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Heart|Lab Grown|IGI

1.51ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG825689925

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG825689925

Diamond specifications and retailer prices

From $343 USD
As of October 30, 2026
Save $3,046 USD (90%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,389 USD at Novita Diamonds · As of October 31, 2026
View at Novita Diamonds

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825689925 or 825689925. Listed at 22 retailers as of October 30, 2026, with prices from $343 to $3,389, a $3,046 spread on the same certified stone. Novita Diamonds lists it at $3,389. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.7°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825689925
Dimensions7.83 × 6.80 × 4.87 mm
L/W Ratio1.15
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
7.83 mm6.80 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825689925
Side View
Table 61.0%Crown 39.7°Girdle: MED-THKPavilion 41.3°Culet: NoneDepth 62.2%

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: $3,389 USD|Low: $343 USD|High: $3,439 USD|Avg: $1,039 USD|-1.5%
Novita Diamonds
Retailer 2
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Retailer 21
November 2, 2026
Retailer 6$343 USD
Retailer 11$384 USD
Retailer 21$398 USD
Retailer 4$425 USD
Retailer 5$425 USD
Retailer 18$474 USD
Retailer 19$580 USD
Retailer 16$588 USD
Retailer 2$733 USD
Retailer 13$764 USD
Retailer 17$987 USD
Retailer 9$1,024 USD
Retailer 20$1,247 USD
Retailer 14$1,356 USD
Retailer 12$1,361 USD
Retailer 7$1,367 USD
Retailer 10$1,410 USD
Retailer 3$1,498 USD
Retailer 8$1,650 USD
Retailer 15$1,704 USD
Novita Diamonds$3,389 USD

37 data points across 21 retailers

22 retailers$343 USD to $3,389 USD

A
Cheapest Retailer
-
$343 USD
A
Retailer 2
-
$384 USD
View
Final sale: no returns
A
Retailer 3
-
$398 USD
View
A
Retailer 4
-
$425 USD
View
Retailer 5
-
$425 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$474 USD
HK$3,700 HKD
View
A
Retailer 7
-
$580 USD
View
A
Retailer 8
-
$588 USD
View
A
Retailer 9
-
$733 USD
ZAR 11,848 ZAR
View
A
Retailer 10
-
$764 USD
£601 GBP
View
A
Retailer 11
-
$987 USD
A$1,519 AUD
View
A
Retailer 12
-
$1,024 USD
View
B+
Retailer 13
-
$1,247 USD
View
B+
Retailer 14
-
$1,356 USD
View
B+
Retailer 15
-
$1,361 USD
SGD 1,839 SGD
View
B+
Retailer 16
-
$1,367 USD
View
B+
Retailer 17
-
$1,410 USD
View
B+
Retailer 18
-
$1,498 USD
View
B+
Retailer 19
-
$1,650 USD
View
B+
Retailer 20
-
$1,704 USD
£1,342 GBP
View
B
Retailer 21
-
$2,845 USD
£2,240 GBP
View
Most Expensive
B
Novita Diamonds
cert_825689925 · Oct 31
$3,389 USD
A$5,214 AUD
View
21 more retailers have this diamond
Prices start from $343 USDSave up to $3,046 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
1.51ct Heart
$343 USD