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Round|Lab Grown|IGI

1.91ct K SI1 Round Lab Grown Diamond

ID • K/SI1 • IGI LG485136604

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485136604

Diamond specifications and retailer prices

From $1,688 AUD
As of November 5, 2026
Save $4,585 AUD (73%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,273 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.91ct lab-grown round diamond

This 1.91ct 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 LG485136604 or 485136604. Listed at 10 retailers as of November 5, 2026, with prices from $1,688 to $6,273, a $4,585 spread on the same certified stone. MOH London lists it at $6,273. 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

1.91
Carat
K
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485136604
Dimensions8.00 × 7.94 × 4.89 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.00 mm7.94 mm1.91 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485136604
Side View
Table 55.0%Crown 34.2°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 61.4%

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: $6,273 AUD|Low: $1,620 AUD|High: $6,375 AUD|Avg: $3,049 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 4$1,688 AUD
Retailer 5$1,958 AUD
Retailer 7$1,958 AUD
Retailer 2$2,143 AUD
Retailer 3$2,207 AUD
Retailer 9$2,800 AUD
Retailer 10$3,033 AUD
Retailer 6$3,107 AUD
Retailer 8$3,858 AUD
MOH London$6,273 AUD

38 data points across 10 retailers

10 retailers$1,688 AUD to $6,273 AUD

A
Cheapest Retailer
-
$1,688 AUD
A
Retailer 2
-
$1,836 AUD
View
A
Retailer 3
-
$1,958 AUD
View
Retailer 4
-
$1,958 AUD
View
Price last confirmed 25 days ago
A
Retailer 5
-
$2,143 AUD
View
B+
Retailer 6
-
$2,207 AUD
View
B+
Retailer 7
-
$3,107 AUD
View
B
Retailer 8
-
$3,670 AUD
View
B
Retailer 9
-
$3,858 AUD
View
Most Expensive
B
MOH London
LG485136604 · Nov 5
$6,273 AUD
£3,458 GBP
View
9 more retailers have this diamond
Prices start from $1,688 AUDSave up to $4,585 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.

A
1.91ct Round
$1,688 AUD