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1.90ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 6237056730

Certificate GIA 6237056730

Diamond specifications and retailer prices

From $1,159 AUD
$814 USD
As of October 30, 2026
Save $1,396 AUD (55%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,555 AUD at Yorxs · As of October 29, 2026
View at Yorxs

About this 1.9ct lab-grown round diamond

This 1.9ct 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 GIA 6237056730. Listed at 2 retailers as of October 29, 2026, with prices from $1,159 to $2,555, a $1,396 spread on the same certified stone. Yorxs lists it at $2,555. 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

1.90
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 6237056730
Dimensions7.97 × 7.99 × 4.87 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
7.97 mm7.99 mm1.90 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6237056730
Side View
Table 58.0%Crown 34°GirdlePavilion 40.8°Culet: NoneDepth 61.0%

Caratlytics Score

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

Last verified: Oct 30
Current: $1,159 AUD|Low: $1,159 AUD|High: $2,555 AUD|Avg: $1,844 AUD
Retailer 1
Yorxs
October 29, 2026
Retailer 1$1,159 AUD
Yorxs$2,555 AUD

14 data points across 2 retailers

2 retailers$1,159 AUD to $2,555 AUD

B+
Cheapest Retailer
-
$1,159 AUD
$814 USD
Final sale: no returns
Most Expensive
B
Yorxs
358148208 · Oct 29
$2,555 AUD
€1,709 EUR
View
1 more retailer has this diamond
Prices start from $1,159 AUDSave up to $1,396 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.

B+
1.90ct Round
$1,159 AUD