD|Avg: $14,565 AUD|+1.9%
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 29, 2026
Retailer 2$7,566 AUD
Retailer 5$8,147 AUD
Retailer 6$8,475 AUD
Retailer 3$8,778 AUD
Retailer 14$8,798 AUD
Retailer 13$10,809 AUD
Retailer 7$11,251 AUD
Retailer 10$12,884 AUD
Retailer 8$16,021 AUD
Retailer 9$17,957 AUD
Retailer 1$18,681 AUD
Retailer 12$19,352 AUD
Retailer 4$22,241 AUD
Retailer 11$27,419 AUD

38 data points across 14 retailers

20 retailers$7,566 AUD to $31,250 AUD

A
Cheapest Retailer
-
$7,566 AUD
$5,315 USD
A
Retailer 2
-
$7,929 AUD
$5,570 USD
View
A
Retailer 3
-
$8,147 AUD
$5,723 USD
View
A
Retailer 4
-
$8,475 AUD
$5,953 USD
View
Final sale: no returns
A
Retailer 5
-
$8,611 AUD
$6,049 USD
View
A
Retailer 6
-
$8,778 AUD
$6,166 USD
View
Retailer 7
-
$8,778 AUD
$6,166 USD
View
Price last confirmed 15 days ago
A
Retailer 8
-
$8,798 AUD
$6,180 USD
View
A
Retailer 9
-
$10,419 AUD
$7,319 USD
View
A
Retailer 10
-
$10,809 AUD
$7,593 USD
View
A
Retailer 11
-
$11,251 AUD
£6,223 GBP
View
B+
Retailer 12
-
$12,884 AUD
$9,050 USD
View
B+
Retailer 13
-
$16,021 AUD
€10,718 EUR
View
B+
Retailer 14
-
$17,957 AUD
£9,932 GBP
View
B+
Retailer 15
-
$18,681 AUD
ZAR 211,997 ZAR
View
Retailer 16
-
$19,352 AUD
View
Price last confirmed 9 days ago
B
Retailer 17
-
$22,241 AUD
$15,623 USD
View
B
Retailer 18
-
$24,409 AUD
$17,146 USD
View
B
Retailer 19
-
$27,419 AUD
$19,260 USD
View
Most Expensive
B
Taylor and Hart
74W3RJB · Oct 30
$31,250 AUD
$21,951 USD
View
19 more retailers have this diamond
Prices start from $7,566 AUDSave up to $23,683 AUD

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
4.00ct Heart
$7,566 AUD