CaratHunter
Plans
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 £304 GBP
$407 USD
As of October 29, 2026
Save £1,175 GBP (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,479 GBP 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 £304 to £1,479, a £1,175 spread on the same certified stone. MOH London lists it at £1,479. 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: £1,479 GBP|Low: £291 GBP|High: £1,488 GBP|Avg: £640 GBP|+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 30, 2026
Retailer 13£304 GBP
Retailer 3£340 GBP
Retailer 5£340 GBP
Retailer 7£376 GBP
Retailer 15£376 GBP
Retailer 9£485 GBP
Retailer 12£506 GBP
Retailer 2£562 GBP
Retailer 4£563 GBP
Retailer 8£578 GBP
Retailer 11£758 GBP
Retailer 10£904 GBP
Retailer 14£1,149 GBP
Retailer 6£1,210 GBP
MOH London£1,479 GBP

44 data points across 15 retailers

16 retailers£304 GBP to £1,479 GBP

A
Cheapest Retailer
-
£304 GBP
$407 USD
A
Retailer 2
-
£340 GBP
$455 USD
View
Final sale: no returns
A
Retailer 3
-
£340 GBP
$455 USD
View
A
Retailer 4
-
£376 GBP
$504 USD
View
A
Retailer 5
-
£376 GBP
$504 USD
View
B+
Retailer 6
-
£485 GBP
$650 USD
View
B+
Retailer 7
-
£506 GBP
$678 USD
View
B+
Retailer 8
-
£531 GBP
$712 USD
View
B+
Retailer 9
-
£562 GBP
View
B+
Retailer 10
-
£563 GBP
$755 USD
View
B+
Retailer 11
-
£578 GBP
€737 EUR
View
Retailer 12
-
£758 GBP
$1,015 USD
View
Price last confirmed 9 days ago
B
Retailer 13
-
£904 GBP
$1,211 USD
View
B
Retailer 14
-
£1,149 GBP
$1,540 USD
View
B
Retailer 15
-
£1,210 GBP
$1,621 USD
View
Most Expensive
B
MOH London
6455007454 · Oct 29
£1,479 GBP
View
15 more retailers have this diamond
Prices start from £304 GBPSave up to £1,175 GBP

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
£304 GBP