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Heart|Lab Grown|IGI

3.45ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG829613818

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG829613818

Diamond specifications and retailer prices

From HK$12,231 HKD
$1,559 USD
As of October 30, 2026
Save HK$66,853 HKD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$79,085 HKD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.45ct lab-grown heart diamond

This 3.45ct 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 LG829613818 or 829613818. Listed at 19 retailers as of October 30, 2026, with prices from HK$12,231 to HK$79,085, a HK$66,853 spread on the same certified stone. Brilliant Earth lists it at HK$79,085. 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

3.45
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG829613818
Dimensions9.29 × 10.40 × 5.92 mm
L/W Ratio1.12
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
9.29 mm10.40 mm3.45 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG829613818
Side View
Table 57.0%Crown 35.8°Girdle: MED-THKPavilion 36.6°Culet: NoneDepth 56.9%

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$79,085 HKD|Low: HK$12,231 HKD|High: HK$109,840 HKD|Avg: HK$32,011 HKD|-28.0%
Brilliant Earth
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
October 31, 2026
Retailer 5HK$12,231 HKD
Retailer 17HK$13,306 HKD
Retailer 6HK$13,808 HKD
Retailer 9HK$14,185 HKD
Retailer 10HK$14,185 HKD
Retailer 18HK$15,534 HKD
Retailer 2HK$19,929 HKD
Retailer 7HK$22,329 HKD
Retailer 19HK$22,902 HKD
Retailer 11HK$26,589 HKD
Retailer 3HK$29,539 HKD
Retailer 15HK$32,092 HKD
Retailer 12HK$32,944 HKD
Retailer 14HK$36,906 HKD
Retailer 13HK$40,733 HKD
Retailer 8HK$48,368 HKD
Retailer 4HK$49,855 HKD
Retailer 16HK$52,762 HKD
Brilliant EarthHK$79,085 HKD

38 data points across 19 retailers

19 retailersHK$12,231 HKD to HK$79,085 HKD

A
Cheapest Retailer
-
HK$12,231 HKD
$1,559 USD
A
Retailer 2
-
HK$13,306 HKD
$1,696 USD
View
A
Retailer 3
-
HK$13,808 HKD
$1,760 USD
View
Final sale: no returns
Retailer 4
-
HK$14,185 HKD
$1,808 USD
View
Price last confirmed 18 days ago
A
Retailer 5
-
HK$14,185 HKD
$1,808 USD
View
A
Retailer 6
-
HK$15,534 HKD
$1,980 USD
View
A
Retailer 7
-
HK$19,929 HKD
£2,000 GBP
View
A
Retailer 8
-
HK$22,329 HKD
$2,846 USD
View
A
Retailer 9
-
HK$22,902 HKD
$2,919 USD
View
A
Retailer 10
-
HK$26,589 HKD
$3,389 USD
View
A
Retailer 11
-
HK$29,539 HKD
$3,765 USD
View
Retailer 12
-
HK$32,092 HKD
A$6,293 AUD
View
Price last confirmed 8 days ago
A
Retailer 13
-
HK$32,944 HKD
ZAR 67,835 ZAR
View
B+
Retailer 14
-
HK$36,906 HKD
$4,704 USD
View
B+
Retailer 15
-
HK$40,733 HKD
£4,088 GBP
View
B+
Retailer 16
-
HK$48,368 HKD
SGD 8,331 SGD
View
B+
Retailer 17
-
HK$49,855 HKD
$6,354 USD
View
B+
Retailer 18
-
HK$52,762 HKD
$6,725 USD
View
Most Expensive
B
Brilliant Earth
21417047A · Oct 30
HK$79,085 HKD
$10,080 USD
View
18 more retailers have this diamond
Prices start from HK$12,231 HKDSave up to HK$66,853 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
3.45ct Heart
HK$12,231 HKD