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Round|Lab Grown|IGI

1.66ct K SI1 Round Lab Grown Diamond

EX • K/SI1 • IGI LG407948757

Shape and cutting style on the report: Round brilliant

Certificate IGI LG407948757

Diamond specifications and retailer prices

From $1,321 SGD
As of November 5, 2026
Save $3,874 SGD (75%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $5,195 SGD at MOH London · As of November 3, 2026
View at MOH London

About this 1.66ct lab-grown round diamond

This 1.66ct lab-grown round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG407948757 or 407948757. Listed at 9 retailers as of November 3, 2026, with prices from $1,321 to $5,195, a $3,874 spread on the same certified stone. MOH London lists it at $5,195. 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

1.66
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407948757
Dimensions7.67 × 7.72 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.67 mm7.72 mm1.66 ctK / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG407948757
Side View
Table 59.0%Crown 32.1°GirdlePavilion 40.3°Culet: NoneDepth 59.2%

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: Nov 5
Current: $5,195 SGD|Low: $1,321 SGD|High: $5,265 SGD|Avg: $2,908 SGD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 3, 2026
Retailer 3$1,321 SGD
Retailer 4$1,532 SGD
Retailer 2$1,756 SGD
Retailer 7$2,227 SGD
Retailer 5$2,443 SGD
Retailer 6$3,201 SGD
Retailer 8$4,384 SGD
MOH London$5,195 SGD

15 data points across 8 retailers

9 retailers$1,321 SGD to $5,195 SGD

A
Cheapest Retailer
-
$1,321 SGD
B+
Retailer 2
-
$1,437 SGD
View
Retailer 3
-
$1,532 SGD
View
Price last confirmed 25 days ago
B+
Retailer 4
-
$1,532 SGD
View
B+
Retailer 5
-
$1,756 SGD
View
B
Retailer 6
-
$2,443 SGD
View
B
Retailer 7
-
$2,872 SGD
View
B
Retailer 8
-
$3,201 SGD
View
Most Expensive
B
MOH London
LG407948757 · Nov 3
$5,195 SGD
£3,192 GBP
View
8 more retailers have this diamond
Prices start from $1,321 SGDSave up to $3,874 SGD

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
1.66ct Round
$1,321 SGD