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Heart|Lab Grown|IGI

0.91ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG670431145

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG670431145

Diamond specifications and retailer prices

From $442 SGD
$346 USD
As of October 30, 2026
Save $1,701 SGD (79%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $2,143 SGD at MOH London · As of October 26, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG670431145 or 670431145. Listed at 20 retailers as of October 26, 2026, with prices from $442 to $2,143, a $1,701 spread on the same certified stone. MOH London lists it at $2,143. 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
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG670431145
Dimensions5.82 × 6.86 × 4.12 mm
L/W Ratio1.18
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
5.82 mm6.86 mm0.91 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG670431145
Side View
Table 61.0%Crown 37.8°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 60.1%

Caratlytics Score

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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: $2,143 SGD|Low: $421 SGD|High: $2,202 SGD|Avg: $1,145 SGD|-1.5%
MOH London
Retailer 2
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Retailer 4
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Retailer 8
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Retailer 11
Retailer 12
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Retailer 17
Retailer 18
Retailer 19
October 31, 2026
Retailer 18$442 SGD
Retailer 2$493 SGD
Retailer 10$513 SGD
Retailer 5$547 SGD
Retailer 9$547 SGD
Retailer 17$799 SGD
Retailer 3$844 SGD
Retailer 7$880 SGD
Retailer 13$984 SGD
Retailer 15$991 SGD
Retailer 16$1,062 SGD
Retailer 14$1,360 SGD
Retailer 6$1,429 SGD
Retailer 12$1,609 SGD
Retailer 19$1,760 SGD
Retailer 11$1,815 SGD
Retailer 4$2,058 SGD
Retailer 8$2,120 SGD
MOH London$2,143 SGD

40 data points across 19 retailers

20 retailers$442 SGD to $2,143 SGD

A
Cheapest Retailer
-
$442 SGD
$346 USD
A
Retailer 2
-
$493 SGD
$386 USD
View
Final sale: no returns
A
Retailer 3
-
$513 SGD
$401 USD
View
A
Retailer 4
-
$547 SGD
$428 USD
View
A
Retailer 5
-
$547 SGD
$428 USD
View
A
Retailer 6
-
$799 SGD
$625 USD
View
B+
Retailer 7
-
$844 SGD
$660 USD
View
B+
Retailer 8
-
$880 SGD
$688 USD
View
B+
Retailer 9
-
$984 SGD
£606 GBP
View
B+
Retailer 10
-
$991 SGD
ZAR 12,521 ZAR
View
B+
Retailer 11
-
$1,062 SGD
A$1,278 AUD
View
B+
Retailer 12
-
$1,360 SGD
A$1,637 AUD
View
B
Retailer 13
-
$1,429 SGD
$1,118 USD
View
B+
Retailer 14
-
$1,609 SGD
A$1,936 AUD
View
B
Retailer 15
-
$1,760 SGD
$1,377 USD
View
B
Retailer 16
-
$1,815 SGD
$1,420 USD
View
Retailer 17
-
$2,058 SGD
$1,610 USD
View
Price last confirmed 16 days ago
B
Retailer 18
-
$2,083 SGD
$1,629 USD
View
B
Retailer 19
-
$2,120 SGD
$1,658 USD
View
Most Expensive
B
MOH London
LG670431145 · Oct 26
$2,143 SGD
£1,320 GBP
View
19 more retailers have this diamond
Prices start from $442 SGDSave up to $1,701 SGD

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
$442 SGD