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Heart|Lab Grown|IGI

3.50ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG828632821

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG828632821

Diamond specifications and retailer prices

From HK$17,276 HKD
$2,202 USD
As of October 30, 2026
Save HK$90,053 HKD (84%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: HK$151,517 HKD at Novita Diamonds · As of October 8, 2026
View at Novita Diamonds

About this 3.5ct lab-grown heart diamond

This 3.5ct 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 LG828632821 or 828632821. Listed at 24 retailers as of October 30, 2026, with a 521% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.50
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828632821
Dimensions10.67 × 9.36 × 6.11 mm
L/W Ratio1.14
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
10.67 mm9.36 mm3.50 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828632821
Side View
Table 59.0%Crown 34.2°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 57.3%

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: HK$151,517 HKD|Low: HK$17,276 HKD|High: HK$151,517 HKD|Avg: HK$46,918 HKD
Novita Diamonds
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
October 30, 2026
Retailer 6HK$17,276 HKD
Retailer 4HK$18,798 HKD
Retailer 11HK$19,340 HKD
Retailer 5HK$20,046 HKD
Retailer 9HK$21,340 HKD
Retailer 18HK$23,198 HKD
Retailer 13HK$23,920 HKD
Retailer 7HK$27,546 HKD
Retailer 16HK$27,589 HKD
Retailer 20HK$29,516 HKD
Retailer 10HK$31,163 HKD
Retailer 3HK$31,414 HKD
Retailer 21HK$45,331 HKD
Retailer 17HK$46,542 HKD
Retailer 22HK$51,782 HKD
Retailer 19HK$54,453 HKD
Retailer 8HK$59,493 HKD
Retailer 14HK$67,034 HKD
Retailer 15HK$70,047 HKD
Retailer 12HK$73,444 HKD
Retailer 2HK$107,329 HKD
Novita DiamondsHK$151,517 HKD

29 data points across 22 retailers

24 retailersHK$17,276 HKD to HK$107,329 HKD

A
Cheapest Retailer
-
HK$17,276 HKD
$2,202 USD
A
Retailer 2
-
HK$18,798 HKD
$2,396 USD
View
A
Retailer 3
-
HK$19,340 HKD
$2,465 USD
View
Final sale: no returns
Retailer 4
-
HK$20,046 HKD
$2,555 USD
View
Price last confirmed 20 days ago
A
Retailer 5
-
HK$20,046 HKD
$2,555 USD
View
A
Retailer 6
-
HK$21,340 HKD
$2,720 USD
View
A
Retailer 7
-
HK$23,198 HKD
View
A
Retailer 8
-
HK$23,920 HKD
£2,401 GBP
View
A
Retailer 9
-
HK$27,546 HKD
$3,511 USD
View
A
Retailer 10
-
HK$27,589 HKD
£2,769 GBP
View
A
Retailer 11
-
HK$29,516 HKD
$3,762 USD
View
A
Retailer 12
-
HK$31,163 HKD
$3,972 USD
View
A
Retailer 13
-
HK$31,414 HKD
$4,004 USD
View
Retailer 14
-
HK$45,331 HKD
A$8,889 AUD
View
Price last confirmed 9 days ago
B+
Retailer 15
-
HK$46,542 HKD
ZAR 95,834 ZAR
View
B+
Retailer 16
-
HK$51,782 HKD
$6,600 USD
View
B+
Retailer 17
-
HK$54,453 HKD
£5,465 GBP
View
Retailer 18
-
HK$58,190 HKD
£5,840 GBP
View
Price last confirmed 21 days ago
B+
Retailer 19
-
HK$59,493 HKD
$7,583 USD
View
B+
Retailer 20
-
HK$67,034 HKD
SGD 11,546 SGD
View
B+
Retailer 21
-
HK$70,047 HKD
$8,928 USD
View
B
Retailer 22
-
HK$73,444 HKD
$9,361 USD
View
B
Retailer 23
-
HK$107,329 HKD
$13,680 USD
View
Most Expensive
Novita Diamonds
cert_828632821 · Oct 8
HK$151,517 HKD
A$29,711 AUD
View
Price last confirmed 22 days ago
23 more retailers have this diamond
Prices start from HK$17,276 HKDSave up to HK$90,053 HKD

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
3.50ct Heart
HK$17,276 HKD