Heart|Lab Grown|IGI

1.91ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG818681481

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818681481

Diamond specifications and retailer prices

From $707 USD
As of October 30, 2026
Save $5,573 USD (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,280 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.91ct lab-grown heart diamond

This 1.91ct 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 LG818681481 or 818681481. Listed at 12 retailers as of October 29, 2026, with prices from $707 to $6,280, a $5,573 spread on the same certified stone. Do Amore Diamonds lists it at $6,280. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818681481
Dimensions7.66 × 8.39 × 5.22 mm
L/W Ratio1.10
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
7.66 mm8.39 mm1.91 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818681481
Side View
Table 56.0%Crown 35.6°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 62.2%

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: $6,280 USD|Low: $707 USD|High: $10,800 USD|Avg: $3,224 USD|-41.9%
Do Amore 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
October 29, 2026
Retailer 7$707 USD
Retailer 12$769 USD
Retailer 13$1,020 USD
Retailer 8$1,333 USD
Retailer 3$1,335 USD
Retailer 2$1,532 USD
Retailer 10$1,929 USD
Retailer 9$2,020 USD
Retailer 11$2,545 USD
Retailer 6$3,411 USD
Retailer 5$5,595 USD
Retailer 4$6,070 USD
Do Amore Diamonds$6,280 USD

22 data points across 13 retailers

12 retailers$707 USD to $6,280 USD

A
Cheapest Retailer
-
$707 USD
A
Retailer 2
-
$769 USD
View
A
Retailer 3
-
$1,020 USD
View
A
Retailer 4
-
$1,333 USD
View
A
Retailer 5
-
$1,335 USD
View
B+
Retailer 6
-
$1,532 USD
€1,459 EUR
View
B+
Retailer 7
-
$1,929 USD
A$2,968 AUD
View
B+
Retailer 8
-
$2,020 USD
View
B+
Retailer 9
-
$2,545 USD
View
B
Retailer 10
-
$3,411 USD
£2,686 GBP
View
B
Retailer 11
-
$6,070 USD
View
Most Expensive
B
Do Amore Diamonds
27-B1165FDF8 · Oct 29
$6,280 USD
View
11 more retailers have this diamond
Prices start from $707 USDSave up to $5,573 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
1.91ct Heart
$707 USD