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1.89ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG771612517

Shape and cutting style on the report: Round brilliant

Certificate IGI LG771612517

Diamond specifications and retailer prices

From $526 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: $526 USD at Adiamor
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 Adiamor

About this 1.89ct lab-grown round diamond

This 1.89ct 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 LG771612517 or 771612517. Listed at a single retailer as of October 29, 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

1.89
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771612517
Dimensions7.96 × 7.99 × 4.86 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process.. Indications of post-growth treatment.
Top View
7.96 mm7.99 mm1.89 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG771612517
Side View
Table 58.0%Crown 34.2°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: $526 USD|Low: $526 USD|High: $2,770 USD|Avg: $1,374 USD|-34.9%
Adiamor
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 8, 2026
Adiamor$526 USD
Retailer 3$746 USD
Retailer 4$766 USD
Retailer 5$1,046 USD
Retailer 2$1,533 USD
Retailer 7$2,301 USD
Retailer 6$2,770 USD

54 data points across 7 retailers

1 retailer

B+
Adiamor
D-77929483 · Oct 29
$526 USD
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B+
1.89ct Round
$526 USD