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 $407 USD
As of October 29, 2026
Save $1,574 USD (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,981 USD 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 $407 to $1,981, a $1,574 spread on the same certified stone. MOH London lists it at $1,981. 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
Color
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: $1,981 USD|Low: $390 USD|High: $1,994 USD|Avg: $857 USD|+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 29, 2026
Retailer 13$407 USD
Retailer 3$455 USD
Retailer 5$455 USD
Retailer 7$504 USD
Retailer 15$504 USD
Retailer 9$650 USD
Retailer 12$678 USD
Retailer 2$754 USD
Retailer 4$755 USD
Retailer 8$774 USD
Retailer 11$1,015 USD
Retailer 10$1,211 USD
Retailer 14$1,540 USD
Retailer 6$1,621 USD
MOH London$1,981 USD

43 data points across 15 retailers

16 retailers$407 USD to $1,981 USD

A
Cheapest Retailer
-
$407 USD
A
Retailer 2
-
$455 USD
View
Final sale: no returns
A
Retailer 3
-
$455 USD
View
A
Retailer 4
-
$504 USD
View
A
Retailer 5
-
$504 USD
View
B+
Retailer 6
-
$650 USD
View
B+
Retailer 7
-
$678 USD
View
B+
Retailer 8
-
$712 USD
View
B+
Retailer 9
-
$754 USD
£593 GBP
View
B+
Retailer 10
-
$755 USD
View
B+
Retailer 11
-
$774 USD
€737 EUR
View
B
Retailer 12
-
$1,015 USD
View
Price last confirmed 8 days ago
B
Retailer 13
-
$1,211 USD
View
B
Retailer 14
-
$1,540 USD
View
B
Retailer 15
-
$1,621 USD
View
Most Expensive
B
MOH London
6455007454 · Oct 29
$1,981 USD
£1,560 GBP
View
15 more retailers have this diamond
Prices start from $407 USDSave up to $1,574 USD

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
$407 USD