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Heart|Lab Grown|IGI

1.03ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG628451812

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG628451812

Diamond specifications and retailer prices

From $265 USD
As of October 30, 2026
Save $2,095 USD (89%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: $2,360 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.03ct lab-grown heart diamond

This 1.03ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG628451812 or 628451812. Listed at 30 retailers as of October 30, 2026, with prices from $265 to $2,360, a $2,095 spread on the same certified stone. Do Amore Diamonds lists it at $2,360. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.5°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628451812
Dimensions6.04 × 7.03 × 4.19 mm
L/W Ratio1.16
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
6.04 mm7.03 mm1.03 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628451812
Side View
Table 59.0%Crown 39.5°Girdle: STK-THKPavilion 38.9°Culet: NoneDepth 59.6%

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: $2,360 USD|Low: $265 USD|High: $3,180 USD|Avg: $885 USD|-25.8%
Do Amore Diamonds
Retailer 2
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Retailer 22
November 1, 2026
Retailer 5$265 USD
Retailer 20$315 USD
Retailer 4$378 USD
Retailer 14$416 USD
Retailer 15$439 USD
Retailer 8$458 USD
Retailer 18$460 USD
Retailer 19$486 USD
Retailer 6$512 USD
Retailer 9$572 USD
Retailer 17$624 USD
Retailer 2$643 USD
Retailer 10$816 USD
Retailer 22$824 USD
Retailer 3$1,010 USD
Retailer 12$1,187 USD
Retailer 11$1,332 USD
Retailer 7$1,399 USD
Retailer 16$1,463 USD
Retailer 13$1,466 USD
Retailer 21$1,680 USD
Do Amore Diamonds$2,360 USD

36 data points across 22 retailers

30 retailers$265 USD to $2,360 USD

A
Cheapest Retailer
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$265 USD
Retailer 2
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$265 USD
View
Price last confirmed 24 days ago
Retailer 3
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$265 USD
View
Price last confirmed 20 days ago
A
Retailer 4
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$315 USD
View
Final sale: no returns
Retailer 5
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$329 USD
View
Price last confirmed 29 days ago
Retailer 6
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$329 USD
View
Price last confirmed 21 days ago
Retailer 7
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$359 USD
View
Price last confirmed 32 days ago
Retailer 8
-
$378 USD
£298 GBP
View
Price last confirmed 17 days ago
Retailer 9
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$416 USD
View
Price last confirmed 33 days ago
Retailer 10
-
$439 USD
View
Price last confirmed 34 days ago
A
Retailer 11
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$458 USD
View
A
Retailer 12
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$460 USD
View
A
Retailer 13
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$486 USD
HK$3,800 HKD
View
A
Retailer 14
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$512 USD
View
B+
Retailer 15
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$572 USD
View
B+
Retailer 16
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$624 USD
ZAR 10,077 ZAR
View
B+
Retailer 17
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$643 USD
£506 GBP
View
B+
Retailer 18
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$816 USD
View
B+
Retailer 19
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$824 USD
A$1,268 AUD
View
B
Retailer 20
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$1,010 USD
View
Retailer 21
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$1,167 USD
View
Price last confirmed 21 days ago
B
Retailer 22
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$1,167 USD
View
B
Retailer 23
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$1,187 USD
SGD 1,604 SGD
View
B
Retailer 24
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$1,332 USD
View
B
Retailer 25
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$1,399 USD
View
B
Retailer 26
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$1,463 USD
£1,152 GBP
View
B
Retailer 27
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$1,466 USD
A$2,255 AUD
View
Retailer 28
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$1,577 USD
View
Price last confirmed 31 days ago
Retailer 29
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$1,680 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Do Amore Diamonds
27-1C398A065 · Oct 31
$2,360 USD
View
29 more retailers have this diamond
Prices start from $265 USDSave up to $2,095 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
1.03ct Heart
$265 USD