Heart|Lab Grown|IGI

1.21ct D VVS1 Heart Lab Grown Diamond

VG • D/VVS1 • IGI LG831687348

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831687348

Diamond specifications and retailer prices

From $234 USD
As of November 1, 2026
Save $1,196 USD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,430 USD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.21ct lab-grown heart diamond

This 1.21ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG831687348 or 831687348. Listed at 11 retailers as of November 1, 2026, with prices from $234 to $1,430, a $1,196 spread on the same certified stone. Brilliant Earth lists it at $1,430. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
D
Color
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle36°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831687348
Dimensions6.80 × 7.53 × 4.19 mm
L/W Ratio1.11
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
6.80 mm7.53 mm1.21 ctD / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831687348
Side View
Table 60.0%Crown 39.6°Girdle: MED-THKPavilion 36°Culet: NoneDepth 55.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $675 USD|Low: $234 USD|High: $1,041 USD|Avg: $597 USD|-19.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 2$234 USD
Retailer 7$436 USD
Retailer 10$446 USD
Retailer 5$448 USD
Retailer 4$475 USD
Retailer 8$583 USD
Retailer 3$634 USD
Retailer 1$675 USD
Retailer 9$887 USD
Retailer 6$1,040 USD

9 data points across 10 retailers

11 retailers$234 USD to $1,430 USD

A
Cheapest Retailer
-
$234 USD
Final sale: no returns
A
Retailer 2
-
$436 USD
€415 EUR
View
B+
Retailer 3
-
$446 USD
View
B+
Retailer 4
-
$448 USD
ZAR 7,238 ZAR
View
B+
Retailer 5
-
$475 USD
£374 GBP
View
B+
Retailer 6
-
$583 USD
View
B+
Retailer 7
-
$634 USD
A$976 AUD
View
B+
Retailer 8
-
$675 USD
View
B
Retailer 9
-
$887 USD
View
B
Retailer 10
-
$1,040 USD
£819 GBP
View
Most Expensive
B
Brilliant Earth
22262720A · Nov 2
$1,430 USD
View
10 more retailers have this diamond
Prices start from $234 USDSave up to $1,196 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
1.21ct Heart
$234 USD