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Heart|Lab Grown|IGI

4.00ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG804656578

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG804656578

Diamond specifications and retailer prices

From $12,411 AUD
$8,718 USD
As of October 30, 2026
Save $33,191 AUD (73%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $45,602 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804656578 or 804656578. Listed at 19 retailers as of October 30, 2026, with prices from $12,411 to $45,602, a $33,191 spread on the same certified stone. Taylor and Hart lists it at $45,602. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804656578
Dimensions10.82 × 10.39 × 6.22 mm
L/W Ratio1.04
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
10.82 mm10.39 mm4.00 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804656578
Side View
Table 58.0%Crown 36.5°Girdle: MED-THKPavilion 39.5°Culet: NoneDepth 57.5%

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 30
Current: $17,239 AUD|Low: $9,840 AUD|High: $40,099 AUD|Avg: $20,312 AUD|-0.9%
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
Retailer 15
Retailer 16
Retailer 17
October 31, 2026
Retailer 9$9,840 AUD
Retailer 17$12,411 AUD
Retailer 5$12,764 AUD
Retailer 7$13,282 AUD
Retailer 6$13,900 AUD
Retailer 16$14,264 AUD
Retailer 14$14,307 AUD
Retailer 2$14,397 AUD
Retailer 4$14,397 AUD
Retailer 15$16,014 AUD
Retailer 1$17,239 AUD
Retailer 10$22,621 AUD
Retailer 13$26,353 AUD
Retailer 12$26,703 AUD
Retailer 11$30,645 AUD
Retailer 3$36,868 AUD
Retailer 8$40,099 AUD

37 data points across 17 retailers

19 retailers$12,411 AUD to $45,602 AUD

A
Cheapest Retailer
-
$12,411 AUD
$8,718 USD
B+
Retailer 2
-
$12,764 AUD
$8,966 USD
View
B+
Retailer 3
-
$12,908 AUD
$9,067 USD
View
B+
Retailer 4
-
$13,282 AUD
$9,330 USD
View
B+
Retailer 5
-
$13,900 AUD
$9,764 USD
View
Final sale: no returns
B+
Retailer 6
-
$14,264 AUD
$10,020 USD
View
B+
Retailer 7
-
$14,307 AUD
$10,050 USD
View
B+
Retailer 8
-
$14,397 AUD
$10,113 USD
View
Retailer 9
-
$14,397 AUD
$10,113 USD
View
Price last confirmed 15 days ago
B+
Retailer 10
-
$16,014 AUD
$11,249 USD
View
B+
Retailer 11
-
$16,192 AUD
$11,374 USD
View
B+
Retailer 12
-
$17,239 AUD
£9,535 GBP
View
B+
Retailer 13
-
$22,621 AUD
$15,890 USD
View
B+
Retailer 14
-
$26,353 AUD
£14,576 GBP
View
B
Retailer 15
-
$26,703 AUD
€17,864 EUR
View
B+
Retailer 16
-
$30,645 AUD
ZAR 347,756 ZAR
View
B
Retailer 17
-
$36,868 AUD
$25,898 USD
View
B
Retailer 18
-
$40,099 AUD
$28,167 USD
View
Most Expensive
B
Taylor and Hart
Y9WOHQC · Oct 30
$45,602 AUD
$32,033 USD
View
18 more retailers have this diamond
Prices start from $12,411 AUDSave up to $33,191 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
$12,411 AUD