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Round|Lab Grown|IGI

1.71ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG573377307

Shape and cutting style on the report: Round brilliant

Certificate IGI LG573377307

Diamond specifications and retailer prices

From £151 GBP
$203 USD
As of October 29, 2026
Save £1,302 GBP (90%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,453 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.71ct lab-grown round diamond

This 1.71ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG573377307 or 573377307. Listed at 10 retailers as of October 29, 2026, with prices from £151 to £1,453, a £1,302 spread on the same certified stone. Do Amore Diamonds lists it at £1,453. 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

1.71
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG573377307
Dimensions7.64 × 7.60 × 4.75 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.64 mm7.60 mm1.71 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG573377307
Side View
Table 56.5%Crown 35.7°Girdle: MediumPavilion 40.9°Culet: NoneDepth 62.4%

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 29
Current: £1,453 GBP|Low: £147 GBP|High: £1,483 GBP|Avg: £542 GBP|-2.0%
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
October 29, 2026
Retailer 13£151 GBP
Retailer 14£171 GBP
Retailer 12£176 GBP
Retailer 11£324 GBP
Retailer 2£383 GBP
Retailer 4£403 GBP
Retailer 5£449 GBP
Retailer 3£478 GBP
Retailer 8£604 GBP
Retailer 9£606 GBP
Retailer 10£666 GBP
Retailer 7£831 GBP
Retailer 6£835 GBP
Do Amore Diamonds£1,453 GBP

38 data points across 14 retailers

10 retailers£151 GBP to £1,453 GBP

A
Cheapest Retailer
-
£151 GBP
$203 USD
A
Retailer 2
-
£171 GBP
$230 USD
View
Final sale: no returns
A
Retailer 3
-
£176 GBP
$236 USD
View
B+
Retailer 4
-
£324 GBP
$435 USD
View
A
Retailer 5
-
£383 GBP
View
Retailer 6
-
£604 GBP
$810 USD
View
Price last confirmed 12 days ago
Retailer 7
-
£606 GBP
$813 USD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
£666 GBP
$894 USD
View
B
Retailer 9
-
£831 GBP
View
Most Expensive
B
Do Amore Diamonds
27-706090C23 · Oct 29
£1,453 GBP
$1,950 USD
View
9 more retailers have this diamond
Prices start from £151 GBPSave up to £1,302 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
1.71ct Round
£151 GBP