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Princess|Lab Grown|IGI

1.73ct D SI1 Princess Lab Grown Diamond

ID • D/SI1 • IGI LG619437868

Shape and cutting style on the report: Princess cut

Certificate IGI LG619437868

Diamond specifications and retailer prices

From £196 GBP
$262 USD
As of October 30, 2026
Save £1,051 GBP (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,246 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.73ct lab-grown princess diamond

This 1.73ct lab-grown princess 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 IGI LG619437868 or 619437868. Listed at 17 retailers as of October 30, 2026, with prices from £196 to £1,246, a £1,051 spread on the same certified stone. Brilliant Earth lists it at £1,246. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG619437868
Dimensions6.49 × 6.43 × 4.67 mm
L/W Ratio1.01
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.49 mm6.43 mm1.73 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG619437868
Side View
Table 69.0%Crown 44.1°Girdle: MED-STKPavilion 38.3°Culet: NoneDepth 72.6%

Caratlytics Score

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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 30
Current: £1,246 GBP|Low: £166 GBP|High: £1,761 GBP|Avg: £548 GBP|-29.2%
Brilliant Earth
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
Retailer 16
Retailer 17
October 31, 2026
Retailer 4£196 GBP
Retailer 13£227 GBP
Retailer 5£243 GBP
Retailer 17£243 GBP
Retailer 16£272 GBP
Retailer 11£332 GBP
Retailer 10£367 GBP
Retailer 8£405 GBP
Retailer 2£461 GBP
Retailer 7£479 GBP
Retailer 6£502 GBP
Retailer 14£746 GBP
Retailer 3£780 GBP
Retailer 15£952 GBP
Retailer 12£974 GBP
Retailer 9£1,000 GBP
Brilliant Earth£1,246 GBP

38 data points across 17 retailers

17 retailers£196 GBP to £1,246 GBP

A
Cheapest Retailer
-
£196 GBP
$262 USD
A
Retailer 2
-
£227 GBP
$304 USD
View
A
Retailer 3
-
£243 GBP
$325 USD
View
A
Retailer 4
-
£243 GBP
$325 USD
View
Retailer 5
-
£272 GBP
View
Price last confirmed 14 days ago
A
Retailer 6
-
£332 GBP
$445 USD
View
A
Retailer 7
-
£367 GBP
€468 EUR
View
B+
Retailer 8
-
£405 GBP
$542 USD
View
B+
Retailer 9
-
£461 GBP
View
B+
Retailer 10
-
£479 GBP
$642 USD
View
B+
Retailer 11
-
£502 GBP
$672 USD
View
B
Retailer 12
-
£746 GBP
$999 USD
View
B
Retailer 13
-
£780 GBP
$1,045 USD
View
Retailer 14
-
£952 GBP
$1,275 USD
View
Price last confirmed 10 days ago
B
Retailer 15
-
£974 GBP
View
B
Retailer 16
-
£1,000 GBP
$1,340 USD
View
Most Expensive
B
Brilliant Earth
9118972A · Oct 30
£1,246 GBP
$1,670 USD
View
16 more retailers have this diamond
Prices start from £196 GBPSave up to £1,051 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 Princess
£196 GBP