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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 $722 NZD
$407 USD
As of October 29, 2026
Save $2,793 NZD (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,515 NZD 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 $722 to $3,515, a $2,793 spread on the same certified stone. MOH London lists it at $3,515. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $3,515 NZD|Low: $692 NZD|High: $3,538 NZD|Avg: $1,543 NZD|+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$722 NZD
Retailer 3$807 NZD
Retailer 5$807 NZD
Retailer 7$894 NZD
Retailer 15$894 NZD
Retailer 10$1,153 NZD
Retailer 12$1,203 NZD
Retailer 9$1,337 NZD
Retailer 4$1,340 NZD
Retailer 2$1,369 NZD
Retailer 11$1,801 NZD
Retailer 8$2,023 NZD
Retailer 14$2,732 NZD
Retailer 6$2,876 NZD
MOH London$3,515 NZD

44 data points across 15 retailers

16 retailers$722 NZD to $3,515 NZD

A
Cheapest Retailer
-
$722 NZD
$407 USD
A
Retailer 2
-
$807 NZD
$455 USD
View
Final sale: no returns
A
Retailer 3
-
$807 NZD
$455 USD
View
A
Retailer 4
-
$894 NZD
$504 USD
View
A
Retailer 5
-
$894 NZD
$504 USD
View
B+
Retailer 6
-
$1,153 NZD
$650 USD
View
B+
Retailer 7
-
$1,203 NZD
$678 USD
View
B+
Retailer 8
-
$1,263 NZD
$712 USD
View
B+
Retailer 9
-
$1,337 NZD
£593 GBP
View
B+
Retailer 10
-
$1,340 NZD
$755 USD
View
B+
Retailer 11
-
$1,369 NZD
€735 EUR
View
Retailer 12
-
$1,801 NZD
$1,015 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
$2,023 NZD
$1,140 USD
View
B
Retailer 14
-
$2,732 NZD
$1,540 USD
View
B
Retailer 15
-
$2,876 NZD
$1,621 USD
View
Most Expensive
B
MOH London
6455007454 · Oct 29
$3,515 NZD
£1,560 GBP
View
15 more retailers have this diamond
Prices start from $722 NZDSave up to $2,793 NZD

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
$722 NZD