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Heart|Lab Grown|IGI

0.91ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG639414592

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG639414592

Diamond specifications and retailer prices

From $231 USD
As of November 5, 2026
Save $1,349 USD (85%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,580 USD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 0.91ct lab-grown heart diamond

This 0.91ct lab-grown heart sits in the just-under-one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG639414592 or 639414592. Listed at 7 retailers as of November 2, 2026, with prices from $231 to $1,580, a $1,349 spread on the same certified stone. Brilliant Earth lists it at $1,580. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.91
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.9°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639414592
Dimensions5.94 × 6.69 × 3.76 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizePointed
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
5.94 mm6.69 mm0.91 ctD / IF
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG639414592
Side View
Table 59.0%Crown 37.9°Girdle: STK-THKPavilion 36.2°Culet: NoneDepth 56.2%

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: Nov 5
Current: $1,580 USD|Low: $47 USD|High: $1,630 USD|Avg: $632 USD|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 7$47 USD
Retailer 6$231 USD
Retailer 5$417 USD
Retailer 4$473 USD
Retailer 3$771 USD
Retailer 2$1,115 USD
Brilliant Earth$1,580 USD

31 data points across 7 retailers

7 retailers$231 USD to $1,580 USD

A
Cheapest Retailer
-
$231 USD
Final sale: no returns
A
Retailer 2
-
$417 USD
View
A
Retailer 3
-
$473 USD
View
B+
Retailer 4
-
$632 USD
View
B+
Retailer 5
-
$771 USD
View
B+
Retailer 6
-
$1,115 USD
View
Most Expensive
B
Brilliant Earth
15346653A · Nov 2
$1,580 USD
View
6 more retailers have this diamond
Prices start from $231 USDSave up to $1,349 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
0.91ct Heart
$231 USD