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Radiant|Lab Grown|IGI

1.57ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG474119434

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

Certificate IGI LG474119434

Diamond specifications and retailer prices

From £146 GBP
$195 USD
As of October 27, 2026
Save £1,250 GBP (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,396 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG474119434 or 474119434. Listed at 9 retailers as of October 27, 2026, with prices from £146 to £1,396, a £1,250 spread on the same certified stone. Do Amore Diamonds lists it at £1,396. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.57
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48.7°
Pavilion angle31.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG474119434
Dimensions7.23 × 5.79 × 3.96 mm
L/W Ratio1.25
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
7.23 mm5.79 mm1.57 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG474119434
Side View
Table 67.5%Crown 48.7°Girdle: MED-STKPavilion 31.2°Culet: NoneDepth 68.4%

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 27
Current: £1,396 GBP|Low: £113 GBP|High: £1,396 GBP|Avg: £498 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 6£146 GBP
Retailer 10£163 GBP
Retailer 9£169 GBP
Retailer 2£223 GBP
Retailer 8£315 GBP
Retailer 11£425 GBP
Retailer 5£582 GBP
Retailer 3£594 GBP
Retailer 7£640 GBP
Retailer 4£799 GBP
Do Amore Diamonds£1,396 GBP

35 data points across 11 retailers

9 retailers£146 GBP to £1,396 GBP

A
Cheapest Retailer
-
£146 GBP
$195 USD
A
Retailer 2
-
£163 GBP
$218 USD
View
Final sale: no returns
A
Retailer 3
-
£169 GBP
$226 USD
View
A
Retailer 4
-
£223 GBP
View
B+
Retailer 5
-
£315 GBP
$422 USD
View
B
Retailer 6
-
£582 GBP
$780 USD
View
B
Retailer 7
-
£640 GBP
$858 USD
View
B
Retailer 8
-
£799 GBP
View
Most Expensive
B
Do Amore Diamonds
27-3B8728BE6 · Oct 29
£1,396 GBP
$1,870 USD
View
8 more retailers have this diamond
Prices start from £146 GBPSave up to £1,250 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 Radiant
£146 GBP