Round|Lab Grown|GIA

1.73ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 3475370229

Certificate GIA 3475370229

Diamond specifications and retailer prices

From £290 GBP
$386 USD
As of October 29, 2026
Save £1,175 GBP (80%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,133 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

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 3475370229. Listed at 16 retailers as of October 29, 2026, with a 405% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle36°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 3475370229
Dimensions7.68 × 7.65 × 4.78 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
7.68 mm7.65 mm1.73 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3475370229
Side View
Table 57.0%Crown 36°Girdle: MED-MEDPavilion 40.8°Culet: NoneDepth 62.4%

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: £2,133 GBP|Low: £290 GBP|High: £2,673 GBP|Avg: £887 GBP|-20.2%
Do Amore Diamonds
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£290 GBP
Retailer 12£324 GBP
Retailer 7£337 GBP
Retailer 4£360 GBP
Retailer 11£360 GBP
Retailer 5£465 GBP
Retailer 10£469 GBP
Retailer 8£591 GBP
Retailer 2£595 GBP
Retailer 15£606 GBP
Retailer 6£762 GBP
Retailer 14£1,149 GBP
Retailer 3£1,275 GBP
Retailer 9£1,465 GBP
Do Amore Diamonds£2,133 GBP

44 data points across 15 retailers

16 retailers£290 GBP to £1,465 GBP

Retailer 1
-
£290 GBP
$386 USD
Price last confirmed 7 days ago
A
Retailer 2
-
£290 GBP
$386 USD
View
A
Retailer 3
-
£324 GBP
$432 USD
View
A
Retailer 4
-
£337 GBP
$449 USD
View
Final sale: no returns
A
Retailer 5
-
£360 GBP
$479 USD
View
A
Retailer 6
-
£360 GBP
$479 USD
View
B+
Retailer 7
-
£465 GBP
$619 USD
View
A
Retailer 8
-
£469 GBP
$625 USD
View
B+
Retailer 9
-
£591 GBP
€750 EUR
View
B+
Retailer 10
-
£595 GBP
View
B+
Retailer 11
-
£606 GBP
$807 USD
View
Retailer 12
-
£762 GBP
$1,015 USD
View
Price last confirmed 9 days ago
B
Retailer 13
-
£1,149 GBP
$1,530 USD
View
B
Retailer 14
-
£1,275 GBP
$1,698 USD
View
B
Retailer 15
-
£1,465 GBP
View
Most Expensive
Do Amore Diamonds
34-DB103-108 · Oct 30
£2,133 GBP
$2,840 USD
View
Price under review
15 more retailers have this diamond
Prices start from £290 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
£290 GBP