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Radiant|Lab Grown|IGI

1.56ct D SI1 Radiant Lab Grown Diamond

GD • D/SI1 • IGI LG2517667860

Certificate IGI LG2517667860

Diamond specifications and retailer prices

From $635 NZD
$358 USD
As of October 27, 2026
Save $607 NZD (49%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $5,287 NZD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.56ct lab-grown radiant diamond

This 1.56ct 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 standard cut grade and certified by IGI LG2517667860 or 2517667860. Listed at 5 retailers as of October 27, 2026, with a 96% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.56
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG2517667860
Dimensions8.29 × 5.82 × 3.90 mm
L/W Ratio1.42
Top View
8.29 mm5.82 mm1.56 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG2517667860
Side View
Table 66.0%CrownGirdlePavilionCuletDepth 67.0%

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: $5,287 NZD|Low: $610 NZD|High: $5,287 NZD|Avg: $2,376 NZD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 8, 2026
Retailer 2$635 NZD
Retailer 4$736 NZD
Retailer 5$1,242 NZD
Retailer 6$1,684 NZD
Retailer 3$2,796 NZD
Retailer 7$3,398 NZD
Do Amore Diamonds$5,287 NZD

5 data points across 7 retailers

5 retailers$635 NZD to $1,242 NZD

A
Cheapest Retailer
-
$635 NZD
$358 USD
B+
Retailer 2
-
$736 NZD
$415 USD
View
B
Retailer 3
-
$1,242 NZD
$700 USD
View
Retailer 4
-
$2,796 NZD
$1,576 USD
View
Price last confirmed 7 days ago
Most Expensive
Do Amore Diamonds
7-1688583 · Oct 29
$5,287 NZD
$2,980 USD
View
Price under review
4 more retailers have this diamond
Prices start from $635 NZDSave up to $607 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
1.56ct Radiant
$635 NZD