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Oval|Lab Grown|IGI

1.73ct K SI2 Oval Lab Grown Diamond

ID • K/SI2 • IGI LG451056887

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451056887

Diamond specifications and retailer prices

From $3,536 NZD
As of November 5, 2026
Save $8,148 NZD (70%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $11,684 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 1.73ct lab-grown oval diamond

This 1.73ct lab-grown oval sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451056887 or 451056887. Listed at 8 retailers as of November 5, 2026, with prices from $3,536 to $11,684, a $8,148 spread on the same certified stone. MOH London lists it at $11,684. 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
K
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451056887
Dimensions9.21 × 6.80 × 4.31 mm
L/W Ratio1.35
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
9.21 mm6.80 mm1.73 ctK / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451056887
Side View
Table 57.0%Crown 36.9°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 63.4%

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: $11,684 NZD|Low: $3,395 NZD|High: $11,872 NZD|Avg: $6,332 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3$3,536 NZD
Retailer 7$3,848 NZD
Retailer 4$4,102 NZD
Retailer 8$5,246 NZD
Retailer 6$5,637 NZD
Retailer 5$6,420 NZD
Retailer 2$6,736 NZD
Retailer 9$9,180 NZD
MOH London$11,684 NZD

14 data points across 9 retailers

8 retailers$3,536 NZD to $11,684 NZD

B+
Cheapest Retailer
-
$3,536 NZD
B+
Retailer 2
-
$3,848 NZD
View
Retailer 3
-
$4,102 NZD
View
Price last confirmed 26 days ago
B
Retailer 4
-
$4,102 NZD
View
B
Retailer 5
-
$5,637 NZD
View
B
Retailer 6
-
$6,420 NZD
View
B
Retailer 7
-
$6,736 NZD
View
Most Expensive
B
MOH London
LG451056887 · Nov 5
$11,684 NZD
£5,100 GBP
View
7 more retailers have this diamond
Prices start from $3,536 NZDSave up to $8,148 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+
1.73ct Oval
$3,536 NZD