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 $1,559 USD
As of October 30, 2026
Save $8,521 USD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $10,080 USD 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 $1,559 to $10,080, a $8,521 spread on the same certified stone. Brilliant Earth lists it at $10,080. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $10,080 USD|Low: $1,559 USD|High: $14,000 USD|Avg: $4,080 USD|-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
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Retailer 17
Retailer 18
Retailer 19
October 31, 2026
Retailer 5$1,559 USD
Retailer 17$1,696 USD
Retailer 6$1,760 USD
Retailer 9$1,808 USD
Retailer 10$1,808 USD
Retailer 18$1,980 USD
Retailer 2$2,540 USD
Retailer 7$2,846 USD
Retailer 19$2,919 USD
Retailer 11$3,389 USD
Retailer 3$3,765 USD
Retailer 15$4,090 USD
Retailer 12$4,199 USD
Retailer 14$4,704 USD
Retailer 13$5,192 USD
Retailer 8$6,165 USD
Retailer 4$6,354 USD
Retailer 16$6,725 USD
Brilliant Earth$10,080 USD

38 data points across 19 retailers

19 retailers$1,559 USD to $10,080 USD

A
Cheapest Retailer
-
$1,559 USD
A
Retailer 2
-
$1,696 USD
View
A
Retailer 3
-
$1,760 USD
View
Final sale: no returns
Retailer 4
-
$1,808 USD
View
Price last confirmed 18 days ago
A
Retailer 5
-
$1,808 USD
View
A
Retailer 6
-
$1,980 USD
View
A
Retailer 7
-
$2,540 USD
£2,000 GBP
View
A
Retailer 8
-
$2,846 USD
View
A
Retailer 9
-
$2,919 USD
View
A
Retailer 10
-
$3,389 USD
View
A
Retailer 11
-
$3,765 USD
View
Retailer 12
-
$4,090 USD
A$6,293 AUD
View
Price last confirmed 8 days ago
A
Retailer 13
-
$4,199 USD
ZAR 67,835 ZAR
View
B+
Retailer 14
-
$4,704 USD
View
B+
Retailer 15
-
$5,192 USD
£4,088 GBP
View
B+
Retailer 16
-
$6,165 USD
SGD 8,331 SGD
View
B+
Retailer 17
-
$6,354 USD
View
B+
Retailer 18
-
$6,725 USD
View
Most Expensive
B
Brilliant Earth
21417047A · Oct 30
$10,080 USD
View
18 more retailers have this diamond
Prices start from $1,559 USDSave up to $8,521 USD

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
$1,559 USD