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Heart|Lab Grown|IGI

0.91ct D SI1 Heart Lab Grown Diamond

EX • D/SI1 • IGI LG547249509

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG547249509

Diamond specifications and retailer prices

From $271 USD
£214 GBP
As of October 30, 2026
Save $693 USD (72%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $964 USD at MOH London · As of October 29, 2026
View at MOH London

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG547249509 or 547249509. Listed at 11 retailers as of October 29, 2026, with prices from $271 to $964, a $693 spread on the same certified stone. MOH London lists it at $964. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.91
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG547249509
Dimensions6.16 × 6.94 × 3.71 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
6.16 mm6.94 mm0.91 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG547249509
Side View
Table 59.0%Crown 37.3°Girdle: MED-STKPavilion 37.5°Culet: NoneDepth 53.5%

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: $964 USD|Low: $205 USD|High: $970 USD|Avg: $454 USD|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 5$205 USD
Retailer 3$271 USD
Retailer 6$274 USD
Retailer 2$364 USD
Retailer 8$368 USD
Retailer 9$437 USD
Retailer 7$518 USD
Retailer 4$697 USD
MOH London$964 USD

27 data points across 9 retailers

11 retailers$271 USD to $964 USD

Retailer 1
-
$159 USD
Price last confirmed 26 days ago
Retailer 2
-
$192 USD
View
Price last confirmed 32 days ago
Retailer 3
-
$205 USD
View
Price last confirmed 26 days ago
A
Retailer 4
-
$271 USD
£214 GBP
View
B+
Retailer 5
-
$274 USD
View
B+
Retailer 6
-
$364 USD
£286 GBP
View
B+
Retailer 7
-
$368 USD
View
B
Retailer 8
-
$518 USD
View
Retailer 9
-
$659 USD
View
Price last confirmed 26 days ago
B
Retailer 10
-
$697 USD
View
Most Expensive
B
MOH London
LG547249509 · Oct 29
$964 USD
£759 GBP
View
10 more retailers have this diamond
Prices start from $271 USDSave up to $693 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
$271 USD