Heart|Lab Grown|IGI

1.65ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG846663395

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG846663395

Diamond specifications and retailer prices

From $678 USD
As of October 30, 2026
Save $3,542 USD (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,220 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.65ct lab-grown heart diamond

This 1.65ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG846663395 or 846663395. Listed at 12 retailers as of October 30, 2026, with prices from $678 to $4,220, a $3,542 spread on the same certified stone. Brilliant Earth lists it at $4,220. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.65
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846663395
Dimensions6.99 × 7.92 × 4.94 mm
L/W Ratio1.13
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
6.99 mm7.92 mm1.65 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846663395
Side View
Table 59.0%Crown 37.9°Girdle: STK-THKPavilion 40.3°Culet: NoneDepth 62.4%

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: $4,220 USD|Low: $678 USD|High: $5,280 USD|Avg: $2,131 USD|-20.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2$678 USD
Retailer 3$738 USD
Retailer 5$892 USD
Retailer 8$944 USD
Retailer 6$965 USD
Retailer 12$1,279 USD
Retailer 11$1,363 USD
Retailer 9$2,211 USD
Retailer 4$3,105 USD
Retailer 7$3,331 USD
Retailer 10$3,484 USD
Brilliant Earth$4,220 USD

4 data points across 12 retailers

12 retailers$678 USD to $4,220 USD

A
Cheapest Retailer
-
$678 USD
A
Retailer 2
-
$738 USD
View
A
Retailer 3
-
$892 USD
£702 GBP
View
A
Retailer 4
-
$944 USD
View
A
Retailer 5
-
$965 USD
View
B+
Retailer 6
-
$1,279 USD
View
B+
Retailer 7
-
$1,363 USD
View
B
Retailer 8
-
$2,211 USD
View
B
Retailer 9
-
$3,105 USD
View
B
Retailer 10
-
$3,331 USD
£2,623 GBP
View
B
Retailer 11
-
$3,484 USD
View
Most Expensive
B
Brilliant Earth
22337110A · Oct 30
$4,220 USD
View
11 more retailers have this diamond
Prices start from $678 USDSave up to $3,542 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
1.65ct Heart
$678 USD