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Round|Lab Grown|IGI

1.71ct K VS1 Round Lab Grown Diamond

EX • K/VS1 • IGI LG451056916

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451056916

Diamond specifications and retailer prices

From $3,506 AUD
As of November 5, 2026
Save $3,993 AUD (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $10,860 AUD at MOH London · As of November 5, 2026
View at MOH London

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 K colour (faint-tinted) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG451056916 or 451056916. Listed at 10 retailers as of November 3, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.71
Carat
K
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056916
Dimensions7.59 × 7.64 × 4.77 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.59 mm7.64 mm1.71 ctK / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056916
Side View
Table 54.5%Crown 35.5°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $10,860 AUD|Low: $3,366 AUD|High: $11,034 AUD|Avg: $6,105 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 6$3,506 AUD
Retailer 9$3,814 AUD
Retailer 7$4,067 AUD
Retailer 4$4,300 AUD
Retailer 11$5,094 AUD
Retailer 10$5,590 AUD
Retailer 5$6,097 AUD
Retailer 8$6,338 AUD
Retailer 2$7,498 AUD
Retailer 3$9,101 AUD
MOH London$10,860 AUD

21 data points across 11 retailers

10 retailers$3,506 AUD to $7,498 AUD

B+
Cheapest Retailer
-
$3,506 AUD
B
Retailer 2
-
$3,814 AUD
View
Retailer 3
-
$4,067 AUD
View
Price last confirmed 25 days ago
B
Retailer 4
-
$4,067 AUD
View
B
Retailer 5
-
$4,300 AUD
View
B
Retailer 6
-
$5,590 AUD
View
B
Retailer 7
-
$6,097 AUD
View
B
Retailer 8
-
$6,338 AUD
View
B
Retailer 9
-
$7,498 AUD
View
Most Expensive
MOH London
LG451056916 · Nov 5
$10,860 AUD
£5,986 GBP
View
Price under review
9 more retailers have this diamond
Prices start from $3,506 AUDSave up to $3,993 AUD

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.

B+
1.71ct Round
$3,506 AUD