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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 $4,365 NZD
As of November 5, 2026
Save $4,972 NZD (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $13,524 NZD 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: $13,524 NZD|Low: $4,191 NZD|High: $13,740 NZD|Avg: $7,602 NZD|-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$4,365 NZD
Retailer 9$4,750 NZD
Retailer 7$5,065 NZD
Retailer 4$5,354 NZD
Retailer 11$6,344 NZD
Retailer 10$6,961 NZD
Retailer 5$7,592 NZD
Retailer 8$7,893 NZD
Retailer 2$9,337 NZD
Retailer 3$11,333 NZD
MOH London$13,524 NZD

21 data points across 11 retailers

10 retailers$4,365 NZD to $9,337 NZD

B+
Cheapest Retailer
-
$4,365 NZD
B
Retailer 2
-
$4,750 NZD
View
Retailer 3
-
$5,065 NZD
View
Price last confirmed 25 days ago
B
Retailer 4
-
$5,065 NZD
View
B
Retailer 5
-
$5,354 NZD
View
B
Retailer 6
-
$6,961 NZD
View
B
Retailer 7
-
$7,592 NZD
View
B
Retailer 8
-
$7,893 NZD
View
B
Retailer 9
-
$9,337 NZD
View
Most Expensive
MOH London
LG451056916 · Nov 5
$13,524 NZD
£5,986 GBP
View
Price under review
9 more retailers have this diamond
Prices start from $4,365 NZDSave up to $4,972 NZD

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
$4,365 NZD