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Round|Lab Grown|IGI

1.55ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG660459214

Certificate IGI LG660459214

Diamond specifications and retailer prices

From $1,770 NZD
As of November 6, 2026
Save $632 NZD (26%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,402 NZD at Zales · As of November 4, 2026
View at Zales

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round 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 LG660459214 or 660459214. Listed at 4 retailers as of November 4, 2026, with prices from $1,770 to $2,402, a $632 spread on the same certified stone. Zales lists it at $2,402. 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

1.55
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG660459214
Dimensions7.47 × 7.51 × 4.52 mm
L/W Ratio1.01
Top View
7.47 mm7.51 mm1.55 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660459214
Side View
Table 58.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.4%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,770 NZD|Low: $1,770 NZD|High: $3,433 NZD|Avg: $2,294 NZD|-48.4%
Retailer 1
Retailer 2
Retailer 3
Zales
November 6, 2026
Retailer 1$1,770 NZD
Retailer 2$1,770 NZD
Retailer 3$2,402 NZD
Zales$2,402 NZD

2 data points across 4 retailers

4 retailers$1,770 NZD to $2,402 NZD

B
Cheapest Retailer
-
$1,770 NZD
B
Retailer 2
-
$1,770 NZD
View
B
Retailer 3
-
$2,402 NZD
View
Most Expensive
B
Zales
523931874 · Nov 4
$2,402 NZD
$1,350 USD
View
3 more retailers have this diamond
Prices start from $1,770 NZDSave up to $632 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.

B
1.55ct Round
$1,770 NZD