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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 £256 GBP
$343 USD
As of October 30, 2026
Save £2,273 GBP (90%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,529 GBP 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 £256 to £2,529, a £2,273 spread on the same certified stone. Novita Diamonds lists it at £2,529. 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
Colour
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

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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: £2,529 GBP|Low: £256 GBP|High: £2,567 GBP|Avg: £775 GBP|-1.5%
Novita Diamonds
Retailer 2
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Retailer 21
November 2, 2026
Retailer 6£256 GBP
Retailer 11£287 GBP
Retailer 21£297 GBP
Retailer 4£317 GBP
Retailer 5£317 GBP
Retailer 18£353 GBP
Retailer 19£433 GBP
Retailer 16£439 GBP
Retailer 2£547 GBP
Retailer 13£570 GBP
Retailer 17£737 GBP
Retailer 9£764 GBP
Retailer 20£931 GBP
Retailer 14£1,012 GBP
Retailer 12£1,016 GBP
Retailer 7£1,020 GBP
Retailer 10£1,052 GBP
Retailer 3£1,118 GBP
Retailer 8£1,231 GBP
Retailer 15£1,272 GBP
Novita Diamonds£2,529 GBP

37 data points across 21 retailers

22 retailers£256 GBP to £2,529 GBP

A
Cheapest Retailer
-
£256 GBP
$343 USD
A
Retailer 2
-
£287 GBP
$384 USD
View
Final sale: no returns
A
Retailer 3
-
£297 GBP
$398 USD
View
A
Retailer 4
-
£317 GBP
$425 USD
View
Retailer 5
-
£317 GBP
$425 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
£353 GBP
HK$3,700 HKD
View
A
Retailer 7
-
£433 GBP
$580 USD
View
A
Retailer 8
-
£439 GBP
$588 USD
View
A
Retailer 9
-
£547 GBP
ZAR 11,848 ZAR
View
A
Retailer 10
-
£570 GBP
View
A
Retailer 11
-
£737 GBP
A$1,519 AUD
View
A
Retailer 12
-
£764 GBP
$1,024 USD
View
B+
Retailer 13
-
£931 GBP
$1,247 USD
View
B+
Retailer 14
-
£1,012 GBP
$1,356 USD
View
B+
Retailer 15
-
£1,016 GBP
SGD 1,839 SGD
View
B+
Retailer 16
-
£1,020 GBP
$1,367 USD
View
B+
Retailer 17
-
£1,052 GBP
$1,410 USD
View
B+
Retailer 18
-
£1,118 GBP
$1,498 USD
View
B+
Retailer 19
-
£1,231 GBP
$1,650 USD
View
B+
Retailer 20
-
£1,272 GBP
View
B
Retailer 21
-
£2,123 GBP
View
Most Expensive
B
Novita Diamonds
cert_825689925 · Oct 31
£2,529 GBP
A$5,214 AUD
View
21 more retailers have this diamond
Prices start from £256 GBPSave up to £2,273 GBP

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
£256 GBP