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Heart|Lab Grown|IGI

4.05ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG804664728

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG804664728

Diamond specifications and retailer prices

From $16,571 AUD
$11,640 USD
As of October 30, 2026
Save $39,694 AUD (71%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $56,265 AUD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 4.05ct lab-grown heart diamond

This 4.05ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804664728 or 804664728. Listed at 8 retailers as of October 30, 2026, with prices from $16,571 to $56,265, a $39,694 spread on the same certified stone. Taylor and Hart lists it at $56,265. 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

4.05
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804664728
Dimensions11.10 × 9.46 × 6.59 mm
L/W Ratio1.17
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
11.10 mm9.46 mm4.05 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804664728
Side View
Table 56.0%Crown 35.6°Girdle: MED-THKPavilion 41°Culet: NoneDepth 59.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $29,611 AUD|Low: $16,028 AUD|High: $56,265 AUD|Avg: $31,050 AUD|+0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Taylor and Hart
October 29, 2026
Retailer 4$16,571 AUD
Retailer 8$17,584 AUD
Retailer 7$18,699 AUD
Retailer 2$23,130 AUD
Retailer 1$29,611 AUD
Retailer 3$30,550 AUD
Retailer 9$31,897 AUD
Retailer 6$32,663 AUD
Retailer 5$53,274 AUD
Taylor and Hart$56,265 AUD

14 data points across 10 retailers

8 retailers$16,571 AUD to $56,265 AUD

B+
Cheapest Retailer
-
$16,571 AUD
$11,640 USD
B+
Retailer 2
-
$17,584 AUD
$12,352 USD
View
B+
Retailer 3
-
$18,699 AUD
$13,135 USD
View
Retailer 4
-
$23,130 AUD
£12,793 GBP
View
Price last confirmed 11 days ago
B+
Retailer 5
-
$29,611 AUD
£16,378 GBP
View
B
Retailer 6
-
$30,550 AUD
$21,460 USD
View
B
Retailer 7
-
$53,274 AUD
$37,422 USD
View
Most Expensive
B
Taylor and Hart
RQLT5QX · Oct 30
$56,265 AUD
$39,523 USD
View
7 more retailers have this diamond
Prices start from $16,571 AUDSave up to $39,694 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.

B+
4.05ct Heart
$16,571 AUD