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Round|Lab Grown|IGI

1.89ct D SI1 Round Lab Grown Diamond

ID • D/SI1

Diamond specifications and retailer prices

From $743 AUD
$522 USD
As of October 29, 2026
Save $2,381 AUD (76%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $3,124 AUD at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

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. Listed at 3 retailers as of October 29, 2026, with prices from $743 to $3,124, a $2,381 spread on the same certified stone. The Diamond Guys lists it at $3,124. 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
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions7.96 × 7.99 × 4.86 mm
L/W Ratio1.00
Top View
7.96 mm7.99 mm1.89 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 60.9%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: $2,165 AUD|Low: $743 AUD|High: $3,124 AUD|Avg: $2,120 AUD|-23.3%
Retailer 1
Retailer 2
The Diamond Guys
October 8, 2026
Retailer 2$743 AUD
Retailer 1$2,165 AUD
The Diamond Guys$3,124 AUD

2 data points across 3 retailers

3 retailers$743 AUD to $3,124 AUD

A
Cheapest Retailer
-
$743 AUD
$522 USD
B
Retailer 2
-
$2,165 AUD
CA$2,113 CAD
View
Most Expensive
C
The Diamond Guys
1932674242 · Oct 30
$3,124 AUD
$2,195 USD
View
2 more retailers have this diamond
Prices start from $743 AUDSave up to $2,381 AUD

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
1.89ct Round
$743 AUD