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Oval|Lab Grown|IGI

1.87ct K SI2 Oval Lab Grown Diamond

ID • K/SI2 • IGI LG451058154

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451058154

Diamond specifications and retailer prices

From $2,117 USD
As of November 5, 2026
Save $4,526 USD (68%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,643 USD at MOH London · As of November 5, 2026
View at MOH London

About this 1.87ct lab-grown oval diamond

This 1.87ct 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 LG451058154 or 451058154. Listed at 8 retailers as of November 5, 2026, with prices from $2,117 to $6,643, a $4,526 spread on the same certified stone. MOH London lists it at $6,643. 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

1.87
Carat
K
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451058154
Dimensions9.50 × 6.98 × 4.35 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizePointed
Top View
9.50 mm6.98 mm1.87 ctK / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451058154
Side View
Table 61.0%Crown 35.7°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.3%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $6,643 USD|Low: $2,032 USD|High: $6,750 USD|Avg: $3,734 USD|-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$2,117 USD
Retailer 7$2,303 USD
Retailer 4$2,455 USD
Retailer 8$3,122 USD
Retailer 6$3,375 USD
Retailer 5$3,837 USD
Retailer 2$3,938 USD
Retailer 9$5,495 USD
MOH London$6,643 USD

16 data points across 9 retailers

8 retailers$2,117 USD to $6,643 USD

B+
Cheapest Retailer
-
$2,117 USD
B+
Retailer 2
-
$2,303 USD
View
Retailer 3
-
$2,455 USD
View
Price last confirmed 26 days ago
B
Retailer 4
-
$2,455 USD
View
B
Retailer 5
-
$3,375 USD
View
B
Retailer 6
-
$3,837 USD
View
B
Retailer 7
-
$3,938 USD
View
Most Expensive
B
MOH London
LG451058154 · Nov 5
$6,643 USD
£5,231 GBP
View
7 more retailers have this diamond
Prices start from $2,117 USDSave up to $4,526 USD

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+
1.87ct Oval
$2,117 USD