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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 $346 NZD
$195 USD
As of October 27, 2026
Save $2,972 NZD (90%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $3,318 NZD 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 $346 to $3,318, a $2,972 spread on the same certified stone. Do Amore Diamonds lists it at $3,318. 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

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $3,318 NZD|Low: $268 NZD|High: $3,318 NZD|Avg: $1,184 NZD
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$346 NZD
Retailer 10$387 NZD
Retailer 9$401 NZD
Retailer 2$530 NZD
Retailer 8$749 NZD
Retailer 11$1,011 NZD
Retailer 5$1,384 NZD
Retailer 3$1,413 NZD
Retailer 7$1,522 NZD
Retailer 4$1,900 NZD
Do Amore Diamonds$3,318 NZD

35 data points across 11 retailers

9 retailers$346 NZD to $3,318 NZD

A
Cheapest Retailer
-
$346 NZD
$195 USD
A
Retailer 2
-
$387 NZD
$218 USD
View
Final sale: no returns
A
Retailer 3
-
$401 NZD
$226 USD
View
A
Retailer 4
-
$530 NZD
£235 GBP
View
B+
Retailer 5
-
$749 NZD
$422 USD
View
B
Retailer 6
-
$1,384 NZD
$780 USD
View
B
Retailer 7
-
$1,522 NZD
$858 USD
View
B
Retailer 8
-
$1,900 NZD
£843 GBP
View
Most Expensive
B
Do Amore Diamonds
27-3B8728BE6 · Oct 29
$3,318 NZD
$1,870 USD
View
8 more retailers have this diamond
Prices start from $346 NZDSave up to $2,972 NZD

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
$346 NZD