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Round|Lab Grown|GIA

1.73ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 6455007454

Certificate GIA 6455007454

Diamond specifications and retailer prices

From $579 AUD
$407 USD
As of October 29, 2026
Save $2,241 AUD (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,820 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 1.73ct lab-grown round diamond

This 1.73ct 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 6455007454. Listed at 16 retailers as of October 29, 2026, with prices from $579 to $2,820, a $2,241 spread on the same certified stone. MOH London lists it at $2,820. 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

1.73
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 6455007454
Dimensions7.70 × 7.66 × 4.74 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.70 mm7.66 mm1.73 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6455007454
Side View
Table 58.0%Crown 34.5°Girdle: NUL-NULPavilion 40.8°Culet: NoneDepth 61.7%

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: $2,820 AUD|Low: $555 AUD|High: $2,839 AUD|Avg: $1,238 AUD|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 31, 2026
Retailer 13$579 AUD
Retailer 3$648 AUD
Retailer 5$648 AUD
Retailer 7$717 AUD
Retailer 15$717 AUD
Retailer 10$925 AUD
Retailer 12$965 AUD
Retailer 9$1,073 AUD
Retailer 4$1,075 AUD
Retailer 2$1,099 AUD
Retailer 11$1,445 AUD
Retailer 8$1,623 AUD
Retailer 14$2,192 AUD
Retailer 6$2,308 AUD
MOH London$2,820 AUD

44 data points across 15 retailers

16 retailers$579 AUD to $2,820 AUD

A
Cheapest Retailer
-
$579 AUD
$407 USD
A
Retailer 2
-
$648 AUD
$455 USD
View
Final sale: no returns
A
Retailer 3
-
$648 AUD
$455 USD
View
A
Retailer 4
-
$717 AUD
$504 USD
View
A
Retailer 5
-
$717 AUD
$504 USD
View
B+
Retailer 6
-
$925 AUD
$650 USD
View
B+
Retailer 7
-
$965 AUD
$678 USD
View
B+
Retailer 8
-
$1,014 AUD
$712 USD
View
B+
Retailer 9
-
$1,073 AUD
£593 GBP
View
B+
Retailer 10
-
$1,075 AUD
$755 USD
View
B+
Retailer 11
-
$1,099 AUD
€735 EUR
View
Retailer 12
-
$1,445 AUD
$1,015 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
$1,623 AUD
$1,140 USD
View
B
Retailer 14
-
$2,192 AUD
$1,540 USD
View
B
Retailer 15
-
$2,308 AUD
$1,621 USD
View
Most Expensive
B
MOH London
6455007454 · Oct 29
$2,820 AUD
£1,560 GBP
View
15 more retailers have this diamond
Prices start from $579 AUDSave up to $2,241 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
1.73ct Round
$579 AUD