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Radiant|Lab Grown|IGI

1.57ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG665445078

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG665445078

Diamond specifications and retailer prices

From €259 EUR
$289 USD
As of October 30, 2026
Save €2,606 EUR (91%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: €2,864 EUR at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 1.57ct lab-grown radiant diamond

This 1.57ct lab-grown radiant 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 LG665445078 or 665445078. Listed at 26 retailers as of October 30, 2026, with prices from €259 to €2,864, a €2,606 spread on the same certified stone. Diamond Quarter lists it at €2,864. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665445078
Dimensions8.55 × 5.71 × 3.73 mm
L/W Ratio1.50
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
8.55 mm5.71 mm1.57 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665445078
Side View
Table 62.0%Crown 44.1°Girdle: MediumPavilion 33.3°Culet: NoneDepth 65.3%

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: €631 EUR|Low: €248 EUR|High: €3,034 EUR|Avg: €1,021 EUR|-3.1%
Retailer 1
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Retailer 25
November 1, 2026
Retailer 3€259 EUR
Retailer 24€300 EUR
Retailer 5€308 EUR
Retailer 2€320 EUR
Retailer 7€456 EUR
Retailer 16€470 EUR
Retailer 8€499 EUR
Retailer 14€556 EUR
Retailer 12€575 EUR
Retailer 23€608 EUR
Retailer 1€631 EUR
Retailer 9€756 EUR
Retailer 15€798 EUR
Retailer 22€824 EUR
Retailer 6€985 EUR
Retailer 4€1,138 EUR
Retailer 11€1,233 EUR
Retailer 17€1,282 EUR
Retailer 10€1,319 EUR
Retailer 18€1,369 EUR
Retailer 21€1,426 EUR
Retailer 19€1,504 EUR
Retailer 13€2,291 EUR
Retailer 25€2,300 EUR
Retailer 20€2,632 EUR

34 data points across 25 retailers

26 retailers€259 EUR to €2,864 EUR

A
Cheapest Retailer
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€259 EUR
$289 USD
A
Retailer 2
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€300 EUR
$335 USD
View
A
Retailer 3
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€308 EUR
$344 USD
View
Final sale: no returns
A
Retailer 4
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€320 EUR
$358 USD
View
A
Retailer 5
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€456 EUR
$510 USD
View
A
Retailer 6
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€470 EUR
HK$4,100 HKD
View
A
Retailer 7
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€499 EUR
$558 USD
View
A
Retailer 8
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€556 EUR
$621 USD
View
A
Retailer 9
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€575 EUR
View
A
Retailer 10
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€608 EUR
ZAR 10,972 ZAR
View
A
Retailer 11
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€631 EUR
£555 GBP
View
A
Retailer 12
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€756 EUR
$845 USD
View
A
Retailer 13
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€798 EUR
$891 USD
View
A
Retailer 14
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€824 EUR
A$1,417 AUD
View
B+
Retailer 15
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€985 EUR
$1,100 USD
View
B+
Retailer 16
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€1,138 EUR
$1,271 USD
View
B+
Retailer 17
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€1,233 EUR
$1,377 USD
View
B+
Retailer 18
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€1,282 EUR
$1,433 USD
View
B+
Retailer 19
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€1,319 EUR
$1,473 USD
View
B+
Retailer 20
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€1,369 EUR
SGD 2,067 SGD
View
B+
Retailer 21
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€1,426 EUR
£1,254 GBP
View
B+
Retailer 22
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€1,504 EUR
A$2,585 AUD
View
B
Retailer 23
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€2,291 EUR
$2,560 USD
View
B
Retailer 24
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€2,300 EUR
$2,570 USD
View
B
Retailer 25
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€2,632 EUR
$2,940 USD
View
Most Expensive
B
Diamond Quarter
1.57IFDLG784962N · Oct 31
€2,864 EUR
£2,520 GBP
View
25 more retailers have this diamond
Prices start from €259 EURSave up to €2,606 EUR

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 Radiant
€259 EUR