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Heart|Lab Grown|IGI

1.57ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG768650527

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG768650527

Diamond specifications and retailer prices

From £489 GBP
$655 USD
As of October 30, 2026
Save £1,989 GBP (80%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,663 GBP at Novita Diamonds · As of October 8, 2026
View at Novita Diamonds

About this 1.57ct lab-grown heart diamond

This 1.57ct 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 LG768650527 or 768650527. Listed at 9 retailers as of October 28, 2026, with a 407% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768650527
Dimensions8.15 × 8.15 × 6.94 mm
L/W Ratio1.00
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
8.15 mm8.15 mm1.57 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768650527
Side View
Table 58.0%Crown 35.4°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 57.9%

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: £2,663 GBP|Low: £489 GBP|High: £2,668 GBP|Avg: £1,220 GBP|+2.9%
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 3£489 GBP
Retailer 7£547 GBP
Retailer 2£596 GBP
Retailer 8£831 GBP
Retailer 10£1,064 GBP
Retailer 9£1,196 GBP
Retailer 6£1,273 GBP
Retailer 4£1,423 GBP
Retailer 5£2,478 GBP
Novita Diamonds£2,663 GBP

44 data points across 10 retailers

9 retailers£489 GBP to £2,478 GBP

A
Cheapest Retailer
-
£489 GBP
$655 USD
A
Retailer 2
-
£547 GBP
$733 USD
View
A
Retailer 3
-
£596 GBP
View
A
Retailer 4
-
£831 GBP
$1,114 USD
View
B+
Retailer 5
-
£1,196 GBP
$1,603 USD
View
B+
Retailer 6
-
£1,273 GBP
$1,706 USD
View
B+
Retailer 7
-
£1,423 GBP
View
B
Retailer 8
-
£2,478 GBP
$3,320 USD
View
Most Expensive
Novita Diamonds
cert_768650527 · Oct 8
£2,663 GBP
A$5,489 AUD
View
Price last confirmed 22 days ago
8 more retailers have this diamond
Prices start from £489 GBPSave up to £1,989 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
1.57ct Heart
£489 GBP