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Radiant|Lab Grown|IGI

1.56ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG613383157

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

Certificate IGI LG613383157

Diamond specifications and retailer prices

From $1,299 NZD
£567 GBP
As of November 5, 2026
1 retailer carries this diamond
Only listing: $1,299 NZD at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG613383157 or 613383157. Listed at a single retailer as of November 5, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.56
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.5°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG613383157
Dimensions8.18 × 5.73 × 3.85 mm
L/W Ratio1.43
Culet sizePointed
Top View
8.18 mm5.73 mm1.56 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG613383157
Side View
Table 66.0%Crown 44.5°Girdle: MediumPavilion 35.4°Culet: NoneDepth 67.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: $2,255 NZD|Low: $247 NZD|High: $3,229 NZD|Avg: $1,292 NZD|-30.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
September 26, 2026
Retailer 3$574 NZD
Retailer 4$667 NZD
Retailer 2$860 NZD
Retailer 6$1,093 NZD
Retailer 7$1,257 NZD
Retailer 5$1,432 NZD
Retailer 1$2,255 NZD

77 data points across 7 retailers

1 retailer

B
Diamond Quarter
1.56SI1F6157F333N · Nov 5
$1,299 NZD
£567 GBP
View

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.

B
1.56ct Radiant
$1,299 NZD